Cesare Tresca, Gianni Profeta, Giovanni Marini, Giovanni B. Bachelet, Antonio Sanna, Matteo Calandra, and Lilia Boeri
Phys. Rev. B 106, L180501 (2022) - Published 3 November, 2022
In 1911, Kamerlingh Onnes discovered superconductivity, measuring the low-temperature resistivity in mercury. Nowadays, more than 100 years later, many new superconductors have been discovered with higher and higher critical temperatures. Ironically, the exact origin of the superconducting phase in mercury has remained hidden so far. The authors decided to revisit the description of this fascinating material with techniques, revealing all its intricate physical properties. Despite its apparent simplicity, mercury hides effects that are anything but trivial. Their proper description is a challenging problem and requires advanced computational and theoretical techniques, which have become available only recently.
Hiroki Ikegami and Yasunobu Nakamura
Phys. Rev. B 106, 184511 (2022) - Published 21 November, 2022
Understanding the properties of the insulating phase is key to uncovering the nature of the superconductor-insulator quantum phase transition. Here, the authors study two-dimensional Josephson junction arrays, a canonical model system of the superconductor-insulator transition, to clarify how the insulating phase develops. By systematic studies of nonlinear transport properties, they show that the formation of the insulating phase upon decreasing temperature is understood as the localization of Cooper pairs caused by the Berezinskii-Kosterlitz-Thouless mechanism under the influence of a finite-range screening of the interaction between Cooper pairs.
M. Kuzmanović, T. Dvir, D. LeBoeuf, S. Ilić, M. Haim, D. Möckli, S. Kramer, M. Khodas, M. Houzet, J. S. Meyer, M. Aprili, H. Steinberg, and C. H. L. Quay
Phys. Rev. B 106, 184514 (2022) - Published 28 November, 2022
Equal spin triplet pairs (ESTPs) of nuclei form the ground state of superfluid He. ESTPs of electrons have long been sought in superconducting systems. In layered transition metal dichalcogenides with 2 structure, such as NbSe, ESTP correlations have been predicted to arise from the interaction of the Ising spin-orbit field, which pins the internal spin axis of conventional singlet pairs out-of-plane, and an applied in-plane magnetic field. The tunneling spectroscopy study done here of bilayer NbSe shows experimental signatures of these ESTPs.
Xu Zhang, Kai Sun, Heqiu Li, Gaopei Pan, and Zi Yang Meng
Phys. Rev. B 106, 184517 (2022) - Published 29 November, 2022
Here, the authors find a phenomenological theory of superconductivity in moiré flat band systems. With decreasing temperature, charge excitations are gapped, while charge excitations exist within the gap, shaping a bosonic fluid. Finite band width breaks the symmetry in these two-dimensional systems, making the bosonic fluid coherent and condense.
K. S. C. Decker, D. M. Kennes, and C. Karrasch
Phys. Rev. B 106, L180201 (2022) - Published 22 November, 2022
Quantum systems are typically ergodic and can be described by a thermal ensemble. In this work, the authors use large-scale tensor network numerics to investigate if a generic two-dimensional disordered Heisenberg model of quantum spins exhibits a nonergodic phase. They provide evidence for the existence of a many-body localized regime at sufficiently strong disorder. They also estimate the critical disorder strength where a crossover into an ergodic regime occurs and address finite-size effects.
Feng Ye, Masaaki Matsuda, Zachary Morgan, Todd Sherline, Yifei Ni, Hengdi Zhao, and G. Cao
Phys. Rev. B 106, L180402 (2022) - Published 1 November, 2022
Characterizing the magnetic structure is crucial to understand the extraordinary colossal magnetoresistance of ferrimagnetic MnSiTe. This material exhibits orders of magnitude reduction in resistivity when a magnetic polarization is avoided. Using single-crystal neutron diffraction, the authors reveal here the field evolution of the spin configuration. Prominent magnetic diffuse scattering is present and decays slowly well above the transition. The spin correlation lengths agree well with the electrical resistivity, underscoring the role of magnetic fluctuations contributing to the magnetoresistivity near the transition.
Ji Zou, Shu Zhang, and Yaroslav Tserkovnyak
Phys. Rev. B 106, L180406 (2022) - Published 23 November, 2022
Magnet-mediated dissipative coupling between spin qubits can be exploited to imprint long-lived quantum entanglement. This work points to a new direction for the application of spintronic schemes in future quantum information technologies, with an eye on the dynamical phase transitions associated with non-Hermitian dynamics of the reduced density matrix.
Xiaojian Bai, Frank Lechermann, Yaohua Liu, Yongqiang Cheng, Alexander I. Kolesnikov, Feng Ye, Travis J. Williams, Songxue Chi, Tao Hong, Garrett E. Granroth, Andrew F. May, and Stuart Calder
Phys. Rev. B 106, L180409 (2022) - Published 30 November, 2022
FeGeTe is one of the most intensely studied quasi-two-dimensional layered materials of recent times. It can be exfoliated down to a monolayer and has promising applications in room-temperature magnetoelectronics. Here, the authors use neutron scattering and first-principle calculations to study its fundamental magnetic and electronic properties. A rare orbital selective Mott transition was identified that drives the emergence of antiferromagnetic fluctuations within the ferromagnetic order, opening a new avenue in understanding the coexistence of itinerant and local moments and the heavy-fermion physics in this 3 electron system.
Xinghai Zhang and Matthew S. Foster
Phys. Rev. B 106, L180503 (2022) - Published 3 November, 2022
The shape of electron wave functions determines key properties of quantum materials. Very recently, it was found that disorder can turn all wave functions into fractals (“spectrum-wide quantum criticality,” SWQC) in models of topological and strongly correlated superconductors. The implications of SWQC for superconductivity itself remain largely unexplored. Here, the authors show that superconductivity can be strongly enhanced near the SWQC Anderson transition in two one-dimensional models. The study highlights a new potential mechanism for achieving higher transition temperatures via random or structured inhomogeneity.
Jonathan T. Willman, Kien Nguyen-Cong, Ashley S. Williams, Anatoly B. Belonoshko, Stan G. Moore, Aidan P. Thompson, Mitchell A. Wood, and Ivan I. Oleynik
Phys. Rev. B 106, L180101 (2022) - Published 30 November, 2022
K. S. C. Decker, D. M. Kennes, and C. Karrasch
Phys. Rev. B 106, L180201 (2022) - Published 22 November, 2022
Quantum systems are typically ergodic and can be described by a thermal ensemble. In this work, the authors use large-scale tensor network numerics to investigate if a generic two-dimensional disordered Heisenberg model of quantum spins exhibits a nonergodic phase. They provide evidence for the existence of a many-body localized regime at sufficiently strong disorder. They also estimate the critical disorder strength where a crossover into an ergodic regime occurs and address finite-size effects.
Xin Shen, Yan-Qing Zhu, and Zhi Li
Phys. Rev. B 106, L180301 (2022) - Published 14 November, 2022
Haiyan Fan, He Gao, Shuowei An, Zhongming Gu, Yafeng Chen, Sibo Huang, Shanjun Liang, Jie Zhu, Tuo Liu, and Zhongqing Su
Phys. Rev. B 106, L180302 (2022) - Published 14 November, 2022
C.-Yu Wang, S. Sharma, E. K. U. Gross, and J. K. Dewhurst
Phys. Rev. B 106, L180303 (2022) - Published 16 November, 2022
I. V. Solovyev, A. V. Ushakov, and S. V. Streltsov
Phys. Rev. B 106, L180401 (2022) - Published 1 November, 2022
Feng Ye, Masaaki Matsuda, Zachary Morgan, Todd Sherline, Yifei Ni, Hengdi Zhao, and G. Cao
Phys. Rev. B 106, L180402 (2022) - Published 1 November, 2022
Characterizing the magnetic structure is crucial to understand the extraordinary colossal magnetoresistance of ferrimagnetic MnSiTe. This material exhibits orders of magnitude reduction in resistivity when a magnetic polarization is avoided. Using single-crystal neutron diffraction, the authors reveal here the field evolution of the spin configuration. Prominent magnetic diffuse scattering is present and decays slowly well above the transition. The spin correlation lengths agree well with the electrical resistivity, underscoring the role of magnetic fluctuations contributing to the magnetoresistivity near the transition.
Ivica Živković, Ravi Yadav, Jian-Rui Soh, ChangJiang Yi, YouGuo Shi, Oleg V. Yazyev, and Henrik M. Rønnow
Phys. Rev. B 106, L180403 (2022) - Published 21 November, 2022
Ding-Fu Shao, Shu-Hui Zhang, Rui-Chun Xiao, Zi-An Wang, W. J. Lu, Y. P. Sun, and Evgeny Y. Tsymbal
Phys. Rev. B 106, L180404 (2022) - Published 21 November, 2022
Hisashi Kotegawa, Toshiaki Uga, Hideki Tou, Eiichi Matsuoka, and Hitoshi Sugawara
Phys. Rev. B 106, L180405 (2022) - Published 23 November, 2022
Ji Zou, Shu Zhang, and Yaroslav Tserkovnyak
Phys. Rev. B 106, L180406 (2022) - Published 23 November, 2022
Magnet-mediated dissipative coupling between spin qubits can be exploited to imprint long-lived quantum entanglement. This work points to a new direction for the application of spintronic schemes in future quantum information technologies, with an eye on the dynamical phase transitions associated with non-Hermitian dynamics of the reduced density matrix.
E. Burzurí, M. J. Martínez-Pérez, M. Muntó, L. A. Barrios, N. Ventosa, O. Roubeau, J. Veciana, G. Aromí, and F. Luis
Phys. Rev. B 106, L180407 (2022) - Published 28 November, 2022
B. Lenz, B. Koteswararao, S. Biermann, P. Khuntia, M. Baenitz, and S. K. Panda
Phys. Rev. B 106, L180408 (2022) - Published 29 November, 2022
Xiaojian Bai, Frank Lechermann, Yaohua Liu, Yongqiang Cheng, Alexander I. Kolesnikov, Feng Ye, Travis J. Williams, Songxue Chi, Tao Hong, Garrett E. Granroth, Andrew F. May, and Stuart Calder
Phys. Rev. B 106, L180409 (2022) - Published 30 November, 2022
FeGeTe is one of the most intensely studied quasi-two-dimensional layered materials of recent times. It can be exfoliated down to a monolayer and has promising applications in room-temperature magnetoelectronics. Here, the authors use neutron scattering and first-principle calculations to study its fundamental magnetic and electronic properties. A rare orbital selective Mott transition was identified that drives the emergence of antiferromagnetic fluctuations within the ferromagnetic order, opening a new avenue in understanding the coexistence of itinerant and local moments and the heavy-fermion physics in this 3 electron system.
Cesare Tresca, Gianni Profeta, Giovanni Marini, Giovanni B. Bachelet, Antonio Sanna, Matteo Calandra, and Lilia Boeri
Phys. Rev. B 106, L180501 (2022) - Published 3 November, 2022
In 1911, Kamerlingh Onnes discovered superconductivity, measuring the low-temperature resistivity in mercury. Nowadays, more than 100 years later, many new superconductors have been discovered with higher and higher critical temperatures. Ironically, the exact origin of the superconducting phase in mercury has remained hidden so far. The authors decided to revisit the description of this fascinating material with techniques, revealing all its intricate physical properties. Despite its apparent simplicity, mercury hides effects that are anything but trivial. Their proper description is a challenging problem and requires advanced computational and theoretical techniques, which have become available only recently.
Yang-Zhi Chou, Fengcheng Wu, and Sankar Das Sarma
Phys. Rev. B 106, L180502 (2022) - Published 3 November, 2022
Xinghai Zhang and Matthew S. Foster
Phys. Rev. B 106, L180503 (2022) - Published 3 November, 2022
The shape of electron wave functions determines key properties of quantum materials. Very recently, it was found that disorder can turn all wave functions into fractals (“spectrum-wide quantum criticality,” SWQC) in models of topological and strongly correlated superconductors. The implications of SWQC for superconductivity itself remain largely unexplored. Here, the authors show that superconductivity can be strongly enhanced near the SWQC Anderson transition in two one-dimensional models. The study highlights a new potential mechanism for achieving higher transition temperatures via random or structured inhomogeneity.
Rui Song, Ping Zhang, Xian-Tu He, and Ning Hao
Phys. Rev. B 106, L180504 (2022) - Published 10 November, 2022
Ruslan Prozorov, Mehdi Zarea, and James A. Sauls
Phys. Rev. B 106, L180505 (2022) - Published 17 November, 2022
Changming Yue, Hideo Aoki, and Philipp Werner
Phys. Rev. B 106, L180506 (2022) - Published 21 November, 2022
Rousan Debbarma, Markus Aspegren, Florinda Viñas Boström, Sebastian Lehmann, Kimberly Dick, and Claes Thelander
Phys. Rev. B 106, L180507 (2022) - Published 28 November, 2022
Yuexin Zhang, Jie Tang, Xiaoyu Dai, Sheng Zhang, Zizheng Cao, and Yuanjiang Xiang
Phys. Rev. B 106, 184101 (2022) - Published 1 November, 2022
Jinglan Qiu, Huimin Wang, Jing Wang, Xiaojing Yao, Sheng Meng, and Ying Liu
Phys. Rev. B 106, 184102 (2022) - Published 2 November, 2022
Konstantinos Konstantinou, Felix C. Mocanu, and Jaakko Akola
Phys. Rev. B 106, 184103 (2022) - Published 4 November, 2022
Hisayoshi Komiyama, Tiantian Zhang, and Shuichi Murakami
Phys. Rev. B 106, 184104 (2022) - Published 10 November, 2022
Gang Bai, Yuhang Han, Wei Li, and Cunfa Gao
Phys. Rev. B 106, 184105 (2022) - Published 21 November, 2022
Kai Yang, Shaoyi Xu, Longwen Zhou, Zhiyuan Zhao, Tianyu Xie, Zhe Ding, Wenchao Ma, Jiangbin Gong, Fazhan Shi, and Jiangfeng Du
Phys. Rev. B 106, 184106 (2022) - Published 21 November, 2022
Siyuan Gao, Yifan Zhu, Zihao Su, Haohan Zeng, and Hui Zhang
Phys. Rev. B 106, 184107 (2022) - Published 22 November, 2022
I. R. Amiraslanov, Z. S. Aliev, P. A. Askerova, E. H. Alizade, Y. N. Aliyeva, N. A. Abdullayev, Z. A. Jahangirli, M. M. Otrokov, N. T. Mamedov, and E. V. Chulkov
Phys. Rev. B 106, 184108 (2022) - Published 23 November, 2022
Hafsa Syed, Adam Kinos, Chunyan Shi, Lars Rippe, and Stefan Kröll
Phys. Rev. B 106, 184109 (2022) - Published 28 November, 2022
I. Gamov, J. L. Lyons, G. Gärtner, K. Irmscher, E. Richter, M. Weyers, M. R. Wagner, and M. Bickermann
Phys. Rev. B 106, 184110 (2022) - Published 29 November, 2022
Yuan Gao, Xiaojing Huang, Ross Harder, Wonsuk Cha, Garth J. Williams, and Hanfei Yan
Phys. Rev. B 106, 184111 (2022) - Published 30 November, 2022
J. P. Santos Pires, S. M. João, Aires Ferreira, B. Amorim, and J. M. Viana Parente Lopes
Phys. Rev. B 106, 184201 (2022) - Published 3 November, 2022
Jiayan Zhang, Fei Wan, Xinru Wang, Ying Ding, Liehong Liao, Zhihui Chen, M. N. Chen, and Yuan Li
Phys. Rev. B 106, 184202 (2022) - Published 4 November, 2022
Kazi A. Alam and K. A. Muttalib
Phys. Rev. B 106, 184203 (2022) - Published 9 November, 2022
A. Rogachev, H. Ikuta, and U. Mizutani
Phys. Rev. B 106, 184204 (2022) - Published 10 November, 2022
Z. Ovadyahu
Phys. Rev. B 106, 184205 (2022) - Published 10 November, 2022
Saumitran Kasturirangan, Alex Kamenev, and Fiona J. Burnell
Phys. Rev. B 106, 184206 (2022) - Published 14 November, 2022
P. R. N. Falcão and M. L. Lyra
Phys. Rev. B 106, 184207 (2022) - Published 18 November, 2022
P. J. D. Crowley and A. Chandran
Phys. Rev. B 106, 184208 (2022) - Published 21 November, 2022
Antonio Štrkalj, Elmer V. H. Doggen, and Claudio Castelnovo
Phys. Rev. B 106, 184209 (2022) - Published 21 November, 2022
David Colas, Cédric Bellis, Bruno Lombard, and Régis Cottereau
Phys. Rev. B 106, 184210 (2022) - Published 21 November, 2022
Federico Elías and Alejandro B. Kolton
Phys. Rev. B 106, 184211 (2022) - Published 30 November, 2022
Han-Chuan Kou and Peng Li
Phys. Rev. B 106, 184301 (2022) - Published 14 November, 2022
Hung-Hsuan Teh, Wenjie Dou, and Joseph E. Subotnik
Phys. Rev. B 106, 184302 (2022) - Published 17 November, 2022
Biao Wang, Jiwen Zhao, Yanwei Hu, Yurong He, Nikolay Rodionov, Jiecai Han, and Jiaqi Zhu
Phys. Rev. B 106, 184303 (2022) - Published 18 November, 2022
Pierre-Gabriel Rozon, Michael J. Gullans, and Kartiek Agarwal
Phys. Rev. B 106, 184304 (2022) - Published 22 November, 2022
Takahiro Urata, Yusuke Takahashi, Kentaro Kuga, Tsunehiro Takeuchi, and Hiroshi Ikuta
Phys. Rev. B 106, 184401 (2022) - Published 1 November, 2022
Shashank Kumar Ranu and Daniel D. Stancil
Phys. Rev. B 106, 184402 (2022) - Published 2 November, 2022
B. P. Alho, P. O. Ribeiro, V. S. R. de Sousa, B. C. Margato, Anis Biswas, Tyler Del Rose, R. S. de Oliveira, E. P. Nóbrega, P. J. von Ranke, Y. Mudryk, and V. K. Pecharsky
Phys. Rev. B 106, 184403 (2022) - Published 4 November, 2022
S. A. Skorobogatov, K. A. Shaykhutdinov, D. A. Balaev, M. S. Pavlovskii, A. A. Krasikov, and K. Yu. Terentjev
Phys. Rev. B 106, 184404 (2022) - Published 4 November, 2022
L. Duan, X. C. Wang, J. Zhang, Z. Hu, J. F. Zhao, Y. G. Feng, H. L. Zhang, H.-J. Lin, C. T. Chen, W. Wu, Z. Li, R. Wang, J. F. Zhang, T. Xiang, and C. Q. Jin
Phys. Rev. B 106, 184405 (2022) - Published 4 November, 2022
Sutapa Dutta and Ashwin A. Tulapurkar
Phys. Rev. B 106, 184406 (2022) - Published 7 November, 2022
Tao Lin, Xueying Zhang, Nicolas Vernier, Xinran Wang, Enxuan Dong, Chao Chen, Jianteng Niu, Yiming Sun, Liu Yang, Wenhui Zheng, Dan Su, Na Lei, and Weisheng Zhao
Phys. Rev. B 106, 184407 (2022) - Published 7 November, 2022
Kunihiro Yananose, Paolo G. Radaelli, Mario Cuoco, Jaejun Yu, and Alessandro Stroppa
Phys. Rev. B 106, 184408 (2022) - Published 9 November, 2022
J. J. Cao, Z. W. Ouyang, X. C. Liu, T. T. Xiao, Y. R. Song, J. F. Wang, Y. Ishii, X. G. Zhou, and Y. H. Matsuda
Phys. Rev. B 106, 184409 (2022) - Published 9 November, 2022
Benjamin Meunier, Suvidyakumar Homkar, Fadi Choueikani, Mathieu G. Silly, Christophe Lefèvre, François Roulland, Cédric Leuvrey, Jérôme Robert, Daniele Preziosi, and Nathalie Viart
Phys. Rev. B 106, 184410 (2022) - Published 10 November, 2022
Nimisha Arora and Pintu Das
Phys. Rev. B 106, 184411 (2022) - Published 14 November, 2022
D. J. P. de Sousa, M. J. Sammon, Raseong Kim, Hai Li, Ian A. Young, and Tony Low
Phys. Rev. B 106, 184412 (2022) - Published 14 November, 2022
Girma Hailu Gebresenbut, Takayuki Shiino, Mikael Svante Andersson, Navid Qureshi, Oscar Fabelo, Premysl Beran, Daniel Qvarngård, Patrik Henelius, Andreas Rydh, Roland Mathieu, Per Nordblad, and Cesar Pay Gomez
Phys. Rev. B 106, 184413 (2022) - Published 15 November, 2022
Jungho Mun, Hongyoon Kim, Seong-Won Moon, and Junsuk Rho
Phys. Rev. B 106, 184414 (2022) - Published 16 November, 2022
A. V. Syromyatnikov
Phys. Rev. B 106, 184415 (2022) - Published 17 November, 2022
Marwan Deb, Elena Popova, Henri-Yves Jaffrès, Niels Keller, and Matias Bargheer
Phys. Rev. B 106, 184416 (2022) - Published 17 November, 2022
Zhen Zhao, Claudio Verdozzi, and Ferdi Aryasetiawan
Phys. Rev. B 106, 184417 (2022) - Published 21 November, 2022
Churen Gui, Jun Chen, and Shuai Dong
Phys. Rev. B 106, 184418 (2022) - Published 21 November, 2022
Xue Zhang, Baofang Cai, Jie Ren, Zhengping Yuan, Zhengde Xu, Yumeng Yang, Gengchiau Liang, and Zhifeng Zhu
Phys. Rev. B 106, 184419 (2022) - Published 21 November, 2022
Jing Li, Andrew H. Comstock, Dali Sun, and Xiaoshan Xu
Phys. Rev. B 106, 184420 (2022) - Published 22 November, 2022
R. Jansen, A. Spiesser, and S. Yuasa
Phys. Rev. B 106, 184421 (2022) - Published 23 November, 2022
Yi-Fan Zhang, Xiao-Sheng Ni, Trinanjan Datta, Meng Wang, Dao-Xin Yao, and Kun Cao
Phys. Rev. B 106, 184422 (2022) - Published 23 November, 2022
Santanu Pakhira, Yongbin Lee, Liqin Ke, and D. C. Johnston
Phys. Rev. B 106, 184423 (2022) - Published 28 November, 2022
Sk Jamaluddin, Roumita Roy, Amitabh Das, Sudipta Kanungo, and Ajaya K. Nayak
Phys. Rev. B 106, 184424 (2022) - Published 29 November, 2022
Evgeny A. Mashkovich, Kirill A. Grishunin, Anatoly K. Zvezdin, Thomas G. H. Blank, Alexander G. Zavyalov, Paul H. M. van Loosdrecht, Alexandra M. Kalashnikova, and Alexey V. Kimel
Phys. Rev. B 106, 184425 (2022) - Published 30 November, 2022
Debsuvra Mukhopadhyay, Jayakrishnan M. P. Nair, and G. S. Agarwal
Phys. Rev. B 106, 184426 (2022) - Published 30 November, 2022
Haoran Chen and Junren Shi
Phys. Rev. B 106, 184501 (2022) - Published 1 November, 2022
Xu Chen, Junjie Wang, Tianping Ying, Dajian Huang, Huiyang Gou, Qinghua Zhang, Yanchun Li, Hideo Hosono, Jian-gang Guo, and Xiaolong Chen
Phys. Rev. B 106, 184502 (2022) - Published 2 November, 2022
Taichi Terashima, Hishiro T. Hirose, Yoshitaka Matsushita, Shinya Uji, Hiroaki Ikeda, Yuki Fuseya, Teng Wang, and Gang Mu
Phys. Rev. B 106, 184503 (2022) - Published 4 November, 2022
Katsuhiko Higuchi and Masahiko Higuchi
Phys. Rev. B 106, 184504 (2022) - Published 10 November, 2022
Y. B. Shi, K. L. Zhang, and Z. Song
Phys. Rev. B 106, 184505 (2022) - Published 14 November, 2022
Yogeshwar Prasad
Phys. Rev. B 106, 184506 (2022) - Published 15 November, 2022
Taisei Kitamura, Akito Daido, and Youichi Yanase
Phys. Rev. B 106, 184507 (2022) - Published 16 November, 2022
M. Zegrodnik and P. Wójcik
Phys. Rev. B 106, 184508 (2022) - Published 16 November, 2022
Kazushige Machida
Phys. Rev. B 106, 184509 (2022) - Published 18 November, 2022
H. U. Özdemir, Vivek Mishra, N. R. Lee-Hone, Xiangru Kong, T. Berlijn, D. M. Broun, and P. J. Hirschfeld
Phys. Rev. B 106, 184510 (2022) - Published 18 November, 2022
Hiroki Ikegami and Yasunobu Nakamura
Phys. Rev. B 106, 184511 (2022) - Published 21 November, 2022
Understanding the properties of the insulating phase is key to uncovering the nature of the superconductor-insulator quantum phase transition. Here, the authors study two-dimensional Josephson junction arrays, a canonical model system of the superconductor-insulator transition, to clarify how the insulating phase develops. By systematic studies of nonlinear transport properties, they show that the formation of the insulating phase upon decreasing temperature is understood as the localization of Cooper pairs caused by the Berezinskii-Kosterlitz-Thouless mechanism under the influence of a finite-range screening of the interaction between Cooper pairs.
P. Sobota, R. Topolnicki, T. Ossowski, T. Pikula, A. Pikul, and R. Idczak
Phys. Rev. B 106, 184512 (2022) - Published 23 November, 2022
Yi-Xin Dai, Yue Mao, and Qing-Feng Sun
Phys. Rev. B 106, 184513 (2022) - Published 28 November, 2022
M. Kuzmanović, T. Dvir, D. LeBoeuf, S. Ilić, M. Haim, D. Möckli, S. Kramer, M. Khodas, M. Houzet, J. S. Meyer, M. Aprili, H. Steinberg, and C. H. L. Quay
Phys. Rev. B 106, 184514 (2022) - Published 28 November, 2022
Equal spin triplet pairs (ESTPs) of nuclei form the ground state of superfluid He. ESTPs of electrons have long been sought in superconducting systems. In layered transition metal dichalcogenides with 2 structure, such as NbSe, ESTP correlations have been predicted to arise from the interaction of the Ising spin-orbit field, which pins the internal spin axis of conventional singlet pairs out-of-plane, and an applied in-plane magnetic field. The tunneling spectroscopy study done here of bilayer NbSe shows experimental signatures of these ESTPs.
Jung Hoon Han and Patrick A. Lee
Phys. Rev. B 106, 184515 (2022) - Published 28 November, 2022
Mark E. Barber, Hun-ho Kim, Toshinao Loew, Matthieu Le Tacon, Matteo Minola, Marcin Konczykowski, Bernhard Keimer, Andrew P. Mackenzie, and Clifford W. Hicks
Phys. Rev. B 106, 184516 (2022) - Published 29 November, 2022
Xu Zhang, Kai Sun, Heqiu Li, Gaopei Pan, and Zi Yang Meng
Phys. Rev. B 106, 184517 (2022) - Published 29 November, 2022
Here, the authors find a phenomenological theory of superconductivity in moiré flat band systems. With decreasing temperature, charge excitations are gapped, while charge excitations exist within the gap, shaping a bosonic fluid. Finite band width breaks the symmetry in these two-dimensional systems, making the bosonic fluid coherent and condense.
