Anharmonic free energy of lattice vibrations in fcc crystals from a mean-field bond
Thomas D. Swinburne, Jan Janssen, Mira Todorova, Gideon Simpson, Petr Plechac, Mitchell Luskin, and Jörg Neugebauer
Phys. Rev. B 102, 100101(R) (2020) - Published 3 September, 2020
Topolectrical-circuit realization of a four-dimensional hexadecapole insulator
Weixuan Zhang, Deyuan Zou, Jiacheng Bao, Wenjing He, Qingsong Pei, Houjun Sun, and Xiangdong Zhang
Phys. Rev. B 102, 100102(R) (2020) - Published 11 September, 2020
It is very attractive to explore topological physics beyond three-dimensional space. This work experimentally demonstrates the realization of a classical analog of higher order/dimensional topological phases in electric circuits. Multiple robust corner states have been observed. These result from the nontrivial hexadecapole moment and may have potential applications in the field of topological analog signal processing with multiple channels. The authors expect that experimental access to higher order/dimensional topological physics with electric circuits can provide a valuable reference for investigating the higher-dimensional topological phase in full real space.
Formation of nanoscale polarized clusters as precursors of electronic ferroelectricity probed by conductance noise spectroscopy
Jens Müller, Satoshi Iguchi, Hiromi Taniguchi, and Takahiko Sasaki
Phys. Rev. B 102, 100103(R) (2020) - Published 29 September, 2020



