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Persistence of magnetic order in a highly excited Cu2+ state in CuO

U. Staub1, R. A. de Souza1, P. Beaud1,2, E. Möhr-Vorobeva1, G. Ingold2, A. Caviezel1, V. Scagnoli1, B. Delley3, W. F. Schlotter4 et al.

J. J. Turner4, O. Krupin4,5, W.-S. Lee6, Y.-D. Chuang7, L. Patthey2, R. G. Moore6, D. Lu8, M. Yi6, P. S. Kirchmann6, M. Trigo9, P. Denes7, D. Doering7, Z. Hussain7, Z. X. Shen6, D. Prabhakaran10, A. T. Boothroyd10, and S. L. Johnson1,11

  • 1Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • 2SwissFEL, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • 3Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • 4The Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 5European XFEL GmbH, Albert Einstein Ring 19, 22607 Hamburg, Germany
  • 6SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 7Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 8SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 9PULSE, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 10Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
  • 11ETH Zurich, Institute for Quantum Electronics, Wolfgang-Pauli-Strasse 16, 8093 Zurich, Switzerland

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Phys. Rev. B 89, 220401(R) – Published 2 June, 2014

DOI: https://doi.org/10.1103/PhysRevB.89.220401

Abstract

We use ultrafast resonant x-ray diffraction to study the magnetic order in CuO under conditions of high electronic excitation. By measuring changes in the spectral shape of the Cu2+ magnetic (1/2 0 −1/2) reflection we investigate how an intense optical pump pulse perturbs the electronic and magnetic states. We observe an energy shift in the magnetic resonance at short times after the pump pulse. This shift is compared with expectations from band structure calculations at different electronic temperatures. This spectral line shift indicates that although the electrons are heated to effective electron temperatures far above TN on a time scale faster than the experimental resolution, magnetic order persists in this highly excited state for several hundred femtoseconds.

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Corrections

25 June, 2014

Erratum

Publisher's Note: Persistence of magnetic order in a highly excited Cu2+ state in CuO [Phys. Rev. B 89, 220401(R) (2014)]

U. Staub et al.
Phys. Rev. B 90, 019903 (2014)

Article Text

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Outline

Information

Phys. Rev. B 89, 220401(R)– Published 2 June, 2014
  • Received 17 September 2013
  • Revised 24 March 2014
  • Corrected 25 June 2014

©2014 American Physical Society

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