Spin excitation in LiFeAs

ORAL

Abstract

We used inelastic neutron scattering to study the spin excitations in LiFeAs. Clear spin excitations were found but there was no spin resonance. Surprisingly, very big spin gap exists in this material.

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Authors

  • Meng Wang

    Institute of Physics Chinese Academy of Sciences

  • Huiqian Luo

    Institute of Physics Chinese Academy of Sciences

  • Xiancheng Wang

    Institute of Physics Chinese Academy of Sciences

  • Yang Zhao

    NIST Center for Neutron Reseach, NIST Center for Neutron Research

  • Jeffrey Lynn

    NIST Center for Neutron Research, Gaithersburg, MD, National Institute of Standards and Technology, NIST Center for Neutron Research

  • Changqing Jin

    Institute of Physics Chinese Academy of Sciences

  • Pengcheng Dai

    University of Tennessee, Knoxville, University of Tennessee and ORNL, University of Tennessee, Physics Dept, University of Tennessee