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Magnetic-Field-Induced Quantum Phase Transitions in bulk CrI<sub>3</sub>*

ORAL

Abstract

Using magnetic field and temperature dependent circularly polarized Raman spectroscopy of phonons and magnons (spin waves), we reveal a novel mixed state of layered AFM and FM in 3D CrI3 bulk crystals where the layered AFM survives in the surface layers and the FM appears in deeper bulk layers. We then show that the surface layered AFM transits into the FM at a critical magnetic field of 2 T, similar to what was found in the few layer case. Concurrent with this magnetic phase transition, we discover a first-order structural phase transition that alters the crystallographic point group from C3i (rhombohedral) to C2h (monoclinic). Our result reveals the intimate relationship between the layered AFM-to-FM and the crystalline rhombohedral-to-monoclinic phase transitions.

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Presenters

  • Gaihua Ye

    Texas Tech University

Authors

  • Gaihua Ye

    Texas Tech University

  • Zhipeng Ye

    Texas Tech University, Department of Electrical and Computer Engineering, Texas Tech University

  • Rui He

    Texas Tech University, Department of Electrical and Computer Engineering, Texas Tech University

  • Hyun Ho Kim

    University of Waterloo, Canada

  • Bowen Yang

    University of Waterloo, University of Waterloo, Canada

  • Adam W Tsen

    University of Waterloo, University of Waterloo, Canada

  • Siwen Li

    University of Michigan

  • Xiangpeng Luo

    University of Michigan

  • Kai Sun

    University of Michigan, University of Michigan - Ann Arbor, Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States

  • Liuyan Zhao

    University of Michigan, Physics, University of Michigan, University of Michigan - Ann Arbor, Physics Department, University of Michigan