Electronic structure of the quantum spin Hall parent compound CdTe and related topological issues

Jie Ren, Guang Bian, Li Fu, Chang Liu, Tao Wang, Gangqiang Zha, Wanqi Jie, Madhab Neupane, T. Miller, M. Z. Hasan, and T.-C. Chiang
Phys. Rev. B 90, 205211 – Published 17 November 2014
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  • INTRODUCTION
  • METHODS
  • RESULTS AND DISCUSSION
  • CONCLUDING REMARKS
  • ACKNOWLEDGMENTS
    • References

    Abstract

    Cadmium telluride (CdTe), a compound widely used in devices, is a key base material for the experimental realization of the quantum spin Hall phase. We report herein a study of the electronic structure of CdTe by angle-resolved photoemission spectroscopy from well-ordered (110) surfaces. The results are compared with first-principles calculations to illustrate the topological distinction between CdTe and a closely related compound HgTe. Through a theoretical simulation a topological phase transition as well as the Dirac-Kane semimetal phase at the critical point was demonstrated in the mixed compound HgxCd1−xTe.

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    • Received 25 July 2014

    DOI:https://doi.org/10.1103/PhysRevB.90.205211

    ©2014 American Physical Society

    Authors & Affiliations

    Jie Ren1,2,3, Guang Bian4, Li Fu1,*, Chang Liu4, Tao Wang1, Gangqiang Zha1, Wanqi Jie1, Madhab Neupane4, T. Miller2,3, M. Z. Hasan4, and T.-C. Chiang2,3,5,†

    • 1State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
    • 2Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA
    • 3Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 South Goodwin Avenue, Urbana, Illinois 61801-2902, USA
    • 4Joseph Henry Laboratory and Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
    • 5Synchrotron Radiation Center, University of Wisconsin-Madison, 3731 Schneider Drive, Stoughton, Wisconsin 53589, USA

    • *Corresponding author: fuli@nwpu.edu.cn
    • †Corresponding author: tcchiang@illinois.edu

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    Issue

    Vol. 90, Iss. 20 — 15 November 2014

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