Threedimensional nature of the band structure of ${\mathrm{ZrTe}}_{5}$ measured by highmomentumresolution photoemission spectroscopy [3D nature ${\mathrm{ZrTe}}_{5}$ band structure measured by highmomentumresolution photoemission spectroscopy]
Abstract
Here, we have performed a systematic highmomentumresolution photoemission study on ZrTe _{5} using 6eV photon energy. We have measured the band structure near the Γ point, and quantified the gap between the conduction and valence band as 18 ≤ Δ ≤ 29 meV. We have also observed photonenergydependent behavior attributed to finalstate effects and the threedimensional (3D) nature of the material's band structure. Our interpretation indicates the gap is intrinsic and reconciles discrepancies on the existence of a topological surface state reported by different studies. The existence of a gap suggests that ZrTe _{5} is not a 3D strong topological insulator nor a 3D Dirac semimetal. Therefore, our experiment is consistent with ZrTe _{5} being a 3D weak topological insulator.
 Authors:

 Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Nanjing Univ., Jiangsu (China)
 Publication Date:
 Research Org.:
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1368695
 Alternate Identifier(s):
 OSTI ID: 1356444
 Grant/Contract Number:
 AC0276SF00515; GBMF4546; 51472112; BK20140019
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physical Review B
 Additional Journal Information:
 Journal Volume: 95; Journal Issue: 19; Journal ID: ISSN 24699950
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Xiong, H., Sobota, J. A., Yang, S. L., Soifer, H., Gauthier, A., Lu, M. H., Lv, Y. Y., Yao, S. H., Lu, D., Hashimoto, M., Kirchmann, P. S., Chen, Y. F., and Shen, Z. X. Threedimensional nature of the band structure of ZrTe5 measured by highmomentumresolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by highmomentumresolution photoemission spectroscopy]. United States: N. p., 2017.
Web. doi:10.1103/PhysRevB.95.195119.
Xiong, H., Sobota, J. A., Yang, S. L., Soifer, H., Gauthier, A., Lu, M. H., Lv, Y. Y., Yao, S. H., Lu, D., Hashimoto, M., Kirchmann, P. S., Chen, Y. F., & Shen, Z. X. Threedimensional nature of the band structure of ZrTe5 measured by highmomentumresolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by highmomentumresolution photoemission spectroscopy]. United States. doi:10.1103/PhysRevB.95.195119.
Xiong, H., Sobota, J. A., Yang, S. L., Soifer, H., Gauthier, A., Lu, M. H., Lv, Y. Y., Yao, S. H., Lu, D., Hashimoto, M., Kirchmann, P. S., Chen, Y. F., and Shen, Z. X. Wed .
"Threedimensional nature of the band structure of ZrTe5 measured by highmomentumresolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by highmomentumresolution photoemission spectroscopy]". United States. doi:10.1103/PhysRevB.95.195119. https://www.osti.gov/servlets/purl/1368695.
@article{osti_1368695,
title = {Threedimensional nature of the band structure of ZrTe5 measured by highmomentumresolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by highmomentumresolution photoemission spectroscopy]},
author = {Xiong, H. and Sobota, J. A. and Yang, S. L. and Soifer, H. and Gauthier, A. and Lu, M. H. and Lv, Y. Y. and Yao, S. H. and Lu, D. and Hashimoto, M. and Kirchmann, P. S. and Chen, Y. F. and Shen, Z. X.},
abstractNote = {Here, we have performed a systematic highmomentumresolution photoemission study on ZrTe5 using 6eV photon energy. We have measured the band structure near the Γ point, and quantified the gap between the conduction and valence band as 18 ≤ Δ ≤ 29 meV. We have also observed photonenergydependent behavior attributed to finalstate effects and the threedimensional (3D) nature of the material's band structure. Our interpretation indicates the gap is intrinsic and reconciles discrepancies on the existence of a topological surface state reported by different studies. The existence of a gap suggests that ZrTe5 is not a 3D strong topological insulator nor a 3D Dirac semimetal. Therefore, our experiment is consistent with ZrTe5 being a 3D weak topological insulator.},
doi = {10.1103/PhysRevB.95.195119},
journal = {Physical Review B},
number = 19,
volume = 95,
place = {United States},
year = {2017},
month = {5}
}
Web of Science
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