Three-dimensional nature of the band structure of measured by high-momentum-resolution photoemission spectroscopy [3D nature band structure measured by high-momentum-resolution photoemission spectroscopy]
Abstract
Here, we have performed a systematic high-momentum-resolution photoemission study on ZrTe5 using 6-eV 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 photon-energy-dependent behavior attributed to final-state effects and the three-dimensional (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.
- 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:
- AC02-76SF00515; GBMF4546; 51472112; BK20140019
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 19; Journal ID: ISSN 2469-9950
- 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. Three-dimensional nature of the band structure of ZrTe5 measured by high-momentum-resolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by high-momentum-resolution 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. Three-dimensional nature of the band structure of ZrTe5 measured by high-momentum-resolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by high-momentum-resolution photoemission spectroscopy]. United States. https://doi.org/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 .
"Three-dimensional nature of the band structure of ZrTe5 measured by high-momentum-resolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by high-momentum-resolution photoemission spectroscopy]". United States. https://doi.org/10.1103/PhysRevB.95.195119. https://www.osti.gov/servlets/purl/1368695.
@article{osti_1368695,
title = {Three-dimensional nature of the band structure of ZrTe5 measured by high-momentum-resolution photoemission spectroscopy [3D nature ZrTe5 band structure measured by high-momentum-resolution 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 high-momentum-resolution photoemission study on ZrTe5 using 6-eV 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 photon-energy-dependent behavior attributed to final-state effects and the three-dimensional (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 = {Wed May 10 00:00:00 EDT 2017},
month = {Wed May 10 00:00:00 EDT 2017}
}
Web of Science
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