Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5
Abstract
A three-dimensional (3D) Dirac semimetal (DS) is an analogue of graphene, but with linear energy dispersion in all (three) momentum directions. 3D DSs have been a fertile playground in discovering novel quantum particles, for example Weyl fermions, in solid state systems. Many 3D DSs were theoretically predicted and experimentally confirmed. Here, we report here the results in exfoliated ZrTe5 thin flakes from the studies of aberration-corrected scanning transmission electron microscopy and low temperature magneto-transport measurements. We observed several unique results. First, a π Berry phase was obtained from the Landau fan diagram of the Shubnikov-de Haas oscillations in the longitudinal conductivity σxx. Second, the longitudinal resistivity ρxx shows a linear magnetic field dependence in the quantum limit regime. Most surprisingly, quantum oscillations were also observed at fractional Landau level indices N = 5/3 and 7/5, demonstrating strong electron-electron interaction effects in ZrTe5.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States). School of Physics
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1332915
- Report Number(s):
- SAND2016-10784J
Journal ID: ISSN 2045-2322; srep35357; TRN: US1601868
- Grant/Contract Number:
- AC04-94AL85000; DMR-1350002; FG02-07ER46451
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 6; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Yu, W., Jiang, Y., Yang, J., Dun, Z. L., Zhou, H. D., Jiang, Z., Lu, P., and Pan, W. Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5. United States: N. p., 2016.
Web. doi:10.1038/srep35357.
Yu, W., Jiang, Y., Yang, J., Dun, Z. L., Zhou, H. D., Jiang, Z., Lu, P., & Pan, W. Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5. United States. https://doi.org/10.1038/srep35357
Yu, W., Jiang, Y., Yang, J., Dun, Z. L., Zhou, H. D., Jiang, Z., Lu, P., and Pan, W. Fri .
"Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5". United States. https://doi.org/10.1038/srep35357. https://www.osti.gov/servlets/purl/1332915.
@article{osti_1332915,
title = {Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5},
author = {Yu, W. and Jiang, Y. and Yang, J. and Dun, Z. L. and Zhou, H. D. and Jiang, Z. and Lu, P. and Pan, W.},
abstractNote = {A three-dimensional (3D) Dirac semimetal (DS) is an analogue of graphene, but with linear energy dispersion in all (three) momentum directions. 3D DSs have been a fertile playground in discovering novel quantum particles, for example Weyl fermions, in solid state systems. Many 3D DSs were theoretically predicted and experimentally confirmed. Here, we report here the results in exfoliated ZrTe5 thin flakes from the studies of aberration-corrected scanning transmission electron microscopy and low temperature magneto-transport measurements. We observed several unique results. First, a π Berry phase was obtained from the Landau fan diagram of the Shubnikov-de Haas oscillations in the longitudinal conductivity σxx. Second, the longitudinal resistivity ρxx shows a linear magnetic field dependence in the quantum limit regime. Most surprisingly, quantum oscillations were also observed at fractional Landau level indices N = 5/3 and 7/5, demonstrating strong electron-electron interaction effects in ZrTe5.},
doi = {10.1038/srep35357},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Fri Oct 14 00:00:00 EDT 2016},
month = {Fri Oct 14 00:00:00 EDT 2016}
}
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