Heavy surface state in a possible topological Kondo insulator: Magnetothermoelectric transport on the (011) plane of
Motivated by the high sensitivity to Fermi surface topology and scattering mechanisms in magnetothermoelectric transport, we have measured the thermopower and Nernst effect on the (011) plane of the proposed topological Kondo insulator SmB6. These experiments, together with electrical resistivity and Hall effect measurements, suggest that the (011) plane also harbors a metallic surface with an effective mass on the order of 10–102 m0. The surface and bulk conductances are well distinguished in these measurements and are categorized into metallic and nondegenerate semiconducting regimes, respectively. As a result, electronic correlations play an important role in enhancing scattering and also contribute to the heavy surface state.
- Authors:
-
[1]
; [2]
; [3]
; [4]
; [1]
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Peking Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Hangzhou Normal Univ., Hangzhou (China)
- Zhejiang Univ., Hangzhou (China).
- Publication Date:
- Report Number(s):
- LA-UR-14-27821
Journal ID: ISSN 1098-0121; PRBMDO
- Grant/Contract Number:
- 11474082; 11190023; AC52-06NA25396
- Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 7; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Research Org:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
- OSTI Identifier:
- 1227699
- Alternate Identifier(s):
- OSTI ID: 1179894
- Free Publicly Accessible Full Text
-
Accepted Manuscript (DOE)
- Publisher's Version of Record
- https://doi.org/10.1103/PhysRevB.91.075130