Surface state reconstruction in ion-damaged SmB6

Wakeham, N.; Wang, Y. Q.; Fisk, Z.; Ronning, F.; Thompson, J. D.

doi:10.1103/PhysRevB.91.085107

Title: Surface state reconstruction in ion-damaged ${SmB}_{6}$

Journal Article · Thu Feb 12 00:00:00 EST 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.085107· OSTI ID:1193286

Wakeham, N. ^[1]; Wang, Y. Q. ^[1]; Fisk, Z. ^[2]; Ronning, F. ^[1]; Thompson, J. D. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, Irvine, CA (United States)

We have used ion-irradiation to damage the (001) surfaces of SmB₆ single crystals to varying depths, and have measured the resistivity as a function of temperature for each depth of damage. We observe a reduction in the residual resistivity with increasing depth of damage. Our data are consistent with a model in which the surface state is not destroyed by the ion-irradiation, however instead the damaged layer is poorly conducting and the initial surface state is reconstructed below the damage. This behavior is consistent with a surface state that is topologically protected.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1193286

Alternate ID(s):: OSTI ID: 1180728

Report Number(s):: LA-UR-14-29104; PRBMDO

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 8; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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Cited By (6)

Topological surface states interacting with bulk excitations in the Kondo insulator SmB ₆ revealed via planar tunneling spectroscopy Park, Wan Kyu; Sun, Lunan; Noddings, Alexander Proceedings of the National Academy of Sciences, Vol. 113, Issue 24 https://doi.org/10.1073/pnas.1606042113	journal	May 2016
Transport gap in SmB ₆ protected against disorder Eo, Yun Suk; Rakoski, Alexa; Lucien, Juniar Proceedings of the National Academy of Sciences, Vol. 116, Issue 26 https://doi.org/10.1073/pnas.1901245116	journal	June 2019
Pressure-induced exotic states in rare earth hexaborides Sun, Liling; Wu, Qi Reports on Progress in Physics, Vol. 79, Issue 8 https://doi.org/10.1088/0034-4885/79/8/084503	journal	July 2016
Modification and Control of Topological Insulator Surface States Using Surface Disorder Sacksteder, Vincent; Ohtsuki, Tomi; Kobayashi, Koji Physical Review Applied, Vol. 3, Issue 6 https://doi.org/10.1103/physrevapplied.3.064006	journal	June 2015
Thin films of topological Kondo insulator candidate SmB ₆ : Strong spin-orbit torque without exclusive surface conduction Li, Yufan; Ma, Qinli; Huang, S. X. Science Advances, Vol. 4, Issue 1 https://doi.org/10.1126/sciadv.aap8294	journal	January 2018
Modification and Control of Topological Insulator Surface States Using Surface Disorder Sacksteder, Vincent; Ohtsuki, Tomi; Kobayashi, Koji arXiv https://doi.org/10.48550/arxiv.1410.7621	text	January 2014

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