| Full text | |
| Author(s): |
Crivillero, M. Victoria Ale
[1]
;
Konig, M.
[1]
;
Souza, J. C.
[2, 1]
;
Pagliuso, P. G.
[2]
;
Sichelschmidt, J.
[1]
;
Rosa, Priscila F. S.
[3]
;
Fisk, Z.
[4]
;
Wirth, S.
[1]
Total Authors: 8
|
| Affiliation: | [1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden - Germany
[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[3] Los Alamos Natl Lab, Los Alamos, NM 87545 - USA
[4] Univ Calif Irvine, Dept Phys, Irvine, CA 92697 - USA
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW RESEARCH; v. 3, n. 2 JUN 1 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We show that the resistivity plateau of SmB6 at low temperature, typically taken as a hallmark of its conducting surface state, can systematically be influenced by different surface treatments. We investigate the effect of inflicting an increasing number of handmade scratches and microscopically defined focused ion beam-cut trenches on the surfaces of flux-grown Sm1-xGdxB6 with x = 0 and 0.0002. Both treatments increase the resistance of the low-temperature plateau, whereas the bulk resistance at higher temperatures largely remains unaffected. Notably, the temperature at which the resistance deviates from the thermally activated behavior decreases with cumulative surface damage. These features are more pronounced for the focused ion beam treated samples, with the difference likely being related to the absence of microscopic defects such as subsurface cracks. Therefore, our method presents a systematic way of controlling the surface conductance. (AU) | |
| FAPESP's process: | 17/10581-1 - Emergent phenomena in reduced dimension systems |
| Grantee: | Pascoal Jose Giglio Pagliuso |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 20/12283-0 - Scanning tunneling microscopy in topological nontrivial compounds |
| Grantee: | Jean Carlo Souza |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 18/11364-7 - Magnetic properties of complex systems with non-trivial topology |
| Grantee: | Jean Carlo Souza |
| Support Opportunities: | Scholarships in Brazil - Doctorate |