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Intrinsic Spin and Orbital Hall Effects from Orbital Texture

Cited 23 time in webofscience Cited 25 time in scopus
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Title
Intrinsic Spin and Orbital Hall Effects from Orbital Texture
Author(s)
Dongwook Go; Daegeun Jo; Changyoung Kim; Hyun-Woo Lee
Publication Date
2018-08
Journal
PHYSICAL REVIEW LETTERS, v.121, no.8, pp.086602
Publisher
AMER PHYSICAL SOC
Abstract
We show theoretically that both the intrinsic spin Hall effect (SHE) and orbital Hall effect (OHE) can arise in centrosymmetric systems through momentum-space orbital texture, which is ubiquitous even in centrosymmetric systems unlike spin texture. The OHE occurs even without spin-orbit coupling (SOC) and is converted into the SHE through SOC. The resulting spin Hall conductivity is large (comparable to that of Pt) but depends on the SOC strength in a nonmonotonic way. This mechanism is stable against orbital quenching. This work suggests a path for an ongoing search for materials with stronger SHE. It also calls for experimental efforts to probe orbital degrees of freedom in the OHE and SHE. Possible ways for experimental detection are briefly discussed. © 2018 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/5240
DOI
10.1103/PhysRevLett.121.086602
ISSN
0031-9007
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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