Type
ArticleAuthors
Bonbien, VargaManchon, Aurelien

KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Spintronics Theory Group
KAUST Grant Number
OSR-2017-CRG6-3390Date
2020-08-06Preprint Posting Date
2020-05-10Submitted Date
2020-05-12Permanent link to this record
http://hdl.handle.net/10754/665590
Metadata
Show full item recordAbstract
The Smrcka-Streda version of Kubo's linear response formula is widely used in the literature to compute nonequilibrium transport properties of heterostructures. It is particularly useful for the evaluation of intrinsic transport properties associated with the Berry curvature of the Bloch states, such as anomalous and spin Hall currents as well as the dampinglike component of the spin-orbit torque. Here we demonstrate in a very general way that the widely used decomposition of the Kubo-Bastin formula introduced by Smrcka and Streda contains an overlap, which has lead to widespread confusion in the literature regarding the Fermi surface and Fermi sea contributions. To remedy this pathology, we propose a decomposition of the Kubo-Bastin formula based on the permutation properties of the correlation function and derive a set of formulas, without an overlap, that provides direct access to the transport effects of interest. We apply these formulas to selected cases and demonstrate that the Fermi sea and Fermi surface contributions can be uniquely addressed with our symmetrized approach.Citation
Bonbien, V., & Manchon, A. (2020). Symmetrized decomposition of the Kubo-Bastin formula. Physical Review B, 102(8). doi:10.1103/physrevb.102.085113Sponsors
This work was supported by the King Abdullah University of Science and Technology (KAUST) through the award OSR-2017-CRG6-3390 from the Office of Sponsored Research (OSR).Publisher
American Physical Society (APS)Journal
Physical Review BarXiv
2005.04678Additional Links
https://link.aps.org/doi/10.1103/PhysRevB.102.085113ae974a485f413a2113503eed53cd6c53
10.1103/PhysRevB.102.085113