Physical Review B, volume 90, issue 9, publication number 094408

Superfluid spin transport through antiferromagnetic insulators

Publication typeJournal Article
Publication date2014-09-11
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
A theoretical proposal for realizing and detecting spin supercurrent in an isotropic antiferromagnetic insulator is reported. Superfluid spin transport is achieved by inserting the antiferromagnet between two metallic reservoirs and establishing a spin accumulation in one reservoir such that a spin bias is applied across the magnet. We consider a class of bipartite antiferromagnets with N\'eel ground states, and temperatures well below the ordering temperature, where spin transport is mediated essentially by the condensate. Landau-Lifshitz and magnetocircuit theories are used to directly relate spin current in different parts of the heterostructure to the spin-mixing conductances characterizing the $\text{antiferromagnet}|\text{metal}$ interfaces and the antiferromagnet bulk damping parameters, quantities all obtainable from experiments. We study the efficiency of spin angular-momentum transfer at an $\text{antiferromagnet}|\text{metal}$ interface by developing a microscopic scattering theory for the interface and extracting the spin-mixing conductance for a simple model. Within the model, a quantitative comparison between the spin-mixing conductances obtained for the $\text{antiferromagnet}|\text{metal}$ and $\text{ferromagnet}|\text{metal}$ interfaces is made.

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Takei S. et al. Superfluid spin transport through antiferromagnetic insulators // Physical Review B. 2014. Vol. 90. No. 9. 094408
GOST all authors (up to 50) Copy
Takei S., Halperin B. I., Halperin B. I., Yacoby A., Yacoby A., Tserkovnyak Y. Superfluid spin transport through antiferromagnetic insulators // Physical Review B. 2014. Vol. 90. No. 9. 094408
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RIS Copy
TY - JOUR
DO - 10.1103/physrevb.90.094408
UR - https://doi.org/10.1103/physrevb.90.094408
TI - Superfluid spin transport through antiferromagnetic insulators
T2 - Physical Review B
AU - Takei, So
AU - Halperin, Bertrand I.
AU - Yacoby, Amir
AU - Tserkovnyak, Yaroslav
AU - Halperin, B I
AU - Yacoby, A.
PY - 2014
DA - 2014/09/11
PB - American Physical Society (APS)
IS - 9
VL - 90
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex
Cite this
BibTex Copy
@article{2014_Takei,
author = {So Takei and Bertrand I. Halperin and Amir Yacoby and Yaroslav Tserkovnyak and B I Halperin and A. Yacoby},
title = {Superfluid spin transport through antiferromagnetic insulators},
journal = {Physical Review B},
year = {2014},
volume = {90},
publisher = {American Physical Society (APS)},
month = {sep},
url = {https://doi.org/10.1103/physrevb.90.094408},
number = {9},
doi = {10.1103/physrevb.90.094408}
}
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