Ubiquitous Spin-Orbit Coupling in a Screw Dislocation with High Spin Coherency

Physical Review Letters
Lin HuFeng Liu

Abstract

We theoretically demonstrate that screw dislocation (SD), a 1D topological defect widely present in semiconductors, exhibits ubiquitously a new form of spin-orbit coupling (SOC) effect. Differing from the widely known conventional 2D Rashba-Dresselhaus (RD) SOC effect that typically exists at surfaces or interfaces, the deep-level nature of SD-SOC states in semiconductors readily makes it an ideal SOC. Remarkably, the spin texture of 1D SD-SOC, pertaining to the inherent symmetry of SD, exhibits a significantly higher degree of spin coherency than the 2D RD-SOC. Moreover, the 1D SD-SOC can be tuned by ionicity in compound semiconductors to ideally suppress spin relaxation, as demonstrated by comparative first-principles calculations of SDs in Si/Ge, GaAs, and SiC. Our findings therefore open a new door to manipulating spin transport in semiconductors by taking advantage of an otherwise detrimental topological defect.

References

Oct 24, 1988·Physical Review Letters·O L AlerhandJ D Joannopoulos
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
May 7, 2003·Physical Review Letters·John SchliemannDaniel Loss
Aug 25, 2004·Physical Review Letters·Yu M KoroteevPh Hofmann
Dec 31, 2008·Physical Review Letters·J Hugo DilJürg Osterwalder
Sep 19, 2009·Science·Hyun Cheol KooMark Johnson
Jun 21, 2011·Nature Materials·K IshizakaY Tokura
Mar 10, 2012·Physical Review Letters·A VarykhalovO Rader
Oct 17, 2012·Advanced Materials·Domenico Di SanteSilvia Picozzi
Aug 21, 2015·Nature Materials·A ManchonR A Duine
Jul 6, 2017·Nano Letters·Mingda LiGang Chen
Jan 31, 2018·Nano Letters·Christian RinaldiRiccardo Bertacco

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