Intuitive approach to the unified theory of spin relaxation

Lénárd Szolnoki, B. Dóra, Annamária Kiss, Jaroslav Fabian, F. Simon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Spin relaxation is conventionally discussed using two different approaches for materials with and without inversion symmetry. The former is known as the Elliott-Yafet (EY) theory and for the latter the D'yakonov-Perel' (DP) theory applies. We discuss herein a simple and intuitive approach to demonstrate that the two seemingly disparate mechanisms are closely related. A compelling analogy between the respective Hamiltonians is presented, and that the usual derivation of spin-relaxation times, in the respective frameworks of the two theories, can be performed. The result also allows us to obtain less canonical spin-relaxation regimes, i.e. the generalization of the EY when the material has a large quasiparticle broadening, and the DP mechanism in ultrapure semiconductors. The method also allows a practical and intuitive numerical implementation of the spin-relaxation calculation, which is demonstrated for MgB2, which has anomalous spin-relaxation properties.

Original languageEnglish
Article number245123
JournalPhysical Review B
Volume96
Issue number24
DOIs
Publication statusPublished - Dec 18 2017

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Hamiltonians
Relaxation time
Semiconductor materials
derivation
relaxation time
inversions
symmetry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Intuitive approach to the unified theory of spin relaxation. / Szolnoki, Lénárd; Dóra, B.; Kiss, Annamária; Fabian, Jaroslav; Simon, F.

In: Physical Review B, Vol. 96, No. 24, 245123, 18.12.2017.

Research output: Contribution to journalArticle

Szolnoki, Lénárd ; Dóra, B. ; Kiss, Annamária ; Fabian, Jaroslav ; Simon, F. / Intuitive approach to the unified theory of spin relaxation. In: Physical Review B. 2017 ; Vol. 96, No. 24.
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