Generalized Elliott-Yafet theory of electron spin relaxation in metals

Simon, F [Simon, Ferenc (Szilárdtestfizika), szerző] MTA-BME Kondenzált Anyagok Fizikája Kutatócsoport (BME / TTK / FI / FT); Dora, B [Dóra, Balázs (Elméleti szilárdt...), szerző] Fizika Tanszék (BME / TTK / FI); Muranyi, F; Janossy, A [Jánossy, András (Szilárdtestfizika), szerző] MTA-BME Kondenzált Anyagok Fizikája Kutatócsoport (BME / TTK / FI / FT); Garaj, S; Forro, L; Bud'ko, S; Petrovic, C; Canfield, PC

Angol nyelvű Szakcikk (Folyóiratcikk) Tudományos
Megjelent: PHYSICAL REVIEW LETTERS 0031-9007 1079-7114 101 (17) Paper: 177003 , 4 p. 2008
  • SJR Scopus - Physics and Astronomy (miscellaneous): D1
  • Fizika
The temperature dependence of the electron-spin relaxation time in MgB2 is anomalous as it does not follow the resistivity above 150 K; it has a maximum around 400 K and decreases for higher temperatures. This violates the well established Elliot-Yafet theory of spin relaxation in metals. The anomaly occurs when the quasiparticle scattering rate (in energy units) is comparable to the energy difference between the conduction and a neighboring bands. The anomalous behavior is related to the unique band structure of MgB2 and the large electron-phonon coupling. The saturating spin relaxation is the spin transport analogue of the Ioffe-Regel criterion of electron transport.
Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
2023-06-03 11:10