Display options
Cite
Simon F, Dóra B, Murányi F, et al. Generalized Elliott-Yafet theory of electron spin relaxation in metals: origin of the anomalous electron spin lifetime in MgB2. Phys Rev Lett. 2008;101(17):177003doi: 10.1103/PhysRevLett.101.177003.
Simon, F., Dóra, B., Murányi, F., Jánossy, A., Garaj, S., Forró, L., Bud'ko, S., Petrovic, C., & Canfield, P. C. (2008). Generalized Elliott-Yafet theory of electron spin relaxation in metals: origin of the anomalous electron spin lifetime in MgB2. Physical review letters, 101(17), 177003. https://doi.org/10.1103/PhysRevLett.101.177003
Simon, F, et al. "Generalized Elliott-Yafet theory of electron spin relaxation in metals: origin of the anomalous electron spin lifetime in MgB2." Physical review letters vol. 101,17 (2008): 177003. doi: https://doi.org/10.1103/PhysRevLett.101.177003
Simon F, Dóra B, Murányi F, Jánossy A, Garaj S, Forró L, Bud'ko S, Petrovic C, Canfield PC. Generalized Elliott-Yafet theory of electron spin relaxation in metals: origin of the anomalous electron spin lifetime in MgB2. Phys Rev Lett. 2008 Oct 24;101(17):177003. doi: 10.1103/PhysRevLett.101.177003. Epub 2008 Oct 23. PMID: 18999776.
Copy Download .nbib Format: NLM
Share it on

Phys Rev Lett. 2008 Oct 24;101(17):177003. doi: 10.1103/PhysRevLett.101.177003. Epub 2008 Oct 23.

Generalized Elliott-Yafet theory of electron spin relaxation in metals: origin of the anomalous electron spin lifetime in MgB2.

Physical review letters

F Simon, B Dóra, F Murányi, A Jánossy, S Garaj, L Forró, S Bud'ko, C Petrovic, P C Canfield

Affiliations

  1. Budapest University of Technology and Economics, Institute of Physics and Condensed Matter Research Group of the Hungarian Academy of Sciences, H-1521 Budapest, Hungary. [email protected]

PMID: 18999776 DOI: 10.1103/PhysRevLett.101.177003

Abstract

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.

Publication Types