Spin-lattice relaxation time of conduction electrons in Mg B2

F. Simon, F. Murányi, T. Fehér, A. Jánossy, L. Forró, C. Petrovic, S. L. Bud'ko, P. C. Canfield

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The spin-lattice relaxation time, T1, of conduction electrons is measured as a function of temperature and magnetic field in Mg B2 in the normal and superconducting states. The method is based on the detection of the z component of the conduction electron magnetization under electron-spin-resonance conditions with amplitude-modulated microwave excitation. Measurement of T1 below Tc at 0.32 T allows us to disentangle contributions from the two Fermi surfaces of Mg B2, as this field restores the normal state on the part of the Fermi surface with π symmetry only.

Original languageEnglish
Article number024519
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number2
DOIs
Publication statusPublished - Jul 26 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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