Pseudogap in Fe2VGa: NMR evidence

C. S. Lue, Joseph H. Ross

研究成果: Article同行評審

33 引文 斯高帕斯(Scopus)


We report the results of a 51V and 69Ga nuclear magnetic resonance (NMR) study of Fe2VGa at temperatures between 4 and 450 K. The presence of magnetic antisite defects is deduced from the NMR linewidth, which displays a Curie-law temperature dependence. The absence of associated NMR shifts indicates the material to be intrinsically nonmagnetic. At low temperatures the NMR spin-lattice relaxation rate exhibits Korringa behavior, indicating a small carrier density at the Fermi level. At elevated temperatures, the Knight shifts and NMR relaxation rates go over to a thermally activated response, a semiconductor-like behavior. These results are consistent with pseudogap features identified by recent band structure calculations. The Fermi level density of states deduced from NMR is considerably smaller than given by the specific heat coefficient, γ. The electronic properties are compared to the isostructural semimetal Fe2VAl.

頁(從 - 到)544201-544206
期刊Physical Review B - Condensed Matter and Materials Physics
出版狀態Published - 2001

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學


深入研究「Pseudogap in Fe2VGa: NMR evidence」主題。共同形成了獨特的指紋。