Nonquasiparticle states in Co2MnSi evidenced through magnetic tunnel junction spectroscopy measurements

被引：92

作者：

Chioncel, L. ^{[1
,2
]}

Sakuraba, Y. ^{[3
]}

Arrigoni, E. ^{[1
]}

Katsnelson, M. I. ^{[4
]}

Oogane, M. ^{[3
]}

Ando, Y. ^{[3
]}

Miyazaki, T. ^{[3
]}

Burzo, E.

Lichtenstein, A. I. ^{[5
]}

机构：

[1] Graz Univ Technol, Inst Theoret Phys, A-8010 Graz, Austria

[2] Univ Oradea, Fac Sci, RO-410087 Oradea, Romania

[3] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

[4] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 ED Nijmegen, Netherlands

[5] Univ Hamburg, Inst Theoret Phys, DE-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.100.086402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effects of electronic correlations in the full-Heusler Co2MnSi, by combining a theoretical analysis of the spin-resolved density of states with tunneling-conductance spectroscopy measurements using Co2MnSi as electrode. Both experimental and theoretical results confirm the existence of so-called nonquasiparticle states and their crucial contribution to the finite-temperature spin polarization in this material.

引用

页数：4

共 29 条

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