Nonquasiparticle states in Co2MnSi evidenced through magnetic tunnel junction spectroscopy measurements

L. Chioncel; Y. Sakuraba; E. Arrigoni; M. I. Katsnelson; M. Oogane; Y. Ando; T. Miyazaki; E. Burzo; A. I. Lichtenstein

doi:10.1103/PhysRevLett.100.086402

Nonquasiparticle states in Co2MnSi evidenced through magnetic tunnel junction spectroscopy measurements

L. Chioncel, Y. Sakuraba, E. Arrigoni, M. I. Katsnelson, M. Oogane, Y. Ando, T. Miyazaki, E. Burzo, A. I. Lichtenstein

ENG - Applied Physics

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Abstract

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 spinpolarization in this material.

Original language	English
Article number	086402
Journal	Physical Review Letters
Volume	100
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.100.086402
Publication status	Published - 2008 Feb 29

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10.1103/PhysRevLett.100.086402

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abstract = "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 spinpolarization in this material.",

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AU - Chioncel, L.

AU - Sakuraba, Y.

AU - Arrigoni, E.

AU - Katsnelson, M. I.

AU - Oogane, M.

AU - Ando, Y.

AU - Miyazaki, T.

AU - Burzo, E.

AU - Lichtenstein, A. I.

PY - 2008/2/29

Y1 - 2008/2/29

N2 - 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 spinpolarization in this material.

AB - 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 spinpolarization in this material.

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ER -

Nonquasiparticle states in Co2MnSi evidenced through magnetic tunnel junction spectroscopy measurements

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