Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current. / Löfwander, Tomas; Grein, Roland; Eschrig, Matthias.

In: Physical Review Letters, Vol. 105, No. 20, 10.11.2010, p. 207001 .

Research output: Contribution to journalLetterpeer-review

Published

Standard

Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current. / Löfwander, Tomas; Grein, Roland; Eschrig, Matthias.

In: Physical Review Letters, Vol. 105, No. 20, 10.11.2010, p. 207001 .

Research output: Contribution to journalLetterpeer-review

Harvard

Löfwander, T, Grein, R & Eschrig, M 2010, 'Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current', Physical Review Letters, vol. 105, no. 20, pp. 207001 . https://doi.org/10.1103/PhysRevLett.105.207001

APA

Vancouver

Author

Löfwander, Tomas ; Grein, Roland ; Eschrig, Matthias. / Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current. In: Physical Review Letters. 2010 ; Vol. 105, No. 20. pp. 207001 .

BibTeX

@article{7229b23b47d94af88ad8a6c3ae9181f5,
title = "Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current",
abstract = "We report an extensive theoretical analysis of point-contact Andreev reflection data available in the literature on ferromagnetic CrO2. We find that the spectra can be well understood within a model of fully spin-polarized bands in CrO2 together with spin-active scattering at the contact. This is in contrast to analysis of the data within extended Blonder-Tinkham-Klapwijk models, which lead to a spin polarization varying between 50% and 100% depending on the transparency of the interface. We propose to utilize both the temperature dependence of the spectra and the excess current at voltages above the gap to resolve the spin polarization in CrO2 in a new generation of experiments.",
author = "Tomas L{\"o}fwander and Roland Grein and Matthias Eschrig",
year = "2010",
month = nov,
day = "10",
doi = "10.1103/PhysRevLett.105.207001",
language = "English",
volume = "105",
pages = "207001 ",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "20",

}

RIS

TY - JOUR

T1 - Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current

AU - Löfwander, Tomas

AU - Grein, Roland

AU - Eschrig, Matthias

PY - 2010/11/10

Y1 - 2010/11/10

N2 - We report an extensive theoretical analysis of point-contact Andreev reflection data available in the literature on ferromagnetic CrO2. We find that the spectra can be well understood within a model of fully spin-polarized bands in CrO2 together with spin-active scattering at the contact. This is in contrast to analysis of the data within extended Blonder-Tinkham-Klapwijk models, which lead to a spin polarization varying between 50% and 100% depending on the transparency of the interface. We propose to utilize both the temperature dependence of the spectra and the excess current at voltages above the gap to resolve the spin polarization in CrO2 in a new generation of experiments.

AB - We report an extensive theoretical analysis of point-contact Andreev reflection data available in the literature on ferromagnetic CrO2. We find that the spectra can be well understood within a model of fully spin-polarized bands in CrO2 together with spin-active scattering at the contact. This is in contrast to analysis of the data within extended Blonder-Tinkham-Klapwijk models, which lead to a spin polarization varying between 50% and 100% depending on the transparency of the interface. We propose to utilize both the temperature dependence of the spectra and the excess current at voltages above the gap to resolve the spin polarization in CrO2 in a new generation of experiments.

U2 - 10.1103/PhysRevLett.105.207001

DO - 10.1103/PhysRevLett.105.207001

M3 - Letter

VL - 105

SP - 207001

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 20

ER -