Pauli paramagnetic effects on vortices in superconducting TmNi2B2C

L. Debeer-Schmitt; M. R. Eskildsen; M. Ichioka; K. Machida; N. Jenkins; C. D. Dewhurst; A. B. Abrahamsen; S. L. Bud'Ko; P. C. Canfield

doi:10.1103/PhysRevLett.99.167001

Pauli paramagnetic effects on vortices in superconducting TmNi2B2C

L. Debeer-Schmitt, M. R. Eskildsen, M. Ichioka, K. Machida, N. Jenkins, C. D. Dewhurst, A. B. Abrahamsen, S. L. Bud'Ko, P. C. Canfield

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The magnetic field distribution around the vortices in TmNi2B2C in the paramagnetic phase was studied experimentally as well as theoretically. The vortex form factor, measured by small-angle neutron scattering, is found to be field independent up to 0.6Hc2 followed by a sharp decrease at higher fields. The data are fitted well by solutions to the Eilenberger equations when paramagnetic effects due to the exchange interaction with the localized 4f Tm moments are included. The induced paramagnetic moments around the vortex cores act to maintain the field contrast probed by the form factor.

Original language	English
Article number	167001
Journal	Physical Review Letters
Volume	99
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.99.167001
State	Published - Oct 16 2007
Externally published	Yes

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10.1103/PhysRevLett.99.167001

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title = "Pauli paramagnetic effects on vortices in superconducting TmNi2B2C",

abstract = "The magnetic field distribution around the vortices in TmNi2B2C in the paramagnetic phase was studied experimentally as well as theoretically. The vortex form factor, measured by small-angle neutron scattering, is found to be field independent up to 0.6Hc2 followed by a sharp decrease at higher fields. The data are fitted well by solutions to the Eilenberger equations when paramagnetic effects due to the exchange interaction with the localized 4f Tm moments are included. The induced paramagnetic moments around the vortex cores act to maintain the field contrast probed by the form factor.",

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AU - Debeer-Schmitt, L.

AU - Eskildsen, M. R.

AU - Ichioka, M.

AU - Machida, K.

AU - Jenkins, N.

AU - Dewhurst, C. D.

AU - Abrahamsen, A. B.

AU - Bud'Ko, S. L.

AU - Canfield, P. C.

PY - 2007/10/16

Y1 - 2007/10/16

N2 - The magnetic field distribution around the vortices in TmNi2B2C in the paramagnetic phase was studied experimentally as well as theoretically. The vortex form factor, measured by small-angle neutron scattering, is found to be field independent up to 0.6Hc2 followed by a sharp decrease at higher fields. The data are fitted well by solutions to the Eilenberger equations when paramagnetic effects due to the exchange interaction with the localized 4f Tm moments are included. The induced paramagnetic moments around the vortex cores act to maintain the field contrast probed by the form factor.

AB - The magnetic field distribution around the vortices in TmNi2B2C in the paramagnetic phase was studied experimentally as well as theoretically. The vortex form factor, measured by small-angle neutron scattering, is found to be field independent up to 0.6Hc2 followed by a sharp decrease at higher fields. The data are fitted well by solutions to the Eilenberger equations when paramagnetic effects due to the exchange interaction with the localized 4f Tm moments are included. The induced paramagnetic moments around the vortex cores act to maintain the field contrast probed by the form factor.

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JO - Physical Review Letters

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ER -

Pauli paramagnetic effects on vortices in superconducting TmNi2B2C

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