Nonlocal effects and shrinkage of the vortex core radius in YNi2B2C probed by muon spin rotation

K. Ohishi; K. Kakuta; J. Akimitsu; W. Higemoto; R. Kadono; J. E. Sonier; A. N. Price; R. I. Miller; R. F. Kiefl; Minoru Nohara; H. Suzuki; H. Takagi

Nonlocal effects and shrinkage of the vortex core radius in YNi₂B₂C probed by muon spin rotation

K. Ohishi, K. Kakuta, J. Akimitsu, W. Higemoto, R. Kadono, J. E. Sonier, A. N. Price, R. I. Miller, R. F. Kiefl, Minoru Nohara, H. Suzuki, H. Takagi

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

26 Citations (Scopus)

Abstract

The magnetic field distribution in the vortex state of YNi₂B₂C has been probed by muon spin rotation. The analysis based on the London model with nonlocal corrections shows that the vortex lattice has changed from hexagonal to square with increasing magnetic field H. At low fields the vortex core radius, ρν(H), decreases with increasing H much steeper than what is expected from the √H behavior of the Sommerfeld constant y(H), strongly suggesting that the anomaly in γ(H) primarily arises from the quasiparticle excitations outside the vortex cores.

Original language	English
Article number	140505
Pages (from-to)	1405051-1405054
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	14
Publication status	Published - Apr 1 2002
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Nonlocal effects and shrinkage of the vortex core radius in YNi2B2C probed by muon spin rotation",

abstract = "The magnetic field distribution in the vortex state of YNi2B2C has been probed by muon spin rotation. The analysis based on the London model with nonlocal corrections shows that the vortex lattice has changed from hexagonal to square with increasing magnetic field H. At low fields the vortex core radius, ρν(H), decreases with increasing H much steeper than what is expected from the √H behavior of the Sommerfeld constant y(H), strongly suggesting that the anomaly in γ(H) primarily arises from the quasiparticle excitations outside the vortex cores.",

author = "K. Ohishi and K. Kakuta and J. Akimitsu and W. Higemoto and R. Kadono and Sonier, {J. E.} and Price, {A. N.} and Miller, {R. I.} and Kiefl, {R. F.} and Minoru Nohara and H. Suzuki and H. Takagi",

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T1 - Nonlocal effects and shrinkage of the vortex core radius in YNi2B2C probed by muon spin rotation

AU - Ohishi, K.

AU - Kakuta, K.

AU - Akimitsu, J.

AU - Higemoto, W.

AU - Kadono, R.

AU - Sonier, J. E.

AU - Price, A. N.

AU - Miller, R. I.

AU - Kiefl, R. F.

AU - Nohara, Minoru

AU - Suzuki, H.

AU - Takagi, H.

PY - 2002/4/1

Y1 - 2002/4/1

N2 - The magnetic field distribution in the vortex state of YNi2B2C has been probed by muon spin rotation. The analysis based on the London model with nonlocal corrections shows that the vortex lattice has changed from hexagonal to square with increasing magnetic field H. At low fields the vortex core radius, ρν(H), decreases with increasing H much steeper than what is expected from the √H behavior of the Sommerfeld constant y(H), strongly suggesting that the anomaly in γ(H) primarily arises from the quasiparticle excitations outside the vortex cores.

AB - The magnetic field distribution in the vortex state of YNi2B2C has been probed by muon spin rotation. The analysis based on the London model with nonlocal corrections shows that the vortex lattice has changed from hexagonal to square with increasing magnetic field H. At low fields the vortex core radius, ρν(H), decreases with increasing H much steeper than what is expected from the √H behavior of the Sommerfeld constant y(H), strongly suggesting that the anomaly in γ(H) primarily arises from the quasiparticle excitations outside the vortex cores.

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SN - 1098-0121

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JF - Physical Review B-Condensed Matter

IS - 14

M1 - 140505

ER -

Nonlocal effects and shrinkage of the vortex core radius in YNi₂B₂C probed by muon spin rotation

Abstract

ASJC Scopus subject areas

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