Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi2B2C probed by μSR

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

doi:10.1016/S0921-4526(00)00415-4

Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi₂B₂C probed by μSR

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

Research output: Contribution to journal › Conference article

7 Citations (Scopus)

Abstract

Muon spin rotation measurements were performed to deduce the magnetic penetration depth λ and vortex core radius ρ_v in the mixed state of YNi₂B₂C for H_c1≪H≥0.7 H_c2. A preliminary analysis based on the modified London model shows that ρ_v decreases steeply with increasing H, while λ increases linearly in H. Results also shows that the vortex core radius ρ_v shrinks with increasing field and subsequently levels off at higher fields. These indicate the need to reconsider the conventional rigid normal electron core picture by taking account of vortex-vortex interaction mediated by delocalized quasi particles.

Original language	English
Pages (from-to)	377-380
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	289-290
DOIs	https://doi.org/10.1016/S0921-4526(00)00415-4
Publication status	Published - Aug 2000
Externally published	Yes
Event	8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) - Les Diablerets, Switz Duration: Aug 30 1999 → Sep 3 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Ohishi, K., Kakuta, K., Akimitsu, J., Higemoto, W., Kadono, R., Miller, R. I., Price, A., Kiefl, R. F., Sonier, J. E., Nohara, M., Suzuki, H., & Takagi, H. (2000). Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi₂B₂C probed by μSR. Physica B: Condensed Matter, 289-290, 377-380. https://doi.org/10.1016/S0921-4526(00)00415-4

Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi₂B₂C probed by μSR. / Ohishi, K.; Kakuta, K.; Akimitsu, J.; Higemoto, W.; Kadono, R.; Miller, R. I.; Price, A.; Kiefl, R. F.; Sonier, J. E.; Nohara, M.; Suzuki, H.; Takagi, H.

In: Physica B: Condensed Matter, Vol. 289-290, 08.2000, p. 377-380.

Research output: Contribution to journal › Conference article

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title = "Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi2B2C probed by μSR",

abstract = "Muon spin rotation measurements were performed to deduce the magnetic penetration depth λ and vortex core radius ρv in the mixed state of YNi2B2C for Hc1≪H≥0.7 Hc2. A preliminary analysis based on the modified London model shows that ρv decreases steeply with increasing H, while λ increases linearly in H. Results also shows that the vortex core radius ρv shrinks with increasing field and subsequently levels off at higher fields. These indicate the need to reconsider the conventional rigid normal electron core picture by taking account of vortex-vortex interaction mediated by delocalized quasi particles.",

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

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T1 - Anomalous field dependence of the vortex-core radius and magnetic penetration depth in YNi2B2C probed by μSR

AU - Ohishi, K.

AU - Kakuta, K.

AU - Akimitsu, J.

AU - Higemoto, W.

AU - Kadono, R.

AU - Miller, R. I.

AU - Price, A.

AU - Kiefl, R. F.

AU - Sonier, J. E.

AU - Nohara, M.

AU - Suzuki, H.

AU - Takagi, H.

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AB - Muon spin rotation measurements were performed to deduce the magnetic penetration depth λ and vortex core radius ρv in the mixed state of YNi2B2C for Hc1≪H≥0.7 Hc2. A preliminary analysis based on the modified London model shows that ρv decreases steeply with increasing H, while λ increases linearly in H. Results also shows that the vortex core radius ρv shrinks with increasing field and subsequently levels off at higher fields. These indicate the need to reconsider the conventional rigid normal electron core picture by taking account of vortex-vortex interaction mediated by delocalized quasi particles.

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EP - 380

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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T2 - 8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99)

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