Abstract
The vortex state defined by two characteristic length scales, magnetic penetration depth (λ) and coherence length (ξ), in a layered hexagonal superconductor CaAlSi was probed using muon spin rotation. From preliminary analysis using modified London model, we found that the in-plane λ increases with increasing magnetic field while inter-plane λ is almost independent of magnetic field. The presence of field-induced quasiparticle excitation manifested in the field dependence of λ suggests that CaAlSi has an anisotropic gap structure (nodes/dips or multi-gapped).
| Original language | English |
|---|---|
| Pages (from-to) | 2124-2128 |
| Number of pages | 5 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 68 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2007 |
| Externally published | Yes |
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Keywords
- A. Superconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
μ SR measurements on the vortex lattice of CaAlSi : Anisotropic response in magnetic penetration depth. / Kuroiwa, S.; Satoh, K. H.; Koda, A.; Kadono, R.; Ohishi, K.; Higemoto, W.; Akimitsu, Jun.
In: Journal of Physics and Chemistry of Solids, Vol. 68, No. 11, 11.2007, p. 2124-2128.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - μ SR measurements on the vortex lattice of CaAlSi
T2 - Anisotropic response in magnetic penetration depth
AU - Kuroiwa, S.
AU - Satoh, K. H.
AU - Koda, A.
AU - Kadono, R.
AU - Ohishi, K.
AU - Higemoto, W.
AU - Akimitsu, Jun
PY - 2007/11
Y1 - 2007/11
N2 - The vortex state defined by two characteristic length scales, magnetic penetration depth (λ) and coherence length (ξ), in a layered hexagonal superconductor CaAlSi was probed using muon spin rotation. From preliminary analysis using modified London model, we found that the in-plane λ increases with increasing magnetic field while inter-plane λ is almost independent of magnetic field. The presence of field-induced quasiparticle excitation manifested in the field dependence of λ suggests that CaAlSi has an anisotropic gap structure (nodes/dips or multi-gapped).
AB - The vortex state defined by two characteristic length scales, magnetic penetration depth (λ) and coherence length (ξ), in a layered hexagonal superconductor CaAlSi was probed using muon spin rotation. From preliminary analysis using modified London model, we found that the in-plane λ increases with increasing magnetic field while inter-plane λ is almost independent of magnetic field. The presence of field-induced quasiparticle excitation manifested in the field dependence of λ suggests that CaAlSi has an anisotropic gap structure (nodes/dips or multi-gapped).
KW - A. Superconductors
UR - http://www.scopus.com/inward/record.url?scp=35748953125&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35748953125&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2007.08.048
DO - 10.1016/j.jpcs.2007.08.048
M3 - Article
VL - 68
SP - 2124
EP - 2128
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 11
ER -