Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR

S. Kuroiwa, H. Takagiwa, M. Yamazawa, Y. Tomita, Jun Akimitsu, K. Ohishi, A. Koda, S. R. Saha, R. Kadono, W. Higemoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Magnetic field dependence of the effective penetration depth (λ) determined by μSR is reported for 1H-Ca(Al0.5Si0.5)2, a structurally new phase of Ca(Al0.5Si0.5)2. The new phase has an AlB2-type crystal structure with P3 symmetry which, in contrast to earlier reports, does not exhibit superlattice structure along the c-axis. The bulk susceptibility measurement indicates that the upper critical field is much lower than that in superstructured ones for both c- and a-axis directions. A weak anisotropy in the superconducting order parameter is suggested from the increase of λ with increasing external field.

Original languageEnglish
Pages (from-to)251-254
Number of pages4
JournalPhysica B: Condensed Matter
Volume374-375
DOIs
Publication statusPublished - Mar 31 2006
Externally publishedYes

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Crystal symmetry
Anisotropy
Crystal structure
Magnetic fields
penetration
magnetic permeability
anisotropy
crystal structure
symmetry
magnetic fields
Direction compound

Keywords

  • μSR
  • Ca(Al Si )
  • Flux line lattice
  • Magnetic penetration depth

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR. / Kuroiwa, S.; Takagiwa, H.; Yamazawa, M.; Tomita, Y.; Akimitsu, Jun; Ohishi, K.; Koda, A.; Saha, S. R.; Kadono, R.; Higemoto, W.

In: Physica B: Condensed Matter, Vol. 374-375, 31.03.2006, p. 251-254.

Research output: Contribution to journalArticle

Kuroiwa, S, Takagiwa, H, Yamazawa, M, Tomita, Y, Akimitsu, J, Ohishi, K, Koda, A, Saha, SR, Kadono, R & Higemoto, W 2006, 'Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR', Physica B: Condensed Matter, vol. 374-375, pp. 251-254. https://doi.org/10.1016/j.physb.2005.11.067
Kuroiwa, S. ; Takagiwa, H. ; Yamazawa, M. ; Tomita, Y. ; Akimitsu, Jun ; Ohishi, K. ; Koda, A. ; Saha, S. R. ; Kadono, R. ; Higemoto, W. / Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR. In: Physica B: Condensed Matter. 2006 ; Vol. 374-375. pp. 251-254.
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AU - Kuroiwa, S.

AU - Takagiwa, H.

AU - Yamazawa, M.

AU - Tomita, Y.

AU - Akimitsu, Jun

AU - Ohishi, K.

AU - Koda, A.

AU - Saha, S. R.

AU - Kadono, R.

AU - Higemoto, W.

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AB - Magnetic field dependence of the effective penetration depth (λ) determined by μSR is reported for 1H-Ca(Al0.5Si0.5)2, a structurally new phase of Ca(Al0.5Si0.5)2. The new phase has an AlB2-type crystal structure with P3 symmetry which, in contrast to earlier reports, does not exhibit superlattice structure along the c-axis. The bulk susceptibility measurement indicates that the upper critical field is much lower than that in superstructured ones for both c- and a-axis directions. A weak anisotropy in the superconducting order parameter is suggested from the increase of λ with increasing external field.

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