Abstract
The quasiparticle density of states (DOS) in the vortex state has been probed by specific heat measurements under magnetic fields (H) for clean and dirty s-wave superconductors, Y(Ni1 - xPtx)2B2C and Nb1 - xTaxSe2. We find that the quasiparticle DOS per vortex is appreciably H-dependent in the clean-limit superconductors, while it is H-independent in the dirty superconductors as expected from a conventional rigid normal electron core picture. We discuss possible origins for our observations in terms of the shrinking of the vortex core radius with increasing H.
| Original language | English |
|---|---|
| Pages (from-to) | 1078-1081 |
| Number of pages | 4 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 68 |
| Issue number | 4 |
| Publication status | Published - Apr 1999 |
| Externally published | Yes |
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Keywords
- NbSe
- Quasiparticle density of states
- Vortex state
- YNiBC
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Quasiparticle Density of States of Clean and Dirty s-Wave Superconductors in the Vortex State. / Nohara, Minoru; Isshiki, Masanobu; Sakai, Fumiko; Takagi, Hidenori.
In: Journal of the Physical Society of Japan, Vol. 68, No. 4, 04.1999, p. 1078-1081.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Quasiparticle Density of States of Clean and Dirty s-Wave Superconductors in the Vortex State
AU - Nohara, Minoru
AU - Isshiki, Masanobu
AU - Sakai, Fumiko
AU - Takagi, Hidenori
PY - 1999/4
Y1 - 1999/4
N2 - The quasiparticle density of states (DOS) in the vortex state has been probed by specific heat measurements under magnetic fields (H) for clean and dirty s-wave superconductors, Y(Ni1 - xPtx)2B2C and Nb1 - xTaxSe2. We find that the quasiparticle DOS per vortex is appreciably H-dependent in the clean-limit superconductors, while it is H-independent in the dirty superconductors as expected from a conventional rigid normal electron core picture. We discuss possible origins for our observations in terms of the shrinking of the vortex core radius with increasing H.
AB - The quasiparticle density of states (DOS) in the vortex state has been probed by specific heat measurements under magnetic fields (H) for clean and dirty s-wave superconductors, Y(Ni1 - xPtx)2B2C and Nb1 - xTaxSe2. We find that the quasiparticle DOS per vortex is appreciably H-dependent in the clean-limit superconductors, while it is H-independent in the dirty superconductors as expected from a conventional rigid normal electron core picture. We discuss possible origins for our observations in terms of the shrinking of the vortex core radius with increasing H.
KW - NbSe
KW - Quasiparticle density of states
KW - Vortex state
KW - YNiBC
UR - http://www.scopus.com/inward/record.url?scp=0033414159&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033414159&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033414159
VL - 68
SP - 1078
EP - 1081
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 4
ER -