2008年1月24日
Flux line lattice melting and the formation of a coherent quasiparticle bloch state in the ultraclean URu2Si2 superconductor
Physical Review Letters
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- 巻
- 100
- 号
- 3
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.100.037004
We find that in the ultraclean heavy-fermion superconductor URu2Si2 (Tc0=1.45K) a distinct flux line lattice melting transition with outstanding characters occurs well below the mean-field upper critical fields. We show that a very small number of carriers with heavy mass in this system results in exceptionally large thermal fluctuations even at sub-Kelvin temperatures, which are witnessed by a sizable region of the flux line liquid phase. The uniqueness is further highlighted by an enhancement of the quasiparticle mean free path below the melting transition, implying a possible formation of a quasiparticle Bloch state in the periodic flux line lattice. © 2008 The American Physical Society.
- ID情報
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- DOI : 10.1103/PhysRevLett.100.037004
- ISSN : 0031-9007
- ISSN : 1079-7114
- SCOPUS ID : 38549090596