Flux Line Lattice Melting and the Formation of a Coherent Quasiparticle Bloch State in the Ultraclean URu$_2$Si$_2$ Superconductor

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dc.creatorOkazaki, R.
dc.creatorKasahara, Y.
dc.creatorShishido, H.
dc.creatorKonczykowski, M.
dc.creatorBehnia, K.
dc.creatorHaga, Y.
dc.creatorMatsuda, T. D.
dc.creatorOnuki, Y.
dc.creatorShibauchi, T.
dc.creatorMatsuda, Y.
dc.date2007-10-12
dc.date2007-12-16
dc.date.accessioned2026-07-07T09:33:35Z
dc.date.available2026-07-07T09:33:35Z
dc.descriptionWe find that in ultraclean heavy-fermion superconductor URu$_2$Si$_2$ ($T_{c0}=1.45$ K) 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 subkelvin 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.
dc.description5 pages, 4 figures, accepted for publication in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0710.2382
dc.identifierhttp://arxiv.org/abs/0710.2382
dc.identifierPhys. Rev. Lett. 100, 037004 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.037004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/159183
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleFlux Line Lattice Melting and the Formation of a Coherent Quasiparticle Bloch State in the Ultraclean URu$_2$Si$_2$ Superconductor
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