Quasiparticles in the vortex state of V3Si.
Quasiparticles in the vortex state of V3Si.
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V3Si 涡旋态的准粒子。
DOI：
10.1103/physrevlett.72.701
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发表时间：
1994
影响因子：
8.6
通讯作者：
van der Wel PJ
中科院分区：
文献类型：
--
作者：
Corcoran;Harrison;Hayden;Meeson;Springford;van der Wel PJ
利用de Haas-van Alphen效应研究了超导体v3si涡旋态的低能准粒子激发。量子振荡持续到令人惊讶的低值b0 / b2c ~ 0.6和T/ t2c ~ 0.001。超导态引入了场相关的准粒子阻尼，在所研究的最低场处，其值为τ−1 0.25 Δ，远远小于超导间隙Δ。量子振荡归因于无间隙激发谱的存在，并且可能是涡旋状态下超导体的普遍特征。
Low-energy quasiparticle excitations in the vortex state of the superconductor V 3 Si have been investigated using the de Haas–van Alphen effect. Quantum oscillations persist to surprisingly low values of B 0/B c 2∼ 0.6 and T/T c∼ 0.001. The superconducting state introduces a field-dependent quasiparticle damping which has a value ħ τ− 1≊ 0.25 Δ at the lowest fields investigated, considerably less than the superconducting gap Δ. Quantum oscillations are attributed to the presence of a gapless excitation spectrum and may be a universal characteristic of superconductors in the vortex state.