BCS超导体中的复合限制能量弛豫
Recombination limited energy relaxation in a BCS superconductor
摘要：
我们研究了亚开尔文温度下的准粒子能量弛豫，通过将超热电子注入铝岛，测量了超导态和正常态下电子到声子的能流。数据表明，在低温下的超导状态下，在定性协议与清洁超导体的准经典理论的磁通量的强烈减少。从数量上看，超导态和正常态的能流都超过了理论能流，这可能意味着一个增强的或额外的弛豫过程。
英文摘要：
We study quasiparticle energy relaxation at sub-kelvin temperatures by injecting hot electrons into an aluminium island and measuring the energy flux from electrons into phonons both in the superconducting and in the normal state. The data show strong reduction of the flux at low temperatures in the superconducting state, in qualitative agreement with the presented quasiclassical theory for clean superconductors. Quantitatively, the energy flux exceeds that from the theory both in the superconducting and in the normal state, possibly suggesting an enhanced or additional relaxation process.
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