涡流
凝聚态物理
超导电性
无定形固体
材料科学
量子隧道
薄膜
磁场
物理
纳米技术
化学
机械
结晶学
量子力学
作者
Rishabh Duhan,Sudipta Sengupta,Ruchi Tomar,Somak Basistha,Vivas Bagwe,Chandan Dasgupta,Pratap Raychaudhuri
出处
期刊:Cornell University - arXiv
日期:2023-04-21
标识
DOI:10.1103/physrevb.108.l180503
摘要
We report the formation of a pinned vortex liquid spanning a very large region of the magnetic field-temperature parameter space in a 5 nm thick amorphous superconducting Re_xZr (x~6) (a-ReZr) thin film, using a combination of low-temperature scanning tunnelling spectroscopic (STS) imaging and magnetotransport measurements. The nature of the vortex liquid differs significantly from a regular liquid. Analysing series of STS images captured as a function of time, we observe that the interplay of pinning and intervortex interactions produces a very inhomogeneous state, where some vortices remain static, whereas others move forming a percolating network along which vortices are mobile. With increase in temperature or magnetic field this network becomes denser eventually encompassing all vortices. Our results provide key insight on the nature of a pinned vortex liquid and some of the peculiarities in the transport properties of ultrathin superconducting films.
科研通智能强力驱动
Strongly Powered by AbleSci AI