双纳米线超导岛中的多端电子输运。

Electronic Transport in Double-Nanowire Superconducting Islands with Multiple Terminals.

机构信息

Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.

Sino-Danish Center for Education and Research (SDC) SDC Building, Yanqihu Campus, University of Chinese Academy of Sciences, 380 Huaibeizhuang, Huairou District, 101408 Beijing, China.

出版信息

Nano Lett. 2022 Jul 27;22(14):5765-5772. doi: 10.1021/acs.nanolett.2c01161. Epub 2022 Jul 14.

DOI:10.1021/acs.nanolett.2c01161

PMID:35833741

Abstract

We characterize in situ grown parallel nanowires bridged by a superconducting island. The magnetic-field and temperature dependence of Coulomb blockade peaks measured across different pairs of nanowire ends suggest the presence of a subgap state extended over the hybrid parallel-nanowire island. Being gate-tunable, accessible by multiple terminals, and free of quasiparticle poisoning, these nanowires show promise for the implementation of several proposals that rely on parallel nanowire platforms.

摘要

我们对由超导岛桥接的原位生长平行纳米线进行了特性描述。通过测量不同纳米线末端对之间的库仑阻塞峰的磁场和温度依赖性，我们发现存在一个扩展到混合平行纳米线岛的亚带隙状态。这些纳米线具有可调谐的栅极、可通过多个端子访问且不受准粒子中毒的影响，因此有望实现依赖于平行纳米线平台的多项提案。