2022年6月6日 · A Yu-Shiba-Rusinov (YSR) state is a localized in-gap state induced by a magnetic impurity in a superconductor. Recent experiments used an STM tip to manipulate the exchange coupling between an Fe adatom and the FeTe 0.55 Se 0.45 superconductor possessing a Z 2 nontrivial band structure with topological surface states.

超导体具有零电阻、完全抗磁性等特殊的性质，同时大量的事实证明超导体中准粒子激发存在着能隙，而后者的能隙大小与超导的序参量 \Delta 有着密切的关系。 在正常金属与超导体通过一个氧化物隔绝组成的体系中，实验发现当两边加的电压高于 \Delta /e 时才会产生隧穿电流，这暗示了超导能隙的存在与大小。 超导能隙的存在预示着超导与正常金属之间会存在一个势垒，如果金属（N）中有一个能量低于超导（S）能隙的电子从金属中往超导体中入射，那么它就有一定几 …

2020年8月31日 · Yu-Shiba-Rusinov态是由磁性杂质原子在超导体中诱导出的超导能隙内的束缚态. 它们可以作为构造拓扑超导态的基本单元. 本文阐述了基于Yu-Shiba-Rusinov态的不同维度拓扑超导的统一理论框架, 并通过简单的特例加以解释. 这里的理论是理解多个相关实验的基础. Yu-Shiba-Rusinov states are subgap bound states induced by magnetic impurity atoms in a superconductor. These states can be used as building blocks in constructing an effective topological …

2022年10月27日 · Studies of single-spin objects are essential for designing emergent quantum states. We investigate a molecular magnet Tb 2 Pc 3 interacting with a superconducting Pb (111) substrate, which hosts...

2021年5月21日 · Theoretical descriptions of Yu-Shiba-Rusinov (YSR) states induced by magnetic impurities inside the gap of a superconductor typically rely on a classical spin model or are restricted to spin-$\frac{1}{2}$ quantum spins.

2023年8月17日 · Some YSR states move across the quantum phase transition (QPT) due to the changes in atomic forces during tip approach, yielding a continuous universal scaling with quantitative precision for...

2021年1月12日 · We find that the impurity state is of the Yu-Shiba-Rusinov (YSR) type, and argue that the energy shift is caused by the low superfluid density in FeTe 0.55 Se 0.45, which allows the electric...

2021年9月30日 · A Yu-Shiba-Rusinov (YSR) state is a localized in-gap state induced by a magnetic impurity in a superconductor. Recent experiments used an STM tip to manipulate the exchange coupling between an Fe...

2022年6月10日 · A Yu-Shiba-Rusinov (YSR) state is a localized in-gap state induced by a magnetic impurity in a superconductor. Recent experiments used an STM tip to manipulate the exchange coupling between an Fe adatom and the FeTe_{0.55}Se_{0.45} superconductor possessing a Z_{2} nontrivial band structure with top …

2021年2月18日 · Yu-Shiba-Rusinov (YSR) bound states appear when a magnetic atom interacts with a superconductor. Here, we report on spin-resolved spectroscopic studies of YSR states related with Fe atoms deposited on the surface of the topological superconductor using a spin-polarized scanning tunneling microscope.