plt.title('Yu-Shiba-Rusinov States Energy Spectrum') plt.legend() plt.grid(True) plt.show()if __name__ == "__main__": main()说明参数设置:设置了超导能隙delta、超导配对能量t、杂质的局域能量U和杂质的自旋-电子耦合常数J。构建哈密顿量矩阵:construct_hamiltonian函数构建了一个简单的二维哈密顿...
The energy of the phase-dependent YSR states depend on the gate voltage and one state can cross zero energy twice inside the valley with odd occupancy. These crossings are shifted by the phase difference towards the charge degeneracy points, corresponding to larger exchange couplings. Moreover, ...
topology, Yu–Shiba–Rusinov statesWhen magnetic atoms are inserted inside a superconductor, the superconducting order is locally depleted as a result of the antagonistic nature of magnetism and superconductivity1. Thereby, distinctive spectral features, known as Yu-Shiba-Rusinov states, appear inside ...
Tuning Yu-Shiba-Rusinov States in a Quantum Dot We present transport spectroscopy of subgap states in a bottom gated InAs nanowire coupled to a normal lead and a superconducting aluminium lead. The device shows clearly resolved subgap states which we can track as the coupling paramete... A ...
The coupling of these subgap states via a SC strongly depends on their spatial extension and is an essential next step for future quantum technologies. Here we investigate the spatial extension of a Shiba state in a semiconductor quantum dot coupled to a SC for the first time. With detailed ...
Magnetic atoms coupled to the Cooper pairs of a superconductor induce Yu-Shiba-Rusinov states (in short Shiba states). In the presence of sufficiently strong spin-orbit coupling, the bands formed by hybridization of the Shiba states in ensembles of such atoms can support low-dimensional topological...
• Yu–Shiba–Rusinov states induced in an A15-compound superconductor. • Dependence of intragap states on the adsorption site of the single-atom magnetic impurity. • Three-dimensional character of scattering unveiled by strong damping of the spectral weight in spatially resolved spectroscopy. ...
Yu-Shiba-Rusinov states and topological superconductivity in Ising paired superconductorsGirish SharmaSumanta TewariAmerican Physical Society
Moreover, when J is further increased, the system undergoes a first-order phase transition with the appearance of stable and metastable states, reflecting the presence of the hysteresis loop in the pertinent quantities. As a consequence of this transition, the minimal energy of the stable YSR ...
topology, Yu–Shiba–Rusinov statesGraphene is made superconducting with Pb islands by Iván Brihuega and co-workers, as detailed in article number 2008113. At the same time, magnetic moments are introduced using naturally existing graphene grain boundaries. They show that both superconductivity and ...