Local and nonlocal shot noise in high-T superconducting nanowires

Abstract

We obtain exact expressions for the local current and shot noise and the nonlocal shot noise in the first propagating channel of an NSN (normal-superconducting-normal) nanowire. Using high-T c cuprate superconductors (HTS) as our model systems we utilize a scattering theory approach to derive the scattering matrix for the systems in the high transparency limit and without the Andreev approximation. The local current and shot noise spectrum is calculated and plotted. In view of recent work in the area of cooper-pair splitting (CPS) devices, we investigate the nonlocal shot noise and relate the behavior of the noise as we change parameters such as the system size, the orientation of the order parameter and the biasing of the junction in the HTS NSN system. arXiv:1901.03766v1 [cond-mat.supr-con]

Fabrication and electrical transport characterization of high quality underdoped YBa2Cu3O7-δ nanowires

“…It is by now well established that the complex phase diagram of HTS is dominated by various local electronic orders that are intertwined with superconductivity and become stronger in the underdoped region of the phase diagram [1]. All recent activities on HTS nanowires are focused on optimal doping [2][3][4][5][6][7][8][9][10]. The realization of underdoped nanowires with dimensions comparable to the relevant length scales of the Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.…”