Particle–hole transport in a TBCCO superconducting single-channel NSNSNSN nanowire

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-10-17 DOI:10.1140/epjp/s13360-025-06957-y

F. Estrella, L. E. Reichl

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Abstract

High-temperature superconductors open new avenues for developing nanoscale superconducting circuits with potential applications in quantum information processing. In this study, we focus on the characterization of single-channel ballistic electron wave propagation in composite NSNSNSN nanowires using the high \(T_c\) superconductor TBCCO (\(\text {Tl}_2\text {Ba}_2\text {Ca}_2\text {Cu}_3\text {O}_{10+\delta }\)). These nanowires are designed to preserve the coherence of a superconducting state while maintaining the simplicity of a quasi-one-dimensional system. Our analysis determines the geometric and thermal conditions to build such nanowires. By examining the scattering matrix, we identify conditions under which quasi-bound states significantly influence the transmission and reflection amplitudes, thereby affecting particle and hole propagation. Furthermore, we explore the nearly ergodic scattering behavior at resonant energies, where the scattering system exhibits nearly equal probability for the various scattering outcomes.

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TBCCO超导单通道NSNSNSN纳米线中的粒子空穴输运

高温超导体为开发纳米级超导电路开辟了新的途径，在量子信息处理中具有潜在的应用前景。在这项研究中，我们重点研究了利用\(T_c\)高超导体TBCCO （\(\text {Tl}_2\text {Ba}_2\text {Ca}_2\text {Cu}_3\text {O}_{10+\delta }\)）在复合NSNSNSN纳米线中的单通道弹道电子波传播特性。这些纳米线旨在保持超导状态的相干性，同时保持准一维系统的简单性。我们的分析决定了制造这种纳米线的几何和热条件。通过研究散射矩阵，我们确定了准束缚态显著影响透射和反射振幅的条件，从而影响粒子和空穴的传播。此外，我们探讨了谐振能量下的近遍历散射行为，其中散射系统对各种散射结果表现出几乎相等的概率。

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.