Department of Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik, Iceland.
Department of Theoretical Physics, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
Nanotechnology. 2023 Jun 6;34(34). doi: 10.1088/1361-6528/acd6a5.
Flux-periodic oscillations of the superconducting gap in proximitized core-shell nanowires are explored. Periodicity of oscillations in the energy spectrum of a cylindrical nanowire is compared with nanowires having hexagonal and square cross-section geometry, along with the effects of Zeeman and Rashba spin-orbit interaction. A transition between/and/2periodicity is found and shown to be dependent on the chemical potential, with correspondence to degeneracy points of the angular momentum quantum number. For a thin shell of a square nanowire, solely/periodicity is found in the infinite wire spectrum and shown to result from energy separation between the lowest groups of excited states.
研究了近邻化核壳纳米线中超导能隙的通量周期性振荡。比较了圆柱形纳米线与具有六边形和正方形横截面几何形状的纳米线的能谱中的振荡周期性，以及塞曼和拉什巴自旋轨道相互作用的影响。发现了/和/2周期性之间的转变，并表明该转变依赖于化学势，与角动量量子数的简并点相对应。对于正方形纳米线的薄壳，在无限长纳米线的能谱中仅发现/周期性，这是由最低激发态组之间的能量分离引起的。
