2014/08/31 by Tomohiro Yokoyama, Yuli V. Nazarov
Physics and Astronomy · #Anisotropy #Condensed matter physics #Current (fluid) #Josephson effect #Magnetic field #Nanowire #Orbit (dynamics) #Physics #Physics of Superconductivity and Magnetism #Pi Josephson junction #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin–orbit interaction #Superconductivity #Topological Materials and Phenomena #Zeeman effect #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1209/0295-5075/108/47009
published as EPL, 108 (2014) 47009 · submitted to EPL. The manuscript has a supplementary note. 5 page with 4 figures + 2 pages with 2 figures
arxiv created 2014/10/14 · openalex publication_date 2014/11/01 · arxiv updated 2014/12/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We develop and study theoretically a minimal model of semiconductor nanowire Josephson junction that incorporates Zeeman and spin-orbit effects. The DC Josephson current is evaluated from the phase-dependent energies of Andreev levels. Upon changing the applied magnetic field, the critical current oscillates manifesting cusps that signal the transition. Without spin-orbit interaction, the oscillations and positions of cusps are regular and do not depend on the direction of the magnetic field. In the presence of spin-orbit interaction, the magnetic-field dependence of the current becomes anisotropic and irregular. We investigate this dependence in detail and show that it may be used to characterize the strength and direction of the spin-orbit interaction in experiments with nanowires.