Zeeman-Effect-Induced 0−π Transitions in Ballistic Dirac Semimetal Josephson Junctions
Chuan Li, Bob de Ronde, Jorrit de Boer, Joost Ridderbos, Floris Zwanenburg, Yingkai Huang, Alexander Golubov, Alexander Brinkman
DOI 10.1103/PhysRevLett.123.026802 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
One of the consequences of Cooper pairs having a finite momentum in the interlayer of a Josephson junction is π-junction behavior. The finite momentum can either be due to an exchange field in ferromagnetic Josephson junctions, or due to the Zeeman effect. Here, we report the observation of Zeeman-effect-induced 0−π transitions in Bi1−xSbx, three-dimensional Dirac semimetal-based Josephson junctions. The large in-plane g factor allows tuning of the Josephson junctions from 0 to π regimes. This is revealed by measuring a π phase shift in the current-phase relation measured with an asymmetric superconducting quantum interference device (SQUID). Additionally, we directly measure a nonsinusoidal current-phase relation in the asymmetric SQUID, consistent with models for ballistic Josephson transport.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi0.97Sb0.03 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.5 | Pressure not reported | onset |
Similar papers
Charge transport through ultrasmall single and double Josephson junctions coupled to resonant modes of the electromagnetic environment
similarity 0.95Yu. A. Pashkin et al.
Source status unknown — claims are unverified
Nonadiabatic dynamics in strongly driven diffusive Josephson junctions
similarity 0.95J. Basset et al.
Source status unknown — claims are unverified
Phase Transition and Critical Dynamics in Site-Diluted Josephson-Junction Arrays
similarity 0.95Young-Je Yun et al.
Source status unknown — claims are unverified
Tuning of phase diffusion in small Josephson junctions by magnetic field
similarity 0.95Y. Koval et al.
Source status unknown — claims are unverified
Magnetic interference patterns in 0−π superconductor/insulator/ferromagnet/superconductor Josephson junctions: Effects of asymmetry between 0 and π regions
similarity 0.94M. Kemmler et al.
Source status unknown — claims are unverified
Superconducting transition of a two-dimensional Josephson junction array in weak magnetic fields
similarity 0.94In-Cheol Baek et al.
Source status unknown — claims are unverified