TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.11.014
TI  - Josephson effects between the Kitaev ladder superconductors
PY  - 2023/06/06
UR  - https://www.scipost.org/SciPostPhysProc.11.014
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 11
SP  - 014
A1  - Kanehira, Osamu
AU  - Tsuchiura, Hiroki
AB  - The two-leg ladder system consisting of the Kitaev chains is known to exhibit a richer phase diagram than that of the single chain. We theoretically investigate the variety of the Josephson effects between the ladder systems. We consider the Josephson phase difference $\theta$ between these two ladder systems as well as the phase difference $\phi$ between the parallel chains in each ladder system. The total energy of the junction at $T = 0$ is calculated by a numerical diagonalization method as functions of $\theta$, $\phi$, and also a transverse hopping $t_{\perp}$ in the ladders. We find that, by controlling $t_{\perp}$ and $\phi$, the junction exhibits not only the fractional Josephson effect for the phase difference $\theta$, but also the usual 0-junction and even $\pi$-junction properties.
ER  -

@Article{10.21468/SciPostPhysProc.11.014,
	title={{Josephson effects between the Kitaev ladder superconductors}},
	author={Osamu Kanehira and Hiroki Tsuchiura},
	journal={SciPost Phys. Proc.},
	pages={014},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.11.014},
	url={https://scipost.org/10.21468/SciPostPhysProc.11.014},
}