TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.8.1.031
TI  - Phase transitions in quantum dot-Majorana zero mode coupling systems
PY  - 2025/03/11
UR  - https://scipost.org/SciPostPhysCore.8.1.031
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 8
IS  - 1
SP  - 031
A1  - Mao, Yue
AU  - Sun, Qing-Feng
AB  - The magnetic doublet ground state (GS) of a quantum dot (QD) could be changed to a spin-singlet GS by coupling to a superconductor. In analogy, here we study the GS phase transitions in QD-Majorana zero mode (MZM) coupling systems: GS behaves phase transition versus intra-dot energy level and QD-MZM coupling strength. The phase diagrams of GS are obtained, for cases with and without Zeeman term. Along with the phase transition, we also study the change of spin feature and density of states. The properties of the phase transition are understood via a mean-field picture. Our study not only serves as an analogue to QD-superconductor phase transitions, but also gives alternative explanations on MZM-relevant experiments.
ER  -

@Article{10.21468/SciPostPhysCore.8.1.031,
	title={{Phase transitions in quantum dot-Majorana zero mode coupling systems}},
	author={Yue Mao and Qing-Feng Sun},
	journal={SciPost Phys. Core},
	volume={8},
	pages={031},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.8.1.031},
	url={https://scipost.org/10.21468/SciPostPhysCore.8.1.031},
}