Work

Phase-dependent Andreev bound states and thermal transport in ferromagnetic-graphene Josephson junctions

Year: 2026

Type: article

Abstract: We theoretically investigate the phase-dependent properties of Andreev bound states and thermal transport in graphene-based superconducting–ferromagnetic–superconducting (SFS) Josephson junctions. Our results demonstrate that the spin-split Andreev bound states can be effectively modulated—opening and closing—by varying the strength of the ferromagnetic exchange field. The total thermal conductance of the junction is highly sensitive to changes in the exchange field. Furthermore, the thermal conductance at phase differences of ϕ=0 and ϕ=π exhibits pronounced oscillatory behavior as a function of both the exchange field and the junction length, alternating between distinct peaks and valleys. These findings indicate that SFS Josephson junctions based on graphene provide a promising platform for achieving controllable phase-coherent thermal transport.

Source: Journal of Applied Physics

DOI: 10.1063/5.0313298

Authors: Haining Yang, Qingping Wu, Zhengfang Liu, Xianbo Xiao

Institutions: East China Jiaotong University, Jiangxi University of Traditional Chinese Medicine

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: National Natural Science Foundation of China, Natural Science Foundation of Jiangxi Province