Thermal bias induced charge current in a Josephson junction: From ballistic to disordered

Electrically controllable thermal transport in Josephson junctions based on buckled two-dimensional materials

“…Since the quasiparticle transmission probabilities are profoundly influenced by the band gaps, the phase dependence of thermal conductance can be controlled by the perpendicular electric field. We note that the electrical tunability of the phase-coherent thermal conductance originates from the unique buckled sublattice structures of BTDMs and is absent in similar conventional [11,12,[23][24][25][26] and topological Josephson junctions [9,10,[13][14][15][16][17][18][19][20][21]. In addition, the configurations of φ-dependent thermal conductance strongly depend on the type of exchange field and the chemical potential µ M .…”

“…In doing so, the superconducting gap can be effectively modeled by a step function, In the present work, we study the thermal transport properties by virtue of the scattering wave approach. This method has been extensively employed to investigate the thermal transport properties in temperaturebiased superconducting hybrid structures [9][10][11][12][13][14][15][16][17][18][19][20][21][22]27]. Compared with the approaches of tunneling Hamiltonian and Usadel equation in quasiclassical approximation, the scattering wave method possesses the advantages to explore the thermal transport properties in a single-or a few-channel superconducting hybrid structures with arbitrary transparency [12].…”

“…Therefore, we only concentrate on thermal conductance contributed by electron-like and hole-like quasiparticles and neglect the contribution from phonons. Taking advantage of the transmission probability T ησ (ǫ, θ), the heat current can be written as [9][10][11][12][13][14][15][16][17][18][19][20][21][22]27]…”

“…The thermal transport in temperature-biased Josephson junctions has recently garnered considerable attention, due to the extensive applications ranging from phase-coherent caloritronics [1][2][3][4][5][6][7][8][9][10][11][12][13] to the detection of novel quantum states [14][15][16][17][18][19][20][21][22]. In Josephson junctions, the formation of Andreev-bound states (ABSs) has a profound impact on the quasiparticle scattering.…”

“…Although significant achievements have been made in the thermal transport properties of Josephson junctions, the research attention to date has mainly been restricted to the phase-coherent aspect of thermal transport [2][3][4][5][6][7][8][9][10][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. In practice, the manipulation of the proposed phase dependence needs to resort to an external magnetic field [2][3][4][5][6].…”