Tunable spin Seebeck effect in a double Rashba molecule embedded in an Aharonov–Bohm interferometer

Spin-Seebeck effect and spin polarization in a multiple quantum dot molecule

“…23 On the other hand, the presence of a magnetic field or ferromagnetic leads is necessary for the thermoelectric response of the system becomes spin polarized. Pure spin Seebeck coefficients have been found for diverse setups, in where closed Aharonov-Bohm ring is one of the most studied, such as for Rashba QD molecules rings, 24,25 for a degenerated molecular QD in a ring, 26 and for a mesoscopic ring in the presence of both Rashba and Dresselhaus spin-orbit interactions. 27 Coulomb correlation in a single QD in the presence of metal and magnetic insulator leads, has also been proved to tune and enhance the SSE, leading to an efficient thermovoltaic transistor.…”

“…29 A similar effect, the so-called spin-current Seebeck effect, which is the charge voltage generation by a spin current, has been studied in graphene 30 and a single QD with electron-electron Coulomb interaction. 31,32 While most of the studies in QDs have focused in closed geometries such Aharonov-Bohm interferometers, [24][25][26] or single QDs in the presence of ferromagnetic leads, 29,33 only a few have focused on the generation of spin currents of nonclosed systems in the presence of metallic leads, systems such single QDs 34 or lateral groups of multiple-QDs. A setup for the latter has been recently growth experimentally and an excitonic electrons attraction mediated by Coulomb repulsion was reported and schematized with a lateral group of multiple-QDs model.…”

“…Previously, we studied a closed setup of a Rashba quantum dot molecule embedded in an Aharonov-Bohm interferometer, and we showed that SSE could be achieved, in the presence of normal metallic leads, by only suitable tuning the different phases. 25 Later, we studied an open setup of a multi-QD system attached laterally to the conduction channel, or namely a side-QD molecule, for which we showed it could exhibit bound states in the continuum (BIC) and Fano effect in the absence of electron-electron interaction. 38 In the present work, we study the creation of a pure SSE in the side-QD-molecule system connected to metallic leads, and the Fano effect role on the thermoelectric properties.…”