Effects of correlated hopping on thermoelectric response of a quantum dot strongly coupled to ferromagnetic leads
arXiv:2509.20243 · doi:10.1002/andp.202500236
Abstract
We theoretically investigate the impact of correlated hopping on thermoelectric transport through a quantum dot coupled to ferromagnetic leads. Using the accurate numerical renormalization group method, we analyze the transport characteristics, focusing on the interplay between electronic correlations, spin-dependent transport processes, and thermoelectric response. We calculate the electrical conductance and thermopower as functions of the dot energy level, lead polarization, and the amplitude of correlated hopping. Moreover, we analyze the effect of competing correlations on the Kondo resonance and discuss the asymmetry of conductance peaks under the influence of the exchange field. We demonstrate that the presence of correlated hopping is responsible for asymmetric spin-dependent transport characteristics. Our results provide valuable insight into how correlated hopping affects spin-dependent transport and thermoelectric efficiency in quantum dot systems with ferromagnetic contacts.
References in corpus (33)
- Kondo Physics in a Single Electron Transistor
- A Tunable Kondo Effect in Quantum Dots
- The numerical renormalization group method for quantum impurity systems
- Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
- Fundamental limitations for quantum and nano thermodynamics
- A single-atom heat engine
- Fundamental aspects of steady-state conversion of heat to work at the nanoscale
- How small can thermal machines be? The smallest possible refrigerator
- Kondo effect in quantum dots coupled to ferromagnetic leads
- Thermopower of Single-Molecule Devices
- NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism
- Thermoelectric transport through strongly correlated quantum dots
- Large enhancement of thermoelectric effects in a double quantum dot system due to interference and Coulomb correlation phenomena
- Thermoelectric effects in strongly interacting quantum dot coupled to ferromagnetic leads
- Fano-Kondo interplay in a side-coupled double quantum dot
- Fano-Kondo effect in side-coupled double quantum dots at finite temperatures and the importance of the two-stage Kondo screening
- Thermoelectric effect in molecular junctions: A tool for revealing transport mechanisms
- Universality of the Kondo effect in quantum dots with ferromagnetic leads
- Spin-thermopower in interacting quantum dots
- Beyond heat baths: Generalized resource theories for small-scale thermodynamics
- Direct measurement of the Seebeck coefficient in a Kondo-correlated single-quantum-dot transistor
- Thermally driven quantum refrigerator autonomously resets superconducting qubit
- Single-atom heat machines enabled by energy quantization
- Proximity effect on spin-dependent conductance and thermopower of correlated quantum dots
- Quantum phases of 1D Hubbard models with three- and four-body couplings
- Effect of assisted hopping on thermopower in an interacting quantum dot
- Spin-dependent thermoelectric effects in transport through a nanoscopic junction involving spin impurity
- Magnetic field dependence of the thermopower of Kondo-correlated quantum dots: Comparison with experiment
- Temperature dependence of electronic transport through molecular magnets in the Kondo regime
- Finite-frequency thermoelectric response in strongly correlated quantum dots
- Spin Seebeck effect of correlated magnetic molecules
- Charge and heat transport through quantum dots with local and correlated-hopping interactions
- Influence of assisted hopping interaction on the linear conductance of quantum dot