Quantum thermoelectric and heat transport in the overscreened Kondo regime: Exact conformal field theory results
arXiv:2008.03223 · doi:10.1103/PhysRevB.102.241402
Abstract
We develop a conformal-field theory approach for investigation of the quantum charge-, heat- and thermoelectric- transport through a quantum impurity fine tuned to a non-Fermi liquid regime. The non-Fermi-liquid operational mode is associated with the overscreened spin Kondo effect and controlled by the number of orbital channels. The universal low-temperature scaling and critical exponents for Seebeck and Peltier coefficients are investigated for the multichannel geometry. We derive and analyze the universal dependence of the thermoelectric coefficients on the number of orbital channels. We discuss the universality of Lorenz ratio and power factor beyond the Fermi Liquid paradigm. Different methods of verifying our findings based on the recent experiments are proposed.
arXiv comment6 pages with a figure: published version (PRB Rapid communication)
References in corpus (42)
- Kondo Physics in a Single Electron Transistor
- Bosonization and Strongly Correlated Systems
- Fundamental aspects of steady-state conversion of heat to work at the nanoscale
- Observation of the two-channel Kondo effect
- Coulomb blockade at almost perfect transmission
- Most efficient quantum thermoelectric at finite power output
- Quantum limit of heat flow across a single electronic channel
- Thermopower of a Kondo-correlated quantum dot
- Thermoelectric transport through strongly correlated quantum dots
- Topological Kondo effect with Majorana fermions
- Overscreened multi-channel SU(N) Kondo model : large-N solution and Conformal Field Theory
- Two-channel Kondo effect and renormalization flow with macroscopic quantum charge states
- Towards full counting statistics for the Anderson impurity model
- Tunable Quantum Criticality and Super-ballistic Transport in a `Charge' Kondo Circuit
- Multi-Terminal Coulomb-Majorana Junction
- Observation of the Kondo Screening Cloud of Micron Lengths
- Majorana-Klein hybridization in topological superconductor junctions
- Majorana Fermions, Exact Mapping between Quantum Impurity Fixed Points with four bulk Fermion species, and Solution of the ``Unitarity Puzzle''
- Quantum phase transition in a two-channel-Kondo quantum dot device
- How to measure the entropy of a mesoscopic system via thermoelectric transport
- Multi-channel Kondo impurity dynamics in a Majorana device
- The Screening Cloud in the k-Channel Kondo Model: Perturbative and Large-k Results
- Direct measurement of the Seebeck coefficient in a Kondo-correlated single-quantum-dot transistor
- Quantum brownian motion on a triangular lattice and c=2 boundary conformal field theory
- Detecting the universal fractional entropy of Majorana zero modes
- Universal low-temperature crossover in two-channel Kondo models
- Thermoelectric characterization of the Kondo resonance in nanowire quantum dots
- Conductance fingerprint of Majorana fermions in the topological Kondo effect
- Anyons in Multichannel Kondo Systems
- Charge Fractionalization in a Kondo Device
- Wiedemann-Franz law in a non-Fermi liquid and Majorana central charge: Thermoelectric transport in a two-channel Kondo system
- Impurity entanglement entropy in Kondo systems from conformal field theory
- Thermoelectric Transport in a Three-Channel Charge Kondo Circuit
- Exact nonequilibrium transport in the topological Kondo effect
- Dynamical conductance in the two-channel Kondo regime of a double dot system
- Thermoelectric Transport through SU(N) Kondo Impurity
- Nonlinear Seebeck effect of SU() Kondo impurity
- Equilibrium Fermi-liquid coefficients for the fully screened N-channel Kondo model
- Spin thermopower in the overscreened Kondo model
- Signatures of topological ground state degeneracy in Majorana islands
- The thermal conductance of a two-channel Kondo model
- Effects of strong electron interactions and resonance scattering on power output of nano-devices
Cited by in corpus (10)
- Violation of the Wiedemann-Franz law in the Topological Kondo model
- SO(5) non-Fermi liquid in a Coulomb box device
- Multi-particle scattering and breakdown of the Wiedemann-Franz law at a junction of N interacting quantum wires
- Generalized Wiedemann-Franz law in a two-site charge Kondo circuit: Lorenz ratio as a manifestation of the orthogonality catastrophe
- Coulomb blockade oscillations of heat conductance in the charge Kondo regime
- Quantum thermal transport in the charged Sachdev-Ye-Kitaev model: Thermoelectric Coulomb blockade
- Transmission phase evolution in fully screened and overscreened Kondo impurities
- Overscreened Kondo problem with large spin and large number of orbital channels: Two distinct semiclassical limits in quantum transport observables
- Noise signatures of a charged Sachdev-Ye-Kitaev dot in mesoscopic transport
- Open harmonic chain without secular approximation