General information about the project
The rapid progress in miniaturization of electronic devices inevitably brings the current technology closer to a certain natural limit, when the manipulation of individual molecules, atoms or spins will constitute the basis for processing and storing information. Regardless of how distant this perspective seems to be, comprehensive understanding of physics at the nanoscale will certainly be of vital importance. The theoretical studies of transport properties of nanoscale systems, such as molecules, quantum dots or nanowires, due to strong electron correlations, are very demanding and the methods used are very often based on a series of approximations. Consequently, there are relatively few results that can be considered as benchmarks, and which can be directly compared to experiments. The aim of this project is to provide very accurate results and new predictions for problems that have not been studied yet. One of such open problems is undoubtedly the accurate quantitative calculation of transport characteristics in non-equilibrium conditions and the determination of dynamics with exact treatment of correlations. Therefore, the main goal of this project is to develop and adapt advanced numerical methods based on renormalization group techniques to study transport properties of correlated nanoscale systems, with particular emphasis on non-equilibrium and dynamical phenomena.
Realization period: 01.10.2018 - 31.05.2023
Research team:
Faculty of Physics, Adam Mickiewicz University, Poznań, Poland
Prof. Ireneusz Weymann (PI)
Dr. Piotr Trocha, Dr. Kacper Wrześniewski, Dr. Piotr Busz, Dr. Tomasz Ślusarski, M.Sc. Filip Pawlicki, M.Sc. Anand Manaparambil, M.Sc. Patrycja Tulewicz.
List of publications
Spin-resolved nonequilibrium thermopower of asymmetric nanojunctions
Phys. Rev. B 109, 115402 (2024)
Giant tunnel magnetoresistance induced by thermal bias
J. Magn. Magn. Mater. 587, 171272 (2023)
Nonmonotonic buildup of spin-singlet correlations in a double quantum dot
Phys. Rev. B 108, 144307 (2023)
Dynamics of Superconducting Correlations Induced by Hopping in Serial Double Quantum Dot System
Acta Phys. Pol. A 143, 160 (2023)
Nonequilibrium Seebeck effect and thermoelectric efficiency of Kondo-correlated molecular junctions
Phys. Rev. B 107, 085404 (2023)
Nonequilibrium spintronic transport through Kondo impurities
Phys. Rev. B 106, 125413 (2022)
Numerical renormalization group study of the Loschmidt echo in Kondo systems
Sci. Rep. 12, 9799 (2022)
Dynamical quantum phase transitions in a mesoscopic superconducting system
Phys. Rev. B 105, 094514 (2022)
Spin-polarized transport in quadruple quantum dots attached to ferromagnetic leads
J. Magn. Magn. Mater. 546, 168835 (2022)
Kondo effect in the presence of the spin accumulation and non-equilibrium spin currents
J. Magn. Magn. Mater. 542, 168592 (2022)
Spintronic transport through a double quantum dot-based spin valve with noncollinear magnetizations
J. Magn. Magn. Mater. 546, 168788 (2022)
Kondo Cloud in a Superconductor
Phys. Rev. Lett. 127, 186804 (2021)
Spin-current Kondo effect: Kondo effect in the presence of spin accumulation
Phys. Rev. B 104, 125108 (2021)
Large Voltage-Tunable Spin Valve Based on a Double Quantum Dot
Phys. Rev. App. 16, 014029 (2021)
Transient effects in a double quantum dot sandwiched laterally between superconducting and metallic leads
Phys. Rev. B 103, 165430 (2021)
Spin Seebeck effect of correlated magnetic molecules
Sci. Rep. 11, 9192 (2021)
Quench dynamics of a correlated quantum dot sandwiched between normal-metal and superconducting leads
Phys. Rev. B 103, 155420 (2021)
Magnetization dynamics in a Majorana-wire-quantum-dot setup
Phys. Rev. B 103, 125413 (2021)
Spectral properties of a Co-decorated quasi-two-dimensional GaSe layer
Phys. Rev. B 102, 075309 (2020)
Magnetic Kondo regimes in a frustrated half-filled trimer
Phys. Rev. B 102, 045144 (2020)
Time-dependent spintronic anisotropy in magnetic molecules
Phys. Rev. B 101, 245434 (2020)
Current cross-correlations and waiting time distributions in Andreev transport through Cooper pair splitters based on a triple quantum dot system
Phys. Rev. B 101, 155409 (2020)
Detection of Spin Reversal via Kondo Correlation in Hybrid Carbon Nanotube Quantum Dots
ACS Nano 13, 10029 (2019)
Quench dynamics of spin in quantum dots coupled to spin-polarized leads
Phys. Rev. B 100, 035404 (2019)
Giant superconducting proximity effect on spintronic anisotropy
Phys. Rev. B 100, 045401 (2019)
Cross-Correlations in Transport through a Quantum Dot Cooper Pair Splitter Asymmetrically Coupled to Normal Leads
Acta Phys. Pol. A 135, 1279 (2019)
Magnetoresistive properties of a double magnetic molecule spin valve in different geometrical arrangements
J. Magn. Magn. Mater. 480, 11 (2019)