Zobrazeno 1 - 10
of 57
pro vyhledávání: '"BULKA, B. R."'
Publikováno v:
Nonlinear Optics, Quantum Optics: Concepts in Modern Optics. 2023, Vol. 58 Issue 3/4, p191-202. 12p.
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures, 75 (2016) 345
A system of three coupled quantum dots in a triangular geometry (TQD) with electron-electron interaction and symmetrically coupled to two leads is analyzed with respect to the electron transport by means of the numerical renormalization group. Varyin
Externí odkaz:
http://arxiv.org/abs/1511.01235
Publikováno v:
Scientific Reports 5, 14572 (2015)
We predict strong non-local effects in the three-terminal hybrid device, comprising the quantum dot embedded between two conducting leads and third superconducting reservoir. They result from competition between the ballistic electron transfer and th
Externí odkaz:
http://arxiv.org/abs/1505.07275
Publikováno v:
New J. Phys. 16, 055001 (2014)
We investigate the electrical conductance and thermopower of a quantum dot tunnel coupled to external leads described by an extension of the Anderson impurity model which takes into account the assisted hopping processes, i.e., the occupancy-dependen
Externí odkaz:
http://arxiv.org/abs/1401.1132
Publikováno v:
Eur. Phys. J. B (2013) 86: 505
We present studies of thermal entanglement of a three-spin system in triangular symmetry. Spin correlations are described within an effective Heisenberg Hamiltonian, derived from the Hubbard Hamiltonian, with super-exchange couplings modulated by an
Externí odkaz:
http://arxiv.org/abs/1311.3945
We consider a triple quantum dot system in a triangular geometry with one of the dots connected to metallic leads. Using Wilson's numerical renormalization group method, we investigate quantum entanglement and its relation to the thermodynamic and tr
Externí odkaz:
http://arxiv.org/abs/1303.6577
We present studies of ballistic transport in three terminal T-shaped junction in a linear and non-linear regime. The floating electrode acts as a scatterer and modifies the conductance in a direct channel (between source and drain electrode). In the
Externí odkaz:
http://arxiv.org/abs/1112.6264
Autor:
Wrobel, J., Zagrajek, P., Czapkiewicz, M., Bek, M., Sztenkiel, D., Fronc, K., Hey, R., Ploog, K. H., Bulka, B. R.
We report low-temperature transport measurements of three-terminal T-shaped device patterned from GaAs/AlGaAs heterostructure. We demonstrate the mode branching and bend resistance effects predicted by numerical modeling for linear conductance data.
Externí odkaz:
http://arxiv.org/abs/0912.2004
Publikováno v:
Journal of Optoelectronics and Advanced Materials, Vol.10, No.7 (2008), p.1754
We analyze the electronic transport through a quantum dot that contains a magnetic impurity. The coherent transport of electrons is governed by the quantum confinement inside the dot, but is also influenced by the exchange interaction with the impuri
Externí odkaz:
http://arxiv.org/abs/0807.3425
Electron tunneling in ferromagnetic single-electron transistors is considered theoretically in the sequential tunneling regime. A new formalism is developed, which operates in a two-dimensional space of states, instead of one-dimensiona space used in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010256