scholarly journals Coulomb effects on the transport properties of quantum dots in a strong magnetic field

2000 ◽  
Vol 63 (4) ◽  
Author(s):  
V. Moldoveanu ◽  
A. Aldea ◽  
A. Manolescu ◽  
M. Niţă
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Transport Properties ◽  
Strong Magnetic Field ◽  
Coulomb Effects

Photoluminescence spectroscopy of self-assembled InAs quantum dots in strong magnetic field and under high pressure

1997 ◽  
Vol 70 (4) ◽  
pp. 505-507 ◽  
Author(s):  
I. E. Itskevich ◽  
M. Henini ◽  
H. A. Carmona ◽  
L. Eaves ◽  
P. C. Main ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
High Pressure ◽  
Strong Magnetic Field ◽  
Photoluminescence Spectroscopy ◽  
Inas Quantum Dots ◽  
Self Assembled

scholarly journals Effect of magnetic field on the charge and thermal transport properties of hot and dense QCD matter

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
Shubhalaxmi Rath ◽  
Binoy Krishna Patra
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Transport Properties ◽  
Strong Magnetic Field ◽  
Knudsen Number ◽  
Thermal Transport ◽  
Isotropic Medium ◽  
Chemical Potential ◽  
Lorenz Number

Abstract We have studied the effect of strong magnetic field on the charge and thermal transport properties of hot QCD matter at finite chemical potential. For this purpose, we have calculated the electrical conductivity ($$\sigma _\mathrm{el}$$σel) and the thermal conductivity ($$\kappa $$κ) using kinetic theory in the relaxation time approximation, where the interactions are subsumed through the distribution functions within the quasiparticle model at finite temperature, strong magnetic field and finite chemical potential. This study helps to understand the impacts of strong magnetic field and chemical potential on the local equilibrium by the Knudsen number ($$\Omega $$Ω) through $$\kappa $$κ and on the relative behavior between thermal conductivity and electrical conductivity through the Lorenz number (L) in the Wiedemann–Franz law. We have observed that, both $$\sigma _\mathrm{el}$$σel and $$\kappa $$κ get increased in the presence of strong magnetic field, and the additional presence of chemical potential further increases their magnitudes, where $$\sigma _\mathrm{el}$$σel shows decreasing trend with the temperature, opposite to its increasing behavior in the isotropic medium, whereas $$\kappa $$κ increases slowly with the temperature, contrary to its fast increase in the isotropic medium. The variation in $$\kappa $$κ explains the decrease of the Knudsen number with the increase of the temperature. However, in the presence of strong magnetic field and finite chemical potential, $$\Omega $$Ω gets enhanced and approaches unity, thus, the system may move slightly away from the equilibrium state. The Lorenz number ($$\kappa /(\sigma _\mathrm{el} T))$$κ/(σelT)) in the abovementioned regime of strong magnetic field and finite chemical potential shows linear enhancement with the temperature and has smaller magnitude than the isotropic one, thus, it describes the violation of the Wiedemann–Franz law for the hot and dense QCD matter in the presence of a strong magnetic field.

Transport Properties of Plasmas in a Strong Magnetic Field

1960 ◽  
Vol 15 (6) ◽  
pp. 1101-1107 ◽  
Author(s):  
Taro Kihara ◽  
Yukio Midzuno ◽  
Shobu Kaneko
Keyword(s):  
Magnetic Field ◽  
Transport Properties ◽  
Strong Magnetic Field

Rules for Identifying the Magic Angular Momenta of Quantum Dots in a Strong Magnetic Field

2000 ◽  
Vol 17 (10) ◽  
pp. 752-754
Author(s):  
Ruan Wen-Ying ◽  
Oi Quan ◽  
Chen Guo-Sen ◽  
He Hao-Pei ◽  
Pan Yu-Bin
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Strong Magnetic Field ◽  
Angular Momenta

NUMERICAL STUDY OF TRANSPORT PROPERTIES IN TOPOLOGICAL INSULATOR QUANTUM DOTS UNDER MAGNETIC FIELD

2013 ◽  
Vol 27 (14) ◽  
pp. 1350104 ◽  
Author(s):  
SHENG-NAN ZHANG ◽  
HUA JIANG ◽  
HAIWEN LIU
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Transport Properties ◽  
Topological Insulator ◽  
Numerical Study ◽  
Spin Polarized ◽  
Full Band ◽  
Spin Degeneracy ◽  
Aharonov Bohm ◽  
The Magnetic Field

In this paper, we investigate the transport properties of HgTe / CdTe -based topological insulator quantum dots (TIQDs) under magnetic field. Both disk and square shaped TIQDs are considered and the magneto-conductance are calculated numerically for various magnetic field strength. The magnetic field lifts the spin degeneracy, leading to spin polarized current at given Fermi energy. Meanwhile, the magneto-conductance demonstrates the Aharonov–Bohm (AB) oscillation with a period of one flux quantum [Formula: see text]. Numerical results for AB oscillation features indicate the mismatch between electron (e) and hole (h) doping conditions, which can be attributed to the e–h asymmetry in the full band Hamiltonian. Further, interference effect emerges around bulk and edge energy degenerate points, subsequently suppressing the magneto-conductance in both shaped systems. All these physical characteristics are qualitatively consistent for disk and square shaped TIQDs due to the topological nature of edge modes.

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