scholarly journals Magnetic-field-induced binding of few-electron systems in shallow quantum dots

2006 ◽  
Vol 74 (11) ◽  
Author(s):  
B. Szafran ◽  
S. Bednarek ◽  
F. M. Peeters
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Electron Systems

scholarly journals Magnetocaloric Effect in Non-Interactive Electron Systems: “The Landau Problem” and Its Extension to Quantum Dots

Entropy ◽  
2018 ◽  
Vol 20 (8) ◽  
pp. 557 ◽  
Author(s):  
Oscar Negrete ◽  
Francisco Peña ◽  
Juan Florez ◽  
Patricio Vargas
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Magnetocaloric Effect ◽  
Cyclotron Frequency ◽  
The Other ◽  
Electron Systems ◽  
Optimal Region ◽  
Potential Trap ◽  
Parabolic Confinement ◽  
Parabolic Confinement Potential

In this work, we report the magnetocaloric effect (MCE) in two systems of non-interactive particles: the first corresponds to the Landau problem case and the second the case of an electron in a quantum dot subjected to a parabolic confinement potential. In the first scenario, we realize that the effect is totally different from what happens when the degeneracy of a single electron confined in a magnetic field is not taken into account. In particular, when the degeneracy of the system is negligible, the magnetocaloric effect cools the system, while in the other case, when the degeneracy is strong, the system heats up. For the second case, we study the competition between the characteristic frequency of the potential trap and the cyclotron frequency to find the optimal region that maximizes the ΔT of the magnetocaloric effect, and due to the strong degeneracy of this problem, the results are in coherence with those obtained for the Landau problem. Finally, we consider the case of a transition from a normal MCE to an inverse one and back to normal as a function of temperature. This is due to the competition between the diamagnetic and paramagnetic response when the electron spin in the formulation is included.

Thermoelectric Power in Quantum Confined Bismuth Under Classically Large Magnetic Field

1990 ◽  
Vol 216 ◽  
Author(s):  
Kamakhya P. Ghatak ◽  
S. N. Biswas
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Quantum Well ◽  
Film Thickness ◽  
Quantum Wells ◽  
Thermoelectric Power ◽  
Large Magnetic Field ◽  
Quantum Well Wires ◽  
Electron Dispersion ◽  
Theoretical Results

ABSTRACTIn this paper we studied the thermoelectric power under classically large magnetic field (TPM) in quantum wells (QWs), quantum well wires (QWWS) and quantum dots (QDs) of Bi by formulating the respective electron dispersion laws. The TPM increases with increasing film thickness in an oscillatory manner in all the cases. The TPM in QD is greatest and the least for quantum wells respectively. The theoretical results are in agreement with the experimental observations as reported elsewhere.

Effects of magnetic field on multi-excitonic structures in GaAs quantum dots

2006 ◽  
Vol 119-120 ◽  
pp. 565-569 ◽  
Author(s):  
F. Saito ◽  
M. Yamagiwa ◽  
K. Ikeda ◽  
Y. Ogawa ◽  
F. Minami ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots

scholarly journals Fine structure and spin quantum beats in InP quantum dots in a magnetic field

2002 ◽  
Vol 66 (23) ◽  
Author(s):  
I. A. Yugova ◽  
I. Ya. Gerlovin ◽  
V. G. Davydov ◽  
I. V. Ignatiev ◽  
I. E. Kozin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Fine Structure ◽  
Quantum Beats ◽  
Spin Quantum ◽  
Inp Quantum Dots
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