Ghosh, Manas ; Hazra, Ram Kuntal ; Bhattacharyya, S. P. (2008) Response dynamics of 2-D quantum dots in the presence of time-varying fields: anharmonicity and pulse shape effects Chemical Physics, 345 (1). pp. 103-115. ISSN 0301-0104
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03010...
Related URL: http://dx.doi.org/10.1016/j.chemphys.2008.01.042
Abstract
We explore the pattern of time evolution of different observables in a harmonically confined single carrier 2-D quantum dot when an external time-varying electric field is switched on. A static transverse magnetic field is also present. For given strengths of the confining field, cyclotron frequency, intensity and oscillation frequency of the external field, and pulse shape parameters, the system reveals a long time dynamics that leads to a kind of localization in the unperturbed state space. The presence of cubic anharmonicity in the confining field brings in new features in the dynamics. Frequency dependent linear and non-linear response properties of the dot are analyzed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Artificial Atoms; Configuration Interaction; Confinement Potential; Time-dependent Schrodinger Equation (TDSE); Frequency Dependent Polarizabilities; Pulse Shape Effects; Dynamic Localization |
| ID Code: | 3000 |
| Deposited On: | 09 Oct 2010 10:22 |
| Last Modified: | 20 May 2011 06:08 |
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