Ground-State Properties of an Artificial Molecule: a Simple Model Calculation for the Double Quantum Dot

Chin. Phys. Lett.

1999, Vol. 16

Issue (8): 594-596 DOI:

Original Articles

Ground-State Properties of an Artificial Molecule: a Simple Model Calculation for the Double Quantum Dot

YOU Jian-qiang;ZHENG Hou-zhi

National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083

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YOU Jian-qiang, ZHENG Hou-zhi 1999 Chin. Phys. Lett. 16 594-596

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Abstract The ground state of a double quantum-dot structure is studied by a simplified Anderson-type model. Numerical calculations reveal that the ground-state 1evel of this artificial molecule increases with the increasing single particle level of the dot, and also increases with the decreasing transfer integrals. We show the staircase feature of the electron occupation and the properties of the ground-state eigenvector by varying the single particle level of the dot.

Keywords: 73.20.Dx 73.40.Gk

Published: 01 August 1999

PACS:	73.20.Dx
	73.40.Gk	(Tunneling)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I8/0594

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