Magnetic field dependence of quantum dot ground states

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• 作者：F. Cavaliere ; U. De Giovannini ; R. Cenni ; M. Sassetti ; B. Kramer
• 关键词：Quantum dots ; Hartree fock ; Spin ; Spin blockade
• 刊名：Physica E
• 出版年：2008
• 出版时间：March 2008
• 年：2008
• 卷：40
• 期：5
• 页码：1427-1429
• 全文大小：155 K

文摘

We study the ground states of a planar quantum dot with PF6GJ-D&_mathId=mml18&_user=1067359&_cdi=6159&_rdoc=156&_acct=C000050221&_version=1&_userid=10&md5=8f30166eef55772598dba36a6a930db1"" title=""Click to view the MathML source"" alt=""Click to view the MathML source"">N=5,6,7 electrons, in the presence of a perpendicular magnetic field. Using a spatially unrestricted Hartree Fock technique followed by spin and angular momentum symmetry restoration, chemical potentials are calculated and transitions between different ground states are identified. A spin blockade in the fcb8d2db0fbfd0a80baf8e8"" title=""Click to view the MathML source"" alt=""Click to view the MathML source"">6→7 transition is found. The structure of the quantum dot wave functions is illustrated by their electron densities.