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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2008, Volume 88, Issue 10, Pages 786–790
(Mi jetpl293)
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This article is cited in 6 scientific papers (total in 6 papers)
METHODS OF THEORETICAL PHYSICS
Quantum dot version of topological phase: half-integer orbital angular momenta
V. D. Mura, N. B. Narozhnya, A. N. Petrosyana, Yu. E. Lozovikb a Moscow Engineering Physics Institute, Moscow, 115409, Russia
b Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow region, 142190, Russia
Abstract:
We show that there exists a topological phase equal to $\pi$ for circular quantum dots with an odd number of electrons. The non-zero value of the topological phase is explained by axial symmetry and two-dimensionality of the system. Its particular value ($\pi$) is fixed by the Pauli exclusion principle and leads to half-integer values for the eigenvalues of the orbital angular momentum. Our conclusions agree with the experimental results of T. Schmidt et al., Phys. Rev. B 51, 5570 (1995), which can be considered as the first experimental evidence for the existence of the new topological phase and half-integer quantization of the orbital angular momentum in a system of an odd number of electrons in circular quantum dots.
Received: 05.09.2008 Revised: 06.10.2008
Citation:
V. D. Mur, N. B. Narozhny, A. N. Petrosyan, Yu. E. Lozovik, “Quantum dot version of topological phase: half-integer orbital angular momenta”, Pis'ma v Zh. Èksper. Teoret. Fiz., 88:10 (2008), 786–790; JETP Letters, 88:10 (2008), 688–692
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https://www.mathnet.ru/eng/jetpl293 https://www.mathnet.ru/eng/jetpl/v88/i10/p786
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Abstract page: | 276 | Full-text PDF : | 107 | References: | 40 |
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