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We demonstrate here that the dipole-allowed optical absorption spectrum of a parabolic quantum dot subjected to an external magnetic field reflects the inter-electron interaction effects when the spin-orbit interaction is also taken into…

介观与纳米尺度物理 · 物理学 2009-11-11 Tapash Chakraborty , Pekka Pietiläinen

We present a theoretical study of the energy levels in a parabolically confined quantum dot in the presence of the Rashba spin-orbit interaction (SOI). The features of some low-lying states in various strengths of the SOI are examined at…

介观与纳米尺度物理 · 物理学 2007-05-23 W. H. Kuan , C. S. Tang , W. Xu

We report on a theoretical approach developed to investigate the influence of Bychkov-Rashba interaction on a few interacting electrons confined in a quantum dot. We note that the spin-orbit coupling profoundly influences the energy…

无序系统与神经网络 · 物理学 2009-11-10 Tapash Chakraborty , Pekka Pietilainen

The electronic states of a parabolic quantum dot in a magnetic field are studied with the inclusion of the spin-orbit interaction. The analitycal formulae for the ground state energy of the interacting system are derived. The spin-orbit…

凝聚态物理 · 物理学 2009-10-28 L. Jacak , J. Krasnyj , A. Wojs

The effects of spin-orbit (SO) coupling arising from the confinement potential in single and two vertically-coupled quantum dots have been investigated. Our work indicates that a dot containing a single electron shows the lifting of the…

介观与纳米尺度物理 · 物理学 2009-11-11 Anjana Bagga , Pekka Pietilainen , Tapash Chakraborty

We perform a systematic exact diagonalization study of spin-orbit coupling effects for stationary few-electron states confined in quasi two-dimensional double quantum dots. We describe the spin-orbit-interaction induced coupling between…

介观与纳米尺度物理 · 物理学 2010-06-17 M. P. Nowak , B. Szafran

We present results on the effects of spin-orbit coupling on the electronic structure of few-electron interacting quantum dots. The ground-state properties as a function of the number of electrons in the dot $N$ are calculated by means of…

介观与纳米尺度物理 · 物理学 2009-11-07 M. Governale

We present a new model for the study of spin-orbit coupling in interacting quasi-one-dimensional systems and solve it exactly to find the spectral properties of such systems. We show that the combination of spin-orbit coupling and…

介观与纳米尺度物理 · 物理学 2009-10-31 A. V. Moroz , K. V. Samokhin , C. H. W. Barnes

Low-lying energy levels of two interacting electrons confined in a two-dimensional parabolic quantum dot in the presence of an external magnetic field have been revised within the frame of a novel model. The present formalism, which gives…

量子物理 · 物理学 2009-10-11 Bulent Gonul , Ebru Bakir , Koray Koksal

Electronic bound states around charged impurities in two-dimensional systems with structural inversion asymmetry can be described in terms of a two-dimensional hydrogen atom in the presence of a Rashba spin-orbit interaction. Here, the…

介观与纳米尺度物理 · 物理学 2009-11-13 C. Grimaldi

The correlation energies for two interacting electrons in a parabolic quantum dot are studied via a pseudo-perturbation recipe. It is shown that the central spike term, ($m^2-1/4)/r^2$, plays a distinctive role in determining the spectral…

软凝聚态物质 · 物理学 2007-05-23 Omar Mustafa

We investigate theoretically the combined effects of the electron-electron and the Rashba spin-orbit interactions on two electrons confined in quasi-one-dimensional AlInSb-based double quantum dots. We calculate the two-electron wave…

介观与纳米尺度物理 · 物理学 2015-05-13 C. L. Romano , P. I. Tamborenea , S. E. Ulloa

The effect of Rashba spin-orbit (SO) interaction on the hole states in a quantum dot is studied in the presence of an external magnetic field. We demonstrate here that the Rashba SO coupling has a profound effect on the energy spectrum of…

介观与纳米尺度物理 · 物理学 2009-10-27 Aram Manaselyan , Tapash Chakraborty

Spin-orbit coupling effects are studied in quantum dots in InSb, a narrow-gap material. Competition between different Rashba and Dresselhaus terms is shown to produce wholesale changes in the spectrum. The large (and negative) $g$-factor…

介观与纳米尺度物理 · 物理学 2009-11-10 C. F. Destefani , S. E. Ulloa , G. E. Marques

Spin-orbit effects on electron-electron interaction are studied theoretically. The corrections to the Coulomb interaction of quantum well electrons induced by the spin-orbit coupling are derived. The developed theory is applied to calculate…

介观与纳米尺度物理 · 物理学 2009-05-08 M. M. Glazov , V. D. Kulakovskii

We present the renormalized perturbation series for the energy spectrum of the parabolic quantum dot with 2 -- 5 electrons considering ground and the lowest excited states. The proper classification of asymptotic energy levels is performed…

介观与纳米尺度物理 · 物理学 2009-10-30 E. Anisimovas , A. Matulis

Transport and thermodynamic properties of disordered conductors are considerably modified when the angle through which the electron spin precesses due to spin-orbit interaction (SOI) during the mean free time becomes significant. Cooperon…

介观与纳米尺度物理 · 物理学 2009-10-31 Yuli Lyanda-Geller

We study quantum states of electrons in magnetically doped quantum dots as a function of exchange coupling between electron and impurity spins, the strength of Coulomb interaction, confining potential, and the number of electrons. The…

介观与纳米尺度物理 · 物理学 2009-11-13 Ramin M. Abolfath , Pawel Hawrylak , Igor Zutic

We propose a novel approach to explore the properties of a quantum dot in the presence of the spin-orbit interaction and in a tilted magnetic field. The spin-orbit coupling within the quantum dot manifest itself as anti-crossing of the…

介观与纳米尺度物理 · 物理学 2009-11-11 Hong-Yi Chen , Vadim Apalkov , Tapash Chakraborty

Confinement asymmetry effects on the photoabsorption of a quantum well are discussed by means of a sum-rules approach using a Hamiltonian including a Rashba spin-orbt coupling. We show that while the strength of the excitation is zero when…

超导电性 · 物理学 2015-05-18 A. Ambrosetti , J. M Escartin , E. Lipparini , F. Pederiva
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