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相关论文: Coulomb Blockade Peak Spacing Distribution: The In…

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We study the statistics of the spacing between Coulomb blockade conductance peaks in quantum dots with large dimensionless conductance g. Our starting point is the ``universal Hamiltonian''--valid in the g->oo limit--which includes the…

介观与纳米尺度物理 · 物理学 2007-05-23 Gonzalo Usaj , Harold U. Baranger

We derive a closed expression for the finite-temperature conductance of a Coulomb-blockade quantum dot in the presence of an exchange interaction and a parallel magnetic field. Parallel-field dependence of Coulomb-blockade peak position has…

介观与纳米尺度物理 · 物理学 2007-05-23 Daniel Huertas-Hernando , Y. Alhassid

We derive a closed expression for the linear conductance through a quantum dot in the Coulomb-blockade regime in the presence of a constant exchange interaction. With this expression we calculate the temperature dependence of the…

介观与纳米尺度物理 · 物理学 2009-11-07 Y. Alhassid , T. Rupp

We study the effect of the exchange interaction on the Coulomb blockade peak height statistics in chaotic quantum dots. Because exchange reduces the level repulsion in the many body spectrum, it strongly affects the fluctuations of the peak…

介观与纳米尺度物理 · 物理学 2016-08-31 Gonzalo Usaj , Harold U. Baranger

We derive the finite temperature conductance peak distributions and peak-to-peak correlations for quantum dots in the Coulomb blockade regime assuming the validity of random matrix theory. The distributions are universal, depending only on…

介观与纳米尺度物理 · 物理学 2009-10-31 Y. Alhassid , M. Gokcedag , A. D. Stone

The conductance in Coulomb blockade quantum dots exhibits sharp peaks whose spacings fluctuate with the number of electrons. We derive the temperature-dependence of these fluctuations in the statistical regime and compare with recent…

介观与纳米尺度物理 · 物理学 2009-10-31 Y. Alhassid , S. Malhotra

For Coulomb blockade peaks in the linear conductance of a quantum dot, we study the correction to the spacing between the peaks due to dot-lead coupling. This coupling can affect measurements in which Coulomb blockade phenomena are used as…

介观与纳米尺度物理 · 物理学 2007-05-23 Serguei Vorojtsov , Harold U. Baranger

We study the combined effect of finite temperature, underlying classical dynamics, and deformations on the statistical properties of Coulomb blockade conductance peaks in quantum dots. These effects are considered in the context of the…

介观与纳米尺度物理 · 物理学 2009-10-31 Raul O. Vallejos , Caio H. Lewenkopf , Eduardo R. Mucciolo

We use a Hartree-Fock-Koopmans approach to study spin and interaction effects in a diffusive or chaotic quantum dot. In particular, we derive the statistics of the spacings between successive Coulomb-blockade peaks. We include fluctuations…

介观与纳米尺度物理 · 物理学 2009-11-07 Y. Alhassid , S. Malhotra

The temperature dependence of Coulomb blockade peak height correlation is used to investigate how adding electrons to a quantum dot alters or "scrambles" its electronic spectrum. Deviations from finite-temperature random matrix theory with…

介观与纳米尺度物理 · 物理学 2009-10-31 S. R. Patel , D. R. Stewart , C. M. Marcus , M. Gokcedag , Y. Alhassid , A. D. Stone , C. I. Duruoz , J. S. Harris

We discuss the calculation of the linear conductance through a Coulomb-blockade quantum dot in the presence of interactions beyond the charging energy. In the limit where the temperature is large compared with a typical tunneling width, we…

介观与纳米尺度物理 · 物理学 2009-11-07 Y. Alhassid , T. Rupp , A. Kaminski , L. I. Glazman

We calculate the finite-temperature conductance peak-height distributions in Coublomb-blockade quantum dots in the limit where the inelastic scattering rate in the dot is large compared with the mean elastic tunneling rate. The relative…

介观与纳米尺度物理 · 物理学 2009-11-07 T. Rupp , Y. Alhassid , S. Malhotra

We derive a universal Hamiltonian for a quantum dot in the presence of spin-orbit interaction in the symmetry limits of a strong spin-dependent Aharonov-Bohm-like term. We also derive a closed expression for the conductance through such a…

介观与纳米尺度物理 · 物理学 2007-05-23 Y. Alhassid , T. Rupp

We study the mechanism of nuclear spin relaxation in quantum dots due to the electron exchange with 2D gas. We show that the nuclear spin relaxation rate is dramatically affected by the Coulomb blockade and can be controlled by gate…

介观与纳米尺度物理 · 物理学 2009-11-07 Y. B. Lyanda-Geller , I. L. Aleiner , B. L. Altshuler

We use Kohn-Sham spin-density-functional theory to study the statistics of ground-state spin and the spacing between conductance peaks in the Coulomb blockade regime for both 2D isolated and realistic quantum dots. We make a systematic…

介观与纳米尺度物理 · 物理学 2007-05-23 Hong Jiang , Denis Ullmo , Weitao Yang , Harold U. Baranger

We study the effect of spin-orbit scattering on the statistics of the conductance of a quantum dot for Coulomb blockade peaks and valleys. We find the distribution function of the peak heights for strong spin-orbit scattering in the…

介观与纳米尺度物理 · 物理学 2009-11-11 Y. Ahmadian , I. L. Aleiner

We study influence of electron-electron interaction on statistics of Coulomb blockade peak spacings in disordered quantum dots. It is shown that the interaction combined with fluctuations of eigenfunctions of the Fermi sea, enhances the…

介观与纳米尺度物理 · 物理学 2009-10-28 Ya. M. Blanter , A. D. Mirlin , B. A. Muzykantskii

The influence of electron-electron (e-e) interactions on the transmission through a quantum dot is investigated numerically for the Coulomb blockade regime. For vanishing magnetic fields, the conductance peak height statistics is found to…

介观与纳米尺度物理 · 物理学 2009-10-30 R. Berkovits , U. Sivan

We study the effect of electronic interactions on the addition spectra and on the energy level distributions of two-dimensional quantum dots with weak disorder using the self-consistent Hartree-Fock approximation for spinless electrons. We…

介观与纳米尺度物理 · 物理学 2009-10-31 Avraham Cohen , Klaus Richter , Richard Berkovits

We review the mechanisms of low-temperature electron transport across a quantum dot weakly coupled to two conducting leads. Conduction in this case is controlled by the interaction between electrons. At temperatures moderately lower than…

介观与纳米尺度物理 · 物理学 2007-05-23 L. I. Glazman , M. Pustilnik
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