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The thermoelectric coefficient $\eta(T)$ in unconventional superconductors is enhanced below $T_c$ by intermediate strength impurity scattering that is intrinsically particle-hole asymmetric. We compute $\eta(T)$ for a strong-coupling…

超导电性 · 物理学 2009-11-11 Mikael Fogelstrom , Tomas Lofwander

Motivated by a recent tunneling experiment in a double quantum-well system, which reports an anomalously enhanced electronic scattering rate in a clean two-dimensional electron gas, we calculate the inelastic quasiparticle lifetime due to…

凝聚态物理 · 物理学 2009-10-28 Lian Zheng , S. Das Sarma

We present systematic theoretical results on thermoelectric effects in semimetals based on the variational method of the linearized Boltzmann equation. Inelastic electron-hole scattering is known to play an important role in the unusual…

强关联电子 · 物理学 2023-03-31 Keigo Takahashi , Hiroyasu Matsuura , Hideaki Maebashi , Masao Ogata

A random interaction matrix model is used to study the statistics of conductance peak heights in Coulomb blockade quantum dots. When the single-particle dynamics conserves time-reversal symmetry, the peak height statistics is insensitive to…

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

We show that randomness of the electron wave functions in a quantum dot contributes to the fluctuations of the positions of the conductance peaks. This contribution grows with the conductance of the junctions connecting the dot to the…

介观与纳米尺度物理 · 物理学 2009-10-31 A. Kaminski , L. I. Glazman

We study the Coulomb blockade of tunneling through a double quantum dot. The temperature dependence of the linear conductance is strongly affected by the inter-dot tunneling. As the tunneling grows, a crossover from temperature-independent…

凝聚态物理 · 物理学 2009-10-28 K. A. Matveev , L. I. Glazman , H. U. Baranger

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

We study the influence of inelastic electron-electron scattering on the temperature variation of the Seebeck coefficient in the normal phase of quasi-one-dimensional organic superconductors. The theory is based on the numerical solution of…

强关联电子 · 物理学 2016-12-07 M. Shahbazi , C. Bourbonnais

We derive closed expressions for the universal weak localization peak of the average conductance peak heights in Coulomb blockade quantum dots in the crossover from orthogonal to unitary symmetry. The scale for the crossover is independent…

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

The fluctuations and the distribution of the conductance peak spacings of a quantum dot in the Coulomb-blockade regime are studied and compared with the predictions of random matrix theory (RMT). The experimental data were obtained in…

介观与纳米尺度物理 · 物理学 2009-10-30 F. Simmel , T. Heinzel , D. A. Wharam

Colliding high energy hadrons either produce new particles or scatter elastically with their quantum numbers conserved and no other particles produced. We consider the latter case here. Although inelastic processes dominate at high…

高能物理 - 唯象学 · 物理学 2015-06-05 I. M. Dremin

Closed expressions are derived for the resonance widths and Coulomb blockade conductance peak heights in quantum dots for the crossover regime between conserved and broken time-reversal symmetry. The results hold for leads with any number…

凝聚态物理 · 物理学 2008-02-03 Y. Alhassid , J. N. Hormuzdiar , N. D. Whelan

We study the fluctuations of an energy level as a function of the number of electrons $m$ added to a Coulomb-blockade quantum dot. A microscopic calculation in the limit of Koopmans' theorem predicts that the standard deviation of these…

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

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 show that two intriguing features of mesoscopic transport, namely the modulation of Coulomb blockade peak-heights and the transmission phase-lapses occurring between subsequent peaks, are closely related. Our analytic arguments are…

介观与纳米尺度物理 · 物理学 2017-12-20 Rodolfo A. Jalabert , Rafael A. Molina , Guillaume Weick , Dietmar Weinmann

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

The effect of inelastic scattering on quantum tunneling through a rectangular potential barrier, of length $L$, containing randomly distributed impurities, is considered. It is shown that, despite the fact that the inelastic transition…

无序系统与神经网络 · 物理学 2007-05-23 Alex Levchenko

We investigate scattering through chaotic ballistic quantum dots in the Coulomb blockade regime. Focusing on the scattering phase, we show that large universal sequences emerge in the short wavelength limit, where phase lapses of $\pi$…

介观与纳米尺度物理 · 物理学 2012-12-13 Rafael A. Molina , Rodolfo A. Jalabert , Dietmar Weinmann , Philippe Jacquod

We propose the autocorrelator of conductance peak heights as a signature of the underlying chaotic dynamics in quantum dots in the Coulomb blockade regime. This correlation function is directly accessible to experiments and its decay width…

凝聚态物理 · 物理学 2009-10-28 Henrik Bruus , Caio H. Lewenkopf , Eduardo R. Mucciolo

We calculate the Coulomb Blockade peak spacing distribution at finite temperature using the recently introduced ``universal Hamiltonian'' to describe the e-e interactions. We show that the temperature effect is important even at…

介观与纳米尺度物理 · 物理学 2009-11-07 Gonzalo Usaj , Harold U. Baranger