The first-principle theory of electron dephasing by disorder-induced two state fluctuators is developed. There exist mechanisms dephasing. First, occurs due to direct transitions between the defect levels caused inelastic electron-defect scattering. second mechanism violation time reversal symmetry time-dependent fluctuations scattering potential. These originate from an interaction dynamic defects and conduction electrons forming a thermal bath. first contribution rate saturates as...

We have calculated a weak localization contribution to the diffusion constant of electrons in gas. The arises from quantum interference between pairs electron trajectories which are form closed loop traversed opposite time directions. is determined by mean free path due their collisions with atoms as well variation energy course such collisions. Both quantities, total contribution, depend on density and temperature can be separated leading classical term application relatively magnetic...

In a polar semiconductor mixed optic phonon-magnetoplasmon vibrations can be trapped within quantum well. Such localized effectively interact with the confined electrons of We demonstrate that these excitations responsible for magnetophonon resonance oscillation conductivity wells, i.e., phonon-induced resonant transitions between Landau levels. The frequency is shifted, due to screening effects, towards transverse ${\ensuremath{\omega}}_{t}.$ This explain observed shift in wells. give...

We discuss a quantum-interference (Cooper propagator) contribution to the thermoelectric coefficient of two-dimensional electron gas. are particularly interested in such for pure conductors (with no structural disorder) where it is high-temperature effect due quasielastic electron-phonon collisions. The magnetic field dependence considered, and case Boltzmann statistics discussed some detail.

In the weak localization of electrons there are two different dephasing regimes, namely, so-called ``phase jumps'' and wandering.'' They give, in particular, magnetic field dependence magnetoresistance. One should take this into consideration when analyzing experimental data.

Photoinduced magnetic flux has recently been observed in normal metals exposed to light. This effect is partly due the fact that light reflected from a metal surface transfers conduction electrons some of its quasimomentum. creates dc current which, for an appropriate geometry, brings about photomagnetic effect. There another contribution anisotropy probabilities electron transitions induced by light, combination with diffuse reflection at surface. We present here theory dependence...

We study the ground state of a one-dimensional channel with strong attractive electron–electron interactions at low temperatures. In spite fact that, temperatures, attracting electrons is macroscopically large number cooperons, resulting superconducting phase has significant differences. Namely, order parameter (which should appear in according to Landau’s phenomenological theory) turns out be zero. However, elastic impurities implanted will not lead dissipation supercurrent associated...

Using a previously derived effective theory we explore the conductance in Luttinger model with one impurity. A new approach to renormalization group (RG) analysis of this is developed. It based on original Gell-Mann-Low formulation RG. We sum up infrared logarithmic contributions leading and few subsequent approximations. analyze validity widely used 'poor man's' scaling find that it applicable only approximation. Our results for corrections approximation are different from obtained other...

The dynamical response of a double-barrier resonant-tunneling structure (DBRTS) on external ac bias V(t) is studied. rate equation for the occupation number level in DBRTS well as conditions required this are derived case coherent tunneling. analysis question provides possibility to obtain easily analytic results current through all limiting cases interest.

The low-temperature thermoelectric resonant transport through the Anderson impurities under Kondo resonance conditions is studied. It shown that for smooth impurity (AI) density of states current parametrically larger than in absence on-site Coulomb correlation, which signature effect. In case singular AI some new characteristic temperature appears. For temperatures smaller this, Kondo-type contributions to are important, while opposite conventional picture returns.

We show that conductance of 1D channel with one point-like impurity critically depends on asymptotic behavior e-e interaction at small momenta k (about inverse length a channel). Conductance reemerges (contrary to the case repulsive potential) if potential V(k=0)= 0. For example, this happens bare is screened by charges in bulk. The relation phenomena long-range order present Luttinger model discussed.

The exact solution to the problem of scattering one-dimensional attracted fermions on a point impurity, which exists in Kane–Fisher model is analyzed for Luttinger parameter equal 2. expression obtained frequency dependence coefficient fermion reflection from an impurity demonstrates impossibility extrapolation results relatively weak fermion–fermion interaction range coupling constants order unity.

The expression for the conductance of a 1D channel, which has been obtained using well-known exact solution, is analyzed. It shown that in case strong electron—electron interaction, slowest (linear frequency) asymptotics determined by behavior interaction region transition from to 3D motion realized near impurity.

The quantum-interference contribution to the phonon-drag component of thermopower is considered. It shown that in a typical experimental situation this suppressed due dephasing caused by relatively high frequencies some phonons. Experiments concerning thermoelectric transport are also discussed.