Výsledky vyhledávání - "Kogan, V. R."

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Spin and orbital effects in a 2D electron gas in a random magnetic field

Autor: Efetov, K. B., Kogan, V. R.

Publikováno v: Phys. Rev. B 70, 195326 (2004).

Using the method of superbosonization we consider a model of a random magnetic field (RMF) acting on both orbital motion and spin of electrons in two dimensions. The method is based on exact integration over one particle degrees of freedom and reduct

Externí odkaz: http://arxiv.org/abs/cond-mat/0406171

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Ballistic electron motion in a random magnetic field

Autor: Efetov, K. B., Kogan, V. R.

Publikováno v: Phys. Rev. B 68, 245313 (2003)

Using a new scheme of the derivation of the non-linear $\sigma$-model we consider the electron motion in a random magnetic field (RMF) in two dimensions. The derivation is based on writing quasiclassical equations and representing their solutions in

Externí odkaz: http://arxiv.org/abs/cond-mat/0307424

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Non-linear $\sigma$-model for long range disorder and quantum chaos

Autor: Kogan, V. R., Efetov, K. B.

Publikováno v: Phys. Rev. B 67, 245312 (2003).

We suggest a new scheme of derivation of a non-linear ballistic $\sigma$-model for a long range disorder and quantum billiards. The derivation is based on writing equations for quasiclassical Green functions for a fixed long range potential and exact

Externí odkaz: http://arxiv.org/abs/cond-mat/0211258

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Electron-hole imbalance in superconductor-normal metal mesoscopic structures

Autor: Kogan, V. R., Pavlovskii, V. V., Volkov, A. F.

We analysed the electron-hole or, in another words, branch imbalance (BI) and the related electric potential $V_{imb}$ which may arise in a mesoscopic superconductor/normal metal (S/N) structure under non-equilibrium conditions in the presence of a s

Externí odkaz: http://arxiv.org/abs/cond-mat/0207098

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