Výsledky vyhledávání - "D. G. Polyakov"

Thermal Diffusivity of the Cryomorphic Soils of Steppe Complexes on Limestone

Autor: D. G. Polyakov, I. V. Kovda, T. A. Arkhangel’skaya, Anna G. Ryabukha

Publikováno v: Eurasian Soil Science. 54:1328-1336

Thermal diffusivity of the cryomorphic soils formed on limestone in the Orenburg oblast (Russia) has been studied. Soils are identified as cryomorphic basing on the morphological features, such as polygonal microrelief, ground wedges, involutions, ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5301da50699c84ab019a483dd98aa756
https://doi.org/10.1134/s1064229321090064

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RELICT CRYOGENIC MICRORELIEF IN THE FLAT-BOTTOMED DRY INTERSTITIAL VALLEYS OF THE HUBERLIN MOUNTAINS IN THE SOUTH URAL

Autor: D. G. Polyakov, I. D. Streletskaya, I. V. Kovda, A. G. Ryabukha, I.G. Yakovlev

Publikováno v: PROCEEDINGS OF THE ONLINE SCIENTIFIC SESSION dedicated to the 110th anniversary of the birth of Corresponding Member of the USSR Academy of Sciences Vladimir Nikolaevich Saks.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e9375842d08bc9fd82b266f8b82fd545
https://doi.org/10.18303/b978-5-4262-0104-0-371

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The cryogenic structure and texture of seasonally freezing soil in the steppe zone of the Trans-Volga-Urals region

Autor: I. V. Kovda, D. G. Polyakov, A. G. Ryabukha

Publikováno v: IOP Conference Series: Earth and Environmental Science. 817:012087

The formation of ice lenses and associated frost heave were found in soils the steppe environment with positive mean annual air temperature. The ice lenses due to soil freezing occur in soils with expressed microrelief when they have additional groun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b2d48ba56bbacb2cb8b4eb33a7465eb
https://doi.org/10.1088/1755-1315/817/1/012087

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Quasiclassical memory effects: anomalous transport properties of two-dimensional electrons and composite fermions subject to a long-range disorder

Autor: Alexander D. Mirlin, D. G. Polyakov, Peter Wölfle, Ferdinand Evers

Publikováno v: Physics-Uspekhi. 44:27-31

We have studied the ac response and magnetoresistance of a two-dimensional electron gas in high-mobility samples in the presence of smooth disorder, with emphasis on the composite-fermion description of a half-filled Landau level. We have found that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b13d0b379c2152e0cbad4e9e14691b6a
https://doi.org/10.1070/1063-7869/44/10s/s04

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Critical Conductance of a Mesoscopic System: Interplay of the Spectral and Eigenfunction Correlations at the Metal-Insulator Transition

Autor: D. G. Polyakov

Publikováno v: Physical Review Letters. 81:4696-4699

We study the system-size dependence of the averaged critical conductance $g(L)$ at the Anderson transition. We have: (i) related the correction $\delta g(L)=g(\infty)-g(L)\propto L^{-y}$ to the spectral correlations; (ii) expressed $\delta g(L)$ in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9798f45d6727b999352b6043472eeab5
https://doi.org/10.1103/physrevlett.81.4696

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Activated conductivity in the quantum Hall effect

Autor: Michael M. Fogler, D. G. Polyakov, Boris I Shklovskii

Publikováno v: Surface Science. :255-260

Activated dissipative conductivity σxx = σ*xxexp(−Δ/T) and the activated deviation of the Hall conductivity from the precise quantization δσxy = σxy −ie2/h= σ*xyexp(−Δ/T) are studied in a plateau range of the quantum Hall effect. The pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26bae9119c03f27f645c69735dfb732a
https://doi.org/10.1016/0039-6028(96)00397-4

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Activated Conductivity in the Quantum Hall Effect

Autor: Boris I Shklovskii, D. G. Polyakov

Publikováno v: Physical Review Letters. 73:1150-1153

Activated dissipative conductivity ¢==o-*~exp(-A/T) and the activated deviation of the Hall conductivity from the precise quanfizafion &r~v=~--ie2/hf~e xp(--A/T) are studied in a plateau range of the quantum Hall effect. The prefactors cr*~ and o*~

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f66a6411e9d0f48d59afe78e0da582fe
https://doi.org/10.1103/physrevlett.73.1150

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Conductivity peaks in the quantum Hall regime: Broadening with temperature, current, and frequency

Autor: Boris I Shklovskii, D. G. Polyakov

Publikováno v: Surface Science. 305:151-155

We argue that it is hopping transport that is responsible for broadening of the σxx peaks in low-mobility samples. Explicit expressions for the width Δν of a peak as a function of the temperature T, current J, and frequency ω are found. It is sho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cef9263b1b58c4c3a62fb09f1b20335
https://doi.org/10.1016/0039-6028(94)90876-1

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Conductivity peaks broadening in the quantum Hall regime

Autor: D. G. Polyakov, Boris I Shklovskii

Publikováno v: Physica A: Statistical Mechanics and its Applications. 200:476-482

We argue that it is the hopping transport that is responsible for broadening of the σxx peaks. Explicit expressions for the width Δν of a peak as a function of the temperature T, current J and frequency ω are found. It is shown that Δν grows wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d7db8d69aea1f4515bae90507260ade
https://doi.org/10.1016/0378-4371(93)90549-j

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