Zobrazeno 1 - 10
of 365
pro vyhledávání: '"Gantmakher, A."'
Autor:
Gantmakher, V. F.
Publikováno v:
JETP letters 94(8), 626 (2011)
It has been shown that the observed correlation between the resistivity $\rho$ of high-resistive metallic alloys and the sign of the temperature derivative $d\rho/dT$ can be explained by taking into account the weak localization. This correlation is
Externí odkaz:
http://arxiv.org/abs/1112.0429
Autor:
Gantmakher, V. F.
Publikováno v:
Fiz. Nizkikh Temper. 37(1), 71 (2011) [Engl. translation: Low Temper. Physics 37(1), (2011)]
Different physical phenomena are discussed which should help to comprehend and interpret the concept of localized superconductive pairs; these include behavior of highly resistive granular materials with superconducting grains, parity effect and the
Externí odkaz:
http://arxiv.org/abs/1101.3203
Autor:
Gantmakher, V. F., Dolgopolov, V. T.
Publikováno v:
Physics-Uspekhi, 53, 3 (2010)
The current understanding of the superconductor-insulator transition is discussed level by level in a cyclic spiral-like manner. At the first level, physical phenomena and processes are discussed which, while of no formal relevance to the topic of tr
Externí odkaz:
http://arxiv.org/abs/1004.3761
Autor:
Gantmakher, V. F., Dolgopolov, V. T.
Publikováno v:
Physics - Uspekhi, 51, 1 (2008)
Metal--insulator transitions and transitions between different quantum Hall liquids are used to describe the physical ideas forming the basis of quantum phase transitions and the methods of application of theoretical results in processing experimenta
Externí odkaz:
http://arxiv.org/abs/0803.3509
Magnetotransport of superconducting Nd_{2-x}Ce_xCuO_{4+y} (NdCeCuO) films is studied in the temperature interval 0.3-30 K. The microscopic theory of the quantum corrections to conductivity, both in the Cooper and in the diffusion channels, qualitativ
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303507
Autor:
Gantmakher, V. F.
Publikováno v:
UFN 172(11), 1283 (2002) [English translation in Physics-Uspekhi 45(11), (2002)]
Analysis of experimental data shows that the metal--insulator transition is possible in materials composed of atoms of only metallic elements. Such a transition may occur in spite of the high concentration of valence electrons. It requires stable ato
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212097
Autor:
Gantmakher, V. F., Golubkov, M. V.
Publikováno v:
JETP Letters 73(3) (2001)
Resistive superconducting zero-field transition in amorphous In-O films in states from the vicinity of the insulator-superconductor transition is analyzed in terms of two characteristic temperatures: the upper one, $T_{c0}$, where the finite amplitud
Externí odkaz:
http://arxiv.org/abs/cond-mat/0101447
Publikováno v:
JETP Letters 72, 21 (2000)
The temperature dependence of upper critical field B_c2 was determined from the shift of resistive transition \Delta T(B) in nearly optimally doped Nd_{2-x}Ce_xCuO_{4-y} single crystals. Within the experimental accuracy, the weak-field data are descr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0101028
We study the response of a thin superconducting amorphous InO film with variable oxygen content to a parallel magnetic field. A field-induced superconductor-insulator transition (SIT) is observed that is very similar to the one in normal magnetic fie
Externí odkaz:
http://arxiv.org/abs/cond-mat/0004377
We have studied the magnetic-field-tuned superconductor-insulator quantum transition (SIT) in amorphous In-O films with different oxygen content and, hence, different electron density. While for states of the film near the zero-field SIT the two-dime
Externí odkaz:
http://arxiv.org/abs/cond-mat/0002065