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1.
Effects of inelastic
spin-dependent electron transport through a spin nanostructure in a magnetic field / V. V. Val'Kov, S. V. Aksenov> // J. Exp. Theor. Phys. - 2011. -
Vol. 113
,
Is. 2
. - P266-275,
DOI
10.1134/S1063776111060070. - Cited Reference Count: 30. - Гранты: This study was carried out under the program of the Physical Science Department of the Russian Academy of Sciences, Federal Target Program "Scientific and Scientific-Pedagogical Personnel of Innovative Russia in 2009-2013," Interdisciplinary Integration project no. 53 of the Siberian Branch of the Russian Academy of Sciences, and under partial support from the Russian Foundation for Basic Research (project no. 09-02-00127). The research work of one of the authors (S.V.A) was supported by grant no. MK-1300.2011.2 from the President of the Russian Federation. - Финансирующая организация: Russian Foundation for Basic Research [09-02-00127]; Russian Federation [MK-1300.2011.2] . - AUG. - ISSN 1063-7761
Рубрики:
CONDUCTION
ANISOTROPY
JUNCTIONS
Кл.слова (ненормированные):
antiferromagnetic coupling
--
colossal magnetoresistance effect
--
iv characteristics
--
metallic contacts
--
potential profiles
--
spectral characteristics
--
spin dependent transport
--
spin dimer
--
spin moments
--
spin-dependent electron transport
--
spin-flip process
--
tight-binding approximations
--
transmission coefficients
--
antiferromagnetism
--
colossal magnetoresistance
--
current voltage characteristics
--
electric resistance
--
nanostructures
--
transport properties
--
magnetic field effects
Аннотация:
The transport properties and current-voltage (I-V) characteristics of a system of spin dimers with antiferromagnetic coupling arranged between metallic contacts are investigated in the tight binding approximation using the Landauer-Buttiker formalism. It is shown that the s-d(f) exchange interaction between the spin moments of the electrons being transported and the spins of the nanostructure leads to the formation of a potential profile as well as its variation due to spin-flip processes. As a result, the spin-dependent transport becomes inelastic, and the transmission coefficient and the I-V characteristic are strongly modified. It is found that the application of a magnetic field induces additional transparency peaks in the spectral characteristic of the system and causes the colossal magnetoresistance effect.
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,
Scopus
,
eLibrary
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Reshetnikov Siberian State Aerosp Univ, Krasnoyarsk 660041, Russia
Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Aksenov, S.V.
}
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2.
Val'kov, V. V.
Effects of inelastic spin-dependent electron transport through a spin nanostructure in a magnetic field / V. V. Val'kov, S. V. Aksenov> // J. Exp. Theor. Phys. - 2011. -
Vol. 113
,
Is. 2
. - P. 266-275,
DOI
10.1134/S1063776111060070. - Cited References: 30. - This study was carried out under the program of the Physical Science Department of the Russian Academy of Sciences, Federal Target Program "Scientific and Scientific-Pedagogical Personnel of Innovative Russia in 2009-2013," Interdisciplinary Integration project no. 53 of the Siberian Branch of the Russian Academy of Sciences, and under partial support from the Russian Foundation for Basic Research (project no. 09-02-00127). The research work of one of the authors (S.V.A) was supported by grant no. MK-1300.2011.2 from the President of the Russian Federation. . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
CONDUCTION
ANISOTROPY
JUNCTIONS
Кл.слова (ненормированные):
Antiferromagnetic coupling
--
Colossal magnetoresistance effect
--
IV characteristics
--
Metallic contacts
--
Potential profiles
--
Spectral characteristics
--
Spin dependent transport
--
Spin dimer
--
Spin moments
--
Spin-dependent electron transport
--
Spin-flip process
--
Tight-binding approximations
--
Transmission coefficients
--
Antiferromagnetism
--
Colossal magnetoresistance
--
Current voltage characteristics
--
Electric resistance
--
Nanostructures
--
Transport properties
--
Magnetic field effects
Аннотация:
The transport properties and current-voltage (I-V) characteristics of a system of spin dimers with antiferromagnetic coupling arranged between metallic contacts are investigated in the tight binding approximation using the Landauer-Buttiker formalism. It is shown that the s-d(f) exchange interaction between the spin moments of the electrons being transported and the spins of the nanostructure leads to the formation of a potential profile as well as its variation due to spin-flip processes. As a result, the spin-dependent transport becomes inelastic, and the transmission coefficient and the I-V characteristic are strongly modified. It is found that the application of a magnetic field induces additional transparency peaks in the spectral characteristic of the system and causes the colossal magnetoresistance effect.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
[Val'kov, V. V.
Aksenov, S. V.] Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia
[Val'kov, V. V.
Aksenov, S. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Val'kov, V. V.] Reshetnikov Siberian State Aerosp Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Reshetnikov Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation
Доп.точки доступа:
Aksenov, S. V.; Аксенов, Сергей Владимирович; Вальков, Валерий Владимирович
}
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3.
Study of electroconductivity
in cobalt nanocrystalline films / G. I. Frolov [и др.]> // Fiz. Tverd. Tela. - 1996. -
Vol. 38
,
Is. 4
. - P. 1208-1213. - Cited References: 13 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
METAL-FILMS
RESISTIVITY
CONDUCTION
ELECTRONS
DENSITY
WOS
Доп.точки доступа:
Frolov, G. I.; Zhigalov, V. S.; Polskii, A. I.; Pozdnyakov, V. G.
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