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1.
Вид документа
: Статья из журнала
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Автор(ы)
: Val'kov V. V., Aksenov S. V.
Заглавие
: Effects of inelastic spin-dependent electron transport through a spin nanostructure in a magnetic field
Место публикации
: J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 113, Is. 2. - P266-275. - ISSN 1063-7761,
DOI
10.1134/S1063776111060070
Примечания
: 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.
Предметные рубрики:
CONDUCTION
ANISOTROPY
JUNCTIONS
Ключевые слова
(''Своб.индексиров.''): 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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2.
Вид документа
: Статья из журнала
Шифр издания
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Автор(ы)
: Frolov G. I., Zhigalov V. S., Polskii A. I., Pozdnyakov V. G.
Заглавие
: Study of electroconductivity in cobalt nanocrystalline films
Место публикации
: Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 38, Is. 4. - P1208-1213. - ISSN 0367-3294
Примечания
: Cited References: 13
Предметные рубрики:
METAL-FILMS
RESISTIVITY
CONDUCTION
ELECTRONS
DENSITY
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3.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Val'kov V. V., Aksenov S.V.
Заглавие
: Effects of inelastic spin-dependent electron transport through a spin nanostructure in a magnetic field
Место публикации
: J. Exp. Theor. Phys. - NEW YORK: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 113, Is. 2. - С. 266-275. - AUG. - ISSN 1063-7761,
DOI
10.1134/S1063776111060070
Примечания
: 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]
Предметные рубрики:
CONDUCTION
ANISOTROPY
JUNCTIONS
Ключевые слова
(''Своб.индексиров.''): 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
,
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