About: Pressure dependence of the magneto-transport properties in Fe/MgO granular systems

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effect of hydrostatic pressure at room temperature on the resistance and magnetoresistance(MR) of a discontinuous metal-insulator multilayer (DMIM) of nominal composition [Fe(tFe=0.7nm)/MgO(tMgO=3nm)]15 has been studied. The resistivity of the DMIM,ρ, decreases linearlywith pressure indicating an increase in conduction via tunneling effect. The value of coefficient(1/ρO)dp/dP=–3.910-2kbar-1is higher than reported values in other granular films implying that the electronic state of the DMIM is close to the iron percolation threshold. At the maximum applied magnetic field (3 kOe) the MR ratio increases from 0.6% at ambient pressure to 1.1% at 7 kbar. This result can be explained by a reduction of the tunnel barrier width induced by the hydrostatic pressure. The effect of hydrostatic pressure at room temperature on the resistance and magnetoresistance(MR) of a discontinuous metal-insulator multilayer (DMIM) of nominal composition [Fe(tFe=0.7nm)/MgO(tMgO=3nm)]15 has been studied. The resistivity of the DMIM,ρ, decreases linearlywith pressure indicating an increase in conduction via tunneling effect. The value of coefficient(1/ρO)dp/dP=–3.910-2kbar-1is higher than reported values in other granular films implying that the electronic state of the DMIM is close to the iron percolation threshold. At the maximum applied magnetic field (3 kOe) the MR ratio increases from 0.6% at ambient pressure to 1.1% at 7 kbar. This result can be explained by a reduction of the tunnel barrier width induced by the hydrostatic pressure. (en)
Title	Pressure dependence of the magneto-transport properties in Fe/MgO granular systems Pressure dependence of the magneto-transport properties in Fe/MgO granular systems (en)
skos:prefLabel	Pressure dependence of the magneto-transport properties in Fe/MgO granular systems Pressure dependence of the magneto-transport properties in Fe/MgO granular systems (en)
skos:notation	RIV/68378271:_____/13:00424315!RIV14-AV0-68378271
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kamarád, Jiří Arnold, Zdeněk
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	99081
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/13:00424315
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	granular materials; tunneling magnetoresistance; hydrostatic pressure (en)
http://linked.open.../riv/klicoveSlovo	granular materials tunneling magnetoresistance hydrostatic pressure
http://linked.open...odStatuVydavatele	KR - Korejská republika
http://linked.open...ontrolniKodProRIV	[9427AE51FE82]
http://linked.open...i/riv/nazevZdroje	Journal of the Korean Physical Society
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	62
http://linked.open...iv/tvurceVysledku	Arnold, Zdeněk Kamarád, Jiří Algarabel, P. A. García-García, A. Pardo, J. A
http://linked.open...ain/vavai/riv/wos	000320122700021
issn	0374-4884
number of pages	3 (xsd:int)
http://bibframe.org/vocab/doi	10.3938/jkps.62.1458

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