Giant fluctuations of local magnetoresistance of organic spin valves

R. C. Roundy; D. Nemirovsky; V. Kagalovsky; M. E. Raikh

doi:10.1016/j.synthmet.2015.02.033

Giant fluctuations of local magnetoresistance of organic spin valves

R. C. Roundy, D. Nemirovsky, V. Kagalovsky, M. E. Raikh

Research output: Contribution to journal › Article › peer-review

Abstract

We generalize the seminal Julliere formula for the tunnel magnetoresistance (TMR) of a spin valve to include the spin memory loss of an electron in course of travel between the electrodes. This generalized version applies locally and for arbitrary mechanism of the spin dephasing. On the basis of the generalized formula we demonstrate that the distribution of TMR along the surface of magnetized electrodes is very broad and includes the sign reversals.

Original language	English
Pages (from-to)	13-16
Number of pages	4
Journal	Synthetic Metals
Volume	208
DOIs	https://doi.org/10.1016/j.synthmet.2015.02.033
State	Published - 24 Nov 2014
Externally published	Yes

Keywords

Hyperfine magnetic fields
Spin evolution matrix
Spin valve
Spin-flip probability
Tunnel magnetoresistance

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.synthmet.2015.02.033

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title = "Giant fluctuations of local magnetoresistance of organic spin valves",

abstract = "We generalize the seminal Julliere formula for the tunnel magnetoresistance (TMR) of a spin valve to include the spin memory loss of an electron in course of travel between the electrodes. This generalized version applies locally and for arbitrary mechanism of the spin dephasing. On the basis of the generalized formula we demonstrate that the distribution of TMR along the surface of magnetized electrodes is very broad and includes the sign reversals.",

keywords = "Hyperfine magnetic fields, Spin evolution matrix, Spin valve, Spin-flip probability, Tunnel magnetoresistance",

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T1 - Giant fluctuations of local magnetoresistance of organic spin valves

AU - Roundy, R. C.

AU - Nemirovsky, D.

AU - Kagalovsky, V.

AU - Raikh, M. E.

PY - 2014/11/24

Y1 - 2014/11/24

N2 - We generalize the seminal Julliere formula for the tunnel magnetoresistance (TMR) of a spin valve to include the spin memory loss of an electron in course of travel between the electrodes. This generalized version applies locally and for arbitrary mechanism of the spin dephasing. On the basis of the generalized formula we demonstrate that the distribution of TMR along the surface of magnetized electrodes is very broad and includes the sign reversals.

AB - We generalize the seminal Julliere formula for the tunnel magnetoresistance (TMR) of a spin valve to include the spin memory loss of an electron in course of travel between the electrodes. This generalized version applies locally and for arbitrary mechanism of the spin dephasing. On the basis of the generalized formula we demonstrate that the distribution of TMR along the surface of magnetized electrodes is very broad and includes the sign reversals.

KW - Hyperfine magnetic fields

KW - Spin evolution matrix

KW - Spin valve

KW - Spin-flip probability

KW - Tunnel magnetoresistance

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U2 - 10.1016/j.synthmet.2015.02.033

DO - 10.1016/j.synthmet.2015.02.033

M3 - Article

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VL - 208

SP - 13

EP - 16

JO - Synthetic Metals

JF - Synthetic Metals

ER -

Giant fluctuations of local magnetoresistance of organic spin valves

Abstract

Keywords

ASJC Scopus subject areas

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