The quantum spin-valve in cobalt atomic point contacts

Harsh Deep Chopra; Matthew R. Sullivan; Jason N. Armstrong; Susan Z. Hua

doi:10.1038/nmat1510

The quantum spin-valve in cobalt atomic point contacts

Harsh Deep Chopra
, Matthew R. Sullivan
, Jason N. Armstrong
, Susan Z. Hua

Department of Mechanical and Aerospace Engineering

SUNY Buffalo

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

71 Scopus citations

Abstract

The quantized conductance in semiconductors and metals in cobalt atomic point contacts was studied. Magnetic materials reduced to a single atom show unexpected magnetic properties that interact with the spin states of the transmitting electrons. The integration of quantized conductance and spin-dependent transport across a magnetic atom gave rise to a multichannel system across which the transmission of electron waves could be regulated by a domain wall acting as a valve. The results provided an evolutionary trace of spin-dependent transport from a single atom to larger ensembles.

Original language	English
Pages (from-to)	832-837
Number of pages	6
Journal	Nature Materials
Volume	4
Issue number	11
DOIs	https://doi.org/10.1038/nmat1510
State	Published - Nov 2005

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title = "The quantum spin-valve in cobalt atomic point contacts",

abstract = "The quantized conductance in semiconductors and metals in cobalt atomic point contacts was studied. Magnetic materials reduced to a single atom show unexpected magnetic properties that interact with the spin states of the transmitting electrons. The integration of quantized conductance and spin-dependent transport across a magnetic atom gave rise to a multichannel system across which the transmission of electron waves could be regulated by a domain wall acting as a valve. The results provided an evolutionary trace of spin-dependent transport from a single atom to larger ensembles.",

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N2 - The quantized conductance in semiconductors and metals in cobalt atomic point contacts was studied. Magnetic materials reduced to a single atom show unexpected magnetic properties that interact with the spin states of the transmitting electrons. The integration of quantized conductance and spin-dependent transport across a magnetic atom gave rise to a multichannel system across which the transmission of electron waves could be regulated by a domain wall acting as a valve. The results provided an evolutionary trace of spin-dependent transport from a single atom to larger ensembles.

AB - The quantized conductance in semiconductors and metals in cobalt atomic point contacts was studied. Magnetic materials reduced to a single atom show unexpected magnetic properties that interact with the spin states of the transmitting electrons. The integration of quantized conductance and spin-dependent transport across a magnetic atom gave rise to a multichannel system across which the transmission of electron waves could be regulated by a domain wall acting as a valve. The results provided an evolutionary trace of spin-dependent transport from a single atom to larger ensembles.

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DO - 10.1038/nmat1510

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JO - Nature Materials

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The quantum spin-valve in cobalt atomic point contacts

Abstract

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