Spin regulation in composite spin-filter barrier devices

Title
Spin regulation in composite spin-filter barrier devices
Authors
Guo-Xing Miao장준연Badih A. AssafDonald HeimanJagadeesh S. Moodera
Keywords
spin filter; spin regulation; EuS; tunneling magnetoresistance; magnetic insulator
Issue Date
2014-04
Publisher
Nature Communications
Citation
VOL 5, 3682-1-3682-6
Abstract
Magnetic insulators are known to provide large effective Zeeman fields that are confined at an interface, making them especially powerful in modifying adjacent one- or two-dimensional electronic structures. Utilizing this phenomenon and the other important property of magnetic insulators—spin filtering—here we report the generation and subsequent detection of a large interface field, as large as tens of tesla in EuS/Al/EuS heterostructures with metallic coulomb islands confined within a magnetic insulator barrier. The unique energy profile across this sandwich structure produces spin-assisted charge transfer across the device, generating a spontaneous spin current and voltage. These unique properties can be practical for controlling spin flows in electronic devices and for energy harvesting.
URI
http://pubs.kist.re.kr/handle/201004/47587
ISSN
20411723
Appears in Collections:
KIST Publication > Article
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