FACW_PHAS_2002_10897550_Tang_Dai_Wang_Zhou_Ruzycki_Diebold.pdf (479.76 kB)
Current-controlled channel switching and magnetoresistance in an Fe3C island film supported on a Si substrate
journal contribution
posted on 2021-11-15, 21:33 authored by Jinke Tang, Jianbiao Dai, Kaiying Wang, Weilie Zhou, Nancy Ruzycki, Ulrike DieboldA film of magnetic Fe3C islands separated by nanochannels of graphite was prepared with pulsed laser deposition on a Si substrate with a native SiO2 surface. When the temperature is increased above 250 K the resistance suddenly drops because electron conduction switches from the film to the Si inversion layer underneath. The film shows a negative magnetoresistance. The inversion layer exhibits a large positive magnetoresistance. The transition to the low resistance channel can be reversed by applying a large measuring current, making possible current-controlled switching between two types of electron magnetotransport at room temperature.
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engLanguage
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University of Wyoming. LibrariesJournal title
JOURNAL OF APPLIED PHYSICSCollection
Faculty Publications - Physics and AstronomyDepartment
- Library Sciences - LIBS