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Вид документа : Статья из журнала Шифр издания :
Автор(ы) : Tarasov A. S., Bondarev I. A., Rautskii M. V., Lukyanenko A. V., Tarasov I. A., Varnakov S. N., Ovchinnikov S. G., Volkov N. V.
Заглавие : Room temperature spin accumulation effect in boron doped Si created by epitaxial Fe3Si/p-Si Schottky contact
Коллективы :
Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [16-42-243046, 16-42-242036, 16-42-243060]
Место публикации : J. Surf. Ingestig. - 2018. - Vol. 12, Is. 4. - P.633-637. - ISSN 1027-4510, DOI 10.1134/S1027451018040171. - ISSN 1819-7094(eISSN) Примечания : Cited References: 33. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project nos. 16-42-243046, 16-42-242036 and 16-42-243060.
Предметные рубрики: HYBRID STRUCTURES CURRENT-VOLTAGE FILMS TRANSPORT SILICON Ключевые слова (''Своб.индексиров.''): spintronics--hybrid structures--schottky diode--hanle effect--spin--accumulation Аннотация: To study spin-dependent transport phenomena in Fe3Si/p-Si structures we fabricated 3-terminal planar microdevices and metal/semiconductor diode using conventional photolithography and wet chemical etching. IaEuro'V curve of prepared diode demonstrates rectifying behavior, which indicates the presence of Schottky barrier in Fe3Si/p-Si interface. Calculated Schottky barrier height is 0.57 eV, which can provide necessary conditions for spin accumulation in p-Si. Indeed, in 3-terminal planar device with Fe3Si/p-Si Schottky contact Hanle effect was observed. By the analysis of Hanle curves spin lifetime spin diffusion length in p-Si were calculated, which are 145 ps and 405 nm, respectively (at T = 300 K). Spin lifetime strongly depends on temperature which can be related to the fact that spin-dependent transport in our device is realized via the surface states. This gives a perspective of creation of spintronic devices based on metal/semiconductor structure without need for forming tunnel or Schottky tunnel contact.
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