Инд. авторы:	Yoshikawa T., Ishida Y., Sumida K., Chen J., Kokh K.A., Tereshchenko O.E., Shin S., Kimura A.
Заглавие:	Enhanced photovoltage on the surface of topological insulator via optical aging
Библ. ссылка:	Yoshikawa T., Ishida Y., Sumida K., Chen J., Kokh K.A., Tereshchenko O.E., Shin S., Kimura A. Enhanced photovoltage on the surface of topological insulator via optical aging // Applied Physics Letters. - 2018. - Vol.112. - Iss. 19. - Art.192104. - ISSN 0003-6951. - EISSN 1077-3118.
Внешние системы:	DOI: 10.1063/1.5008466; РИНЦ: 35527718; SCOPUS: 2-s2.0-85046904191; WoS: 000431980100017;
Реферат:	eng: The efficient generation of spin-polarized current is one of the keys to realizing spintronic devices with a low power consumption. Topological insulators are strong candidates for this purpose. A surface photovoltaic effect can be utilized on the surface of a topological insulator, where a surface spin-polarized current can flow upon illumination. Here, we used time- and angle-resolved photoelectron spectroscopy on the surface of Bi2Te3 to demonstrate that the magnitude of the surface photovoltage is almost doubled in optically aged samples, i.e., samples whose surface has been exposed to intense infrared light illumination. Our findings pave the way for optical control of the spin-polarized current by utilizing topological insulators. © 2018 Author(s).
Ключевые слова:	Energy efficiency; Photoelectron spectroscopy; Photovoltaic effects; Spin polarization; Tellurium compounds; Angle resolved photoelectron spectroscopy; Enhanced photovoltage; Low-power consumption; Optical control; Electric insulators; Topological insulators; Surface photovoltages; Spintronic device; Spin polarized currents; Bismuth compounds;
Издано:	2018
Физ. характеристика:	192104
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