Two-dimensional electron gas in a modulation-doped SrTiO{sub 3}/Sr(Ti, Zr)O{sub 3} heterostructure
- Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)
- Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)
A two-dimensional electron gas (2DEG) in SrTiO{sub 3} is created via modulation doping by interfacing undoped SrTiO{sub 3} with a wider-band-gap material, SrTi{sub 1−x}Zr{sub x}O{sub 3}, which is doped n-type with La. All layers are grown using hybrid molecular beam epitaxy. Using magnetoresistance measurements, we show that electrons are transferred into the SrTiO{sub 3}, and a 2DEG is formed. In particular, Shubnikov-de Haas oscillations are shown to depend only on the perpendicular magnetic field. Experimental Shubnikov-de Haas oscillations are compared with calculations that assume multiple occupied subbands.
- OSTI ID:
- 22218134
- Journal Information:
- Applied Physics Letters, Vol. 103, Issue 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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