期刊
APPLIED PHYSICS LETTERS
卷 104, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4875796
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资金
- ONR EXEDE MURI [ONR N00014-12-0976]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1126455] Funding Source: National Science Foundation
We demonstrate charge modulation of over 10(14) cm(-2) electrons in a two-dimensional electron gas formed in SrTiO3/GdTiO3 inverted heterostructure field-effect transistors. Increased charge modulation was achieved by reducing the effect of interfacial region capacitances through thick SrTiO3 cap layers. Transport and device characteristics of the heterostructure field-effect transistors were found to match a long channel field effect transistor model. SrTiO3 impurity doped metal-semiconductor field effect transistors were also demonstrated with excellent pinch-off and current density exceeding prior reports. The work reported here provides a path towards oxide-based electronics with extreme charge modulation exceeding 10(14) cm(-2). (C) 2014 AIP Publishing LLC.
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