Fabrication and characterization of nanopatterned LaAlO3/SrTiO3 heterostructures
| Autor: | Sang Keun Seung, Joon Sung Lee, Jung-Won Chang, Lkhagvasuren Baasandorj, Jinhee Kim, Hyunho Noh, Soon Gul Lee, Jong Hyun Song, Yong-Joo Doh |
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| Rok vydání: | 2013 |
| Předmět: |
Fabrication
Materials science Spintronics Condensed matter physics business.industry General Physics and Astronomy Heterojunction Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Etching (microfabrication) Optoelectronics business Fermi gas Electron-beam lithography Universal conductance fluctuations |
| Zdroj: | Journal of the Korean Physical Society. 63:236-240 |
| ISSN: | 1976-8524 0374-4884 |
| DOI: | 10.3938/jkps.63.236 |
| Popis: | We report the fabrication of nanopatterned conduction channels and electrical transport of a two-dimensional electron gas formed at a LaAlO3/SrTiO3 heterointerface. The nanoscale channels are formed by electron beam lithography and Ar-ion etching. The negative magnetoconductance data observed at low temperature are attributed to the weak antilocalization effect due to the strong spin-orbit interaction inherent in the electron gas at the heterointerface whereas the conductance fluctuations are caused by quantum interference between the electron wavefunctions. The gatedependent characteristic parameters, obtained using the Maekawa-Fukuyama model, reveal that the spin-orbit interaction in the nanopatterned metal-oxide heterostructure is gate-tunable, which will be useful for building spintronic devices. |
| Databáze: | OpenAIRE |
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