Electric field effects in graphene/LaAlO3/SrTiO3 heterostructures and nanostructures

Autor: Mengchen Huang, Giriraj Jnawali, Jen-Feng Hsu, Shonali Dhingra, Hyungwoo Lee, Sangwoo Ryu, Feng Bi, Fereshte Ghahari, Jayakanth Ravichandran, Lu Chen, Philip Kim, Chang-Beom Eom, Brian D’Urso, Patrick Irvin, Jeremy Levy
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: APL Materials, Vol 3, Iss 6, Pp 062502-062502-7 (2015)
Druh dokumentu: article
ISSN: 2166-532X
DOI: 10.1063/1.4916098
Popis: We report the development and characterization of graphene/LaAlO3/SrTiO3 heterostructures. Complex-oxide heterostructures are created by pulsed laser deposition and are integrated with graphene using both mechanical exfoliation and transfer from chemical-vapor deposition on ultraflat copper substrates. Nanoscale control of the metal-insulator transition at the LaAlO3/SrTiO3 interface, achieved using conductive atomic force microscope lithography, is demonstrated to be possible through the graphene layer. LaAlO3/SrTiO3-based electric field effects using a graphene top gate are also demonstrated. The ability to create functional field-effect devices provides the potential of graphene-complex-oxide heterostructures for scientific and technological advancement.
Databáze: Directory of Open Access Journals