Room-Temperature Quantum Transport Signatures in Graphene/LaAlO<sub>3</sub> /SrTiO<sub>3</sub> Heterostructures.

Jnawali, Giriraj; Huang, Mengchen; Hsu, Jen-Feng; Lee, Hyungwoo; Lee, Jung-Woo; Irvin, Patrick; Eom, Chang-Beom; D'Urso, Brian et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

High mobility graphene field-effect devices, fabricated on the complex-oxide heterostructure LaAlO<sub>3</sub> /SrTiO<sub>3</sub> , exhibit quantum interference signatures up to room temperature. The oxide material is believed to play a critical role in suppressing short-range and phonon contributions to scattering. The ability to maintain pseudospin coherence at room temperature holds promise for the realization of new classical and quantum information technologies.