Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene

• Published in: Nature physics Vol. 11; no. 12; pp. 1032 - 1036
• Main Authors: Shimazaki, Y., Yamamoto, M., Borzenets, I. V., Watanabe, K., Taniguchi, T., Tarucha, S.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.12.2015; Nature Publishing Group
• Subjects: 136/117; 142/126; 639/766/119/1000/1018; 639/766/119/995; 639/925/918/1052; Atomic; Bilayers; Carrier density; Classical and Continuum Physics; Complex Systems; Condensed Matter Physics; Conduction bands; Control systems; Crystal defects; Crystal lattices; Crystal structure; Curvature; Electric fields; Electronic systems; Electronics; Energy bands; Fruits; Graphene; Insulation; letter; Magnetic fields; Mathematical and Computational Physics; Molecular; Optical and Plasma Physics; Physics; Quantum physics; Room temperature; Symmetry; Theoretical; Topology; Valence band

Bilayer graphene can host topological currents that are robust against defects and are associated with the electron valleys. It is now shown that electric fields can tune this topological valley transport over long distances at room temperature. The field of ‘Valleytronics’ has recently been attract...