title: Graphene homojunction: closed-edge bilayer graphene by pseudospin interaction.
abstract: Depending on the sublattices they are propagated in, low-energy electrons or holes are labeled with pseudospin. By engineering pseudospin interactions, we propose that two critical features of a junction, i.e., band gap opening and spatial charge separation, can be realized in graphene layers with proper stacking. We also demonstrate theoretically that such a graphene diode may play a role in future pseudospin electronics such as for harvesting solar energy.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. zexiang@ntu.edu.sg.
authors.forename: Jiaxu
authors.initials: J
authors.lastname: Yan
authors.affiliation: College of Physics, Jilin University, Changchun 130012, People's Republic of China.
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. zexiang@ntu.edu.sg.
authors.forename: Da
authors.initials: D
authors.lastname: Zhan
authors.affiliation: Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China. liulei@ciomp.ac.cn.
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.affiliation: Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China. liulei@ciomp.ac.cn.
authors.forename: Dezhen
authors.initials: D
authors.lastname: Shen
authors.affiliation: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
authors.forename: Jer-Lai
authors.initials: JL
authors.lastname: Kuo
authors.affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Shoushun
authors.initials: S
authors.lastname: Chen
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. zexiang@ntu.edu.sg.
authors.forename: Zexiang
authors.initials: Z
authors.lastname: Shen