title: Tunable Valley Polarization and Valley Orbital Magnetic Moment Hall Effect in Honeycomb Systems with Broken Inversion Symmetry.
abstract: In this Letter, a tunable valley polarization is investigated for honeycomb systems with broken inversion symmetry such as transition-metal dichalcogenide MX2 (M = Mo, W; X = S, Se) monolayers through elliptical pumping. Compared to circular pumping, elliptical pumping is a more universal and effective method to create coherent valley polarization. When two valleys of MX2 monolayers are doped or polarized, a novel anomalous Hall effect (called valley orbital magnetic moment Hall effect) is predicted. Valley orbital magnetic moment Hall effect can generate an orbital magnetic moment current without the accompaniment of a charge current, which opens a new avenue for exploration of valleytronics and orbitronics. Valley orbital magnetic moment Hall effect is expected to overshadow spin Hall effect and is tunable under elliptical pumping.
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Song
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.|State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.|School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China.
authors.forename: Ruge
authors.initials: R
authors.lastname: Quhe
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.
authors.forename: Shunquan
authors.initials: S
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Center of Quantum Matter, Beijing, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Collaborative Innovation Center of Quantum Matter, Beijing, China.|International Center for Quantum Materials, Peking University, Beijing, China.
authors.forename: Ji
authors.initials: J
authors.lastname: Feng
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.
authors.forename: Yingchang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Center of Quantum Matter, Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Lu
authors.affiliation: State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Center of Quantum Matter, Beijing, China.
authors.forename: Jinbo
authors.initials: J
authors.lastname: Yang