title: Topological, Valleytronic, and Optical Properties of Monolayer PbS.
abstract: A PbS monolayer is demonstrated to be a novel platform for topological, valleytronic, and optical phenomena. Compressive strain can turn the trivial monolayer into a topological insulator. Optical pumping can facilitate charge, spin, and valley Hall effects tunable by external strain and light ellipticity. Similar results apply to other IV-VI semiconductors.
authors.affiliation: Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Wan
authors.affiliation: Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, China.
authors.forename: Yugui
authors.initials: Y
authors.lastname: Yao
authors.affiliation: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH, 43403, USA.
authors.forename: Liangfeng
authors.initials: L
authors.lastname: Sun
authors.affiliation: Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing, 100081, China.|Department of Physics, University of Texas at Dallas, Richardson, TX, 75080, USA.
authors.forename: Cheng-Cheng
authors.initials: CC
authors.lastname: Liu
authors.affiliation: Department of Physics, University of Texas at Dallas, Richardson, TX, 75080, USA.
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
keywords: PbS; monolayers; optical; topological