Chen, Ming-WeiKim, HokwonOvchinnikov, DmitryKuc, AgnieszkaHeine, ThomasRenault, OlivierKis, Andras2018-01-252018-01-252018-01-25201810.1038/s41699-017-0047-xhttps://infoscience.epfl.ch/handle/20.500.14299/144453Large-grain MBE-grown GaSe on GaAs with a Mexican hat-like valence band dispersiontext::journal::journal article::research article