Katleho e Hlahlo ho Lipatlisiso Tsa Lintho Tse Peli Tse Hlahisoeng ke Mahlale!

Li-superlattices tsa Moiré ke meaho ea nako le nako e entsoeng ke liphahlo tse nyane lipakeng tsa lilatise tse peli kapa ho feta tse mahlakore a mabeli. Libakeng tsena tse ntlehali tsa moiré, boitšoaro ba elektroniki bo ka susumetsoa haholo, bo baka maemo a sa tloaelehang joalo ka li-insulators tsa quantum Hall. Leha ho le joalo, ho fihlela li-moiré superlattices ka li-angles tse sothehileng tse nyane e ntse e le phephetso bakeng sa lisebelisoa tse itseng. Sena se bohlokoa bakeng sa ho utloisisa le ho sebelisa litlamorao tsa khokahano ea elektrone, kaha khokahano ea elektrone hangata e bonahala haholo ka li-angles tse sothehileng. Leha ho le joalo, ka lebaka la mathata a liteko, thuto ea likamano tse matla tsamaisong ena e tsepamisitse maikutlo haholo-holo ho li-angles tse sothehileng kapa li-interlayer tse kholo tse sothehileng, tse haelloang ke taolo e hlophisitsoeng le lipatlisiso.

Ha a sebetsana le phephetso ena, Moprofesa Benjamin E. Feldman le sehlopha sa hae sa lipatlisiso Univesithing ea Stanford ba phatlalalitse pampiri ea morao-rao ea lipatlisiso e bitsoang "Mapping twist-tuned multiband topology in bilayer WSe2" koranteng ea "Saense." Bo-rasaense ba thehile sebopeho se sothehileng sa hoo e ka bang 1.23 ° ho bilayer tungsten diselenide 'me ba etsa litekanyo tsa tikoloho ea elektroniki ba sebelisa microscope ea elektronike e le 'ngoe ea transistor. Ba ile ba sibolla boteng ba lihlopha tse ngata tsa topological tse haufi le mokhoa ona oa ho sotha, ho bonts'a letoto la li-insulators tsa quantum anomalous Hall. Ka ho sebelisa sebaka sa motlakase sa lehae, ba boetse ba atlehile ho kenyelletsa phetoho ea karolo ea topological quantum. Thuto ena e sebetsana le phephetso ea ho finyella le ho ithuta li-superlattices tsa moiré ka li-angles tse nyenyane tse sothehileng, ho fana ka sethala se matla bakeng sa ho hlahloba ho eketsehileng kamano pakeng tsa likamano tse matla le thepa ea topological.