Ukuphumelela kuPhando lweZizinto ezimacala-mbini Otyhilwe yiNzululwazi!
Ii-moiré superlattices zizakhiwo zamaxesha athile ezenziwe ngokufuduswa okuncinci phakathi kweeleti ezine-dimensional ezimbini okanye ngaphezulu. Kwezi moiré superlattices, indlela yokuziphatha ye-elektroniki inokuphenjelelwa ngamandla, ibangele iimeko ezingaqhelekanga ezifana ne-quantum Hall insulators. Nangona kunjalo, ukufezekisa i-moiré superlattices kwii-engile ezincinci zokujija kuhlala kungumngeni kwizinto ezithile. Oku kubalulekile ekuqondeni nasekusebenziseni iziphumo zolungelelwaniso lwe-electron, njengoko ulungelelwaniso lwe-electron luhlala lubonakala kakhulu kwii-engile ezincinci zokujija. Nangona kunjalo, ngenxa yobunzima bokulinga, uphononongo lolungelelwaniso olomeleleyo kwezi nkqubo lujolise ikakhulu kwii-engile ezithile ezijijekileyo okanye ukugqwetheka okukhulu kwe-interlayer, ukunqongophala kolawulo olucwangcisiweyo kunye nophando.
Ukujongana nalo mngeni, uNjingalwazi uBenjamin E. Feldman kunye neqela lakhe lophando kwiYunivesithi yaseStanford bapapashe iphepha lophando lwakutsha nje elinesihloko esithi "Mapping twist-tuned multiband topology in bilayer WSe2" kwijenali "Science." Izazinzulu zenze ulwakhiwo olujijekileyo olumalunga ne-1.23° kwi-bilayer tungsten diselenide kwaye lwenza imilinganiselo yoxinzelelo lwe-elektroniki lwasekhaya lisebenzisa i-scanning single-electron transistor microscope. Baye bafumanisa ubukho beebhendi ezininzi ze-topological kufutshane nale angle ijikajikayo, ebonisa uthotho lwe-quantum anomalous Hall insulators. Ngokusebenzisa indawo yombane yendawo, baye bakhuthaza ngempumelelo inguqu yesigaba se-topological quantum. Olu phononongo lujongana nomngeni wokufezekiswa kunye nokufunda i-moiré superlattices kwii-angles ezijijekileyo ezincinci, ukubonelela ngeqonga elinamandla lokuphonononga ngakumbi unxibelelwano phakathi kolungelelwaniso oluqinileyo kunye neempawu ze-topological.