Kwizinto eziphathekayo ze-superconducting, umbane wombane uya kuhamba ngaphandle kokuchasana. Kukho izinto ezimbalwa ezisebenzayo zalo mcimbi; nangona kunjalo, imibuzo emininzi esisiseko ayikaphendulwa. UNjingalwazi uJustin Ye, intloko yeqela leFiziksi yeZixhobo eziNxibelele kwiDyunivesithi yaseGroningen, wafunda i-superconductivity kumqolo ophindwe kabini we-molybdenum disulfide kwaye wafumanisa amazwe amatsha e-superconducting. Iziphumo zapapashwa kwiphephancwadi Indalo Nanotechnology ngomhla wesi-4 kuNovemba.

I-Superconductivity ibonakaliswe kwiikristale ze-monolayer, umzekelo, i-molybdenum disulphide okanye i-tungsten disulfide enobunzima bee-athomu ezintathu nje. "Kuzo zombini i-monolayers, kukho uhlobo olukhethekileyo lwe-superconductivity apho i-magnetic field yangaphakathi ikhusela i-superconducting state kumhlaba wangaphandle wamagnetic," uyachaza. I-superconductivity eqhelekileyo iyanyamalala xa intsimi enkulu yangaphandle yamagnetic isetyenziswa, kodwa le Ising superconductivity ikhuselwe ngamandla. Nangona kwintsimi yamagnetic enamandla kakhulu eYurophu, enegunya le-37 Tesla, i-superconductivity kwi-tungsten disulfide ayibonisi naluphi na utshintsho. Nangona kunjalo, nangona kukuhle ukuba nokhuseleko olunjalo oluluqilima, umngeni olandelayo kukufumana indlela yokulawula le mpembelelo yokukhusela, ngokufaka intsimi yombane.

Amazwe amatsha e-superconducting

U-Ye kunye nabasebenzisana naye bafunde umaleko ophindwe kabini we-molybdenum disulfide: "Kolu lungelelwaniso, unxibelelwano phakathi kwala maleko mabini kudala amazwe amatsha aphezulu." Udale umaleko ophindwe kabini omisiweyo, ngolwelo lwe-ayoni kumacala omabini anokuthi asetyenziswe ukwenza indawo yombane ngapha kwebilayer. "Kwi-monolayer yomntu ngamnye, ibala elinjalo liya kuba li-asymmetric, kunye nee-ion ezintle kwelinye icala kunye neentlawulo ezingalunganga ezibangelwa kwelinye. Nangona kunjalo, kwi-bilayer, sinokuba nexabiso elifanayo lentlawulo elenziwe kuzo zombini ii-monolayers, ukudala inkqubo ye-symmetrical, "Ye uyachaza. Intsimi yombane eyenziwe ngoko ingasetyenziselwa ukutshintsha i-superconductivity kunye nokucima. Oku kuthetha ukuba i-superconducting transistor yadalwa enokuthi ifakwe kwisango nge-ionic liquid.

Kwinqanaba eliphindwe kabini, ukukhuselwa kwe-Ising kwiinkalo zangaphandle zamagnetic kuyanyamalala. "Oku kwenzeka ngenxa yotshintsho kwintsebenziswano phakathi kwezi zimbini." Nangona kunjalo, intsimi yombane inokubuyisela ukhuseleko. "Inqanaba lokhuseleko liba ngumsebenzi wokuba usifaka kangakanani na isixhobo."

Izibini zeCooper

Ngaphandle kokudala i-superconducting transistor, Wena kunye noogxa bakhe benze enye into enomdla. Ngomnyaka we-1964, i-superconducting state ekhethekileyo yaqikelelwa ukuba ikhona, ebizwa ngokuba yi-FFLO state (ethiywe emva kososayensi ababeyiqikelele kwangaphambili: uFulde, uFerrell, uLarkin no-Ovchinnikov). Kwi-superconductivity, ii-electron zihamba ngambini kumacala achaseneyo. Ekubeni bahamba ngesantya esifanayo, ezi zibini Cooper abe umfutho kinetic iyonke zero. Kodwa kwimeko yeFFLO, kukho umahluko omncinci wesantya kwaye ngoko ke umfutho wekinetic awukho zero. Ukuza kuthi ga ngoku, le meko ayizange ifundwe ngokufanelekileyo kwimifuniselo.

“Siye sadibana phantse nazo zonke iimfuneko zokulungiselela imeko yeFFLO kwisixhobo sethu,” utshilo uYe. “Kodwa urhulumente ubuthathaka kakhulu kwaye uchatshazelwa kakhulu kungcoliseko olukumphezulu wezinto zethu. Ke ngoko, siya kudinga ukuphinda amalinge ngeesampulu ezicocekileyo. ”

Ngebilayer emisiweyo ye-molybdenum disulfide, Wena kunye nabasebenzisana nabo banazo zonke izithako ezifunekayo ukufunda amanye amazwe akhethekileyo e-superconducting. "Le yinzululwazi esisiseko enokuthi izise iinguqu zengqondo."