N'ime ihe ndị na-arụ ọrụ nke ọma, ọkụ eletrik ga-asọba n'enweghị ihe mgbochi ọ bụla.E nwere nnọọ ole na ole bara uru ngwa nke a onu;Otú ọ dị, ọtụtụ ajụjụ ndị bụ isi ka a na-azabeghị.Onye mmekọ Prọfesọ Justin Ye, onye isi otu akụrụngwa Physics of Complex Materials na Mahadum Groningen, mụọ superconductivity na okpukpu abụọ nke molybdenum disulfide wee chọpụta steeti ọhụrụ superconducting.E bipụtara nsonaazụ ya na akwụkwọ akụkọ Nature Nanotechnology na 4 Nọvemba.

Egosiputara ihe nlebara anya na kristal monolayer, dịka ọmụmaatụ, molybdenum disulphide ma ọ bụ tungsten disulfide nke nwere ọkpụrụkpụ nke naanị atọm atọ."N'ime ma monolayers, e nwere ụdị pụrụ iche nke superconductivity nke ebe ndọta dị n'ime na-echebe ọnọdụ na-eme ihe n'ike site na oghere magnetik mpụga," Ye na-akọwa.Superconductivity nkịtị na-apụ n'anya mgbe etinyere nnukwu oghere ndọta dị n'èzí, mana a na-echebekwa nke ọma Ising superconductivity.Ọbụna na mpaghara magnetik static kachasị ike na Europe, nke nwere ike nke 37 Tesla, superconductivity na tungsten disulfide adịghị egosi mgbanwe ọ bụla.Otú ọ dị, ọ bụ ezie na ọ dị mma ịnweta nchebe siri ike dị otú ahụ, ihe ịma aka na-esote bụ ịchọta ụzọ isi chịkwaa mmetụta nchebe a, site n'itinye ọkụ eletrik.

New superconducting steeti

Ye na ndị ya na ha na-emekọ ihe mụọ molybdenum disulfide okpukpu abụọ: "N'ime nhazi ahụ, mmekọrịta dị n'etiti akwa abụọ ahụ na-emepụta steeti ọhụrụ na-enweghị atụ."Ị mepụtara oyi akwa okpukpu abụọ kwụsịtụrụ, ya na mmiri mmiri ionic n'akụkụ abụọ nke enwere ike iji mepụta oghere eletrik n'ofe bilayer."N'ime monolayer onye ọ bụla, ubi dị otú ahụ ga-adị asymmetric, yana ions dị mma n'otu akụkụ yana ebubo na-adịghị mma n'akụkụ nke ọzọ.Otú ọ dị, na bilayer, anyị nwere ike ịnweta otu ụgwọ ego a na-ebute na monolayers abụọ, na-emepụta usoro symmetrical, "Ye na-akọwa.Enwere ike iji igwe eletrik nke emepụtara wee gbanye ma gbanyụọ superconductivity.Nke a pụtara na e kere transistor na-arụ ọrụ nke ọma nke enwere ike ịgbanye site na mmiri ionic.

Na oyi akwa okpukpu abụọ, nchebe Ising megide oghere magnetik mpụga na-apụ n'anya."Nke a na-eme n'ihi mgbanwe na mmekọrịta dị n'etiti akwa abụọ."Otú ọ dị, ọkụ eletrik nwere ike weghachite nchebe."Ọkwa nke nchebe na-aghọ ọrụ nke otu i siri gbado ngwaọrụ ahụ."

Cooper ụzọ abụọ

Ewezuga imepụta transistor na-arụ ọrụ nke ọma, Ye na ndị ọrụ ibe ya mere nleba anya ọzọ na-adọrọ mmasị.N'afọ 1964, e buru amụma na ọ ga-adị, nke a na-akpọ steeti FFLO (aha ndị ọkà mmụta sayensị buru amụma ya: Fulde, Ferrell, Larkin na Ovchinnikov).Na superconductivity, eletrọn na-eme njem na abụọ n'akụkụ nke ọzọ.Ebe ọ bụ na ha na-eme njem n'otu ọsọ ahụ, ụzọ abụọ Cooper ndị a nwere ngụkọta kinetic nke efu.Mana na steeti FFLO, enwere obere ihe dị iche na-agba ọsọ ya mere ike nke kinetic abụghị efu.Ka ọ dị ugbu a, amụbeghị steeti a nke ọma na nnwale.

"Anyị ezutewo ihe fọrọ nke nta ka ọ bụrụ ihe niile achọrọ iji kwado steeti FFLO na ngwaọrụ anyị," ka Ye na-ekwu."Mana steeti ahụ na-esighi ike ma na-emetụta ya nke ukwuu site na mmetọ dị n'elu ihe anyị.Ya mere, anyị ga-achọ ka anyị na-emegharị nnwale ahụ site na iji nlele dị ọcha. "

Site na bilayer nke molybdenum disulfide kwụsịtụrụ, Ye na ndị na-arụkọ ọrụ nwere ihe niile achọrọ iji mụọ ụfọdụ steeti pụrụ iche pụrụ iche."Nke a bụ sayensị bụ isi nke nwere ike iwetara anyị mgbanwe echiche."