I loko o nā mea superconducting, e kahe ana kahi au uila me ke kū ʻole. He kakaikahi wale no ka hoohana ana i keia ano; akā naʻe, nui nā nīnau kumu i koe ʻaʻole i pane ʻia. Ua aʻo ʻo Polofesa Justin Ye, ke poʻo o ka hui Device Physics of Complex Materials ma ke Kulanui o Groningen, i ka superconductivity i kahi papa pālua o ka molybdenum disulfide a ua ʻike i nā mokuʻāina superconducting hou. Ua paʻi ʻia nā hopena ma ka puke pai Nature Nanotechnology ma 4 Nowemapa.

Ua hōʻike ʻia ka superconductivity i loko o nā kristal monolayer o, no ka laʻana, molybdenum disulphide a i ʻole tungsten disulfide i loaʻa ka mānoanoa o ʻekolu mau ʻātoma wale nō. "I loko o nā monolayers ʻelua, aia kahi ʻano superconductivity kūikawā kahi e pale ai ke kahua magnetic kūloko i ke kūlana superconducting mai nā māla magnetic waho," wehewehe ʻo Ye. Nalo ka superconductivity maʻamau i ka wā e hoʻohana ʻia ai kahi māla magnetic waho nui, akā pale ikaika kēia Ising superconductivity. ʻOiai i loko o ke kahua magnetic static ikaika loa ma ʻEulopa, nona ka ikaika o 37 Tesla, ʻaʻole hōʻike ka superconductivity i ka tungsten disulfide i kahi loli. Eia nō naʻe, ʻoiai he mea maikaʻi loa ka loaʻa ʻana o ia ʻano pale ikaika, ʻo ka luʻi hou e ʻimi i kahi ala e hoʻomalu ai i kēia hopena pale, ma ka hoʻohana ʻana i kahi kahua uila.

Nā mokuʻāina superconducting hou

Ua aʻo ʻo ʻoe a me kāna mau hoa hana i kahi papa pālua o ka molybdenum disulfide: "Ma kēlā hoʻonohonoho, hana ka pilina ma waena o nā papa ʻelua i nā mokuʻāina superconducting hou." Ua hana ʻoe i kahi papa ʻelua i hoʻokuʻu ʻia, me kahi wai ionic ma nā ʻaoʻao ʻelua i hiki ke hoʻohana ʻia e hana i ke kahua uila ma waena o ka bilayer. "Ma ka monolayer hoʻokahi, e like ʻole kēlā kahua, me nā ion maikaʻi ma kekahi ʻaoʻao a me nā hoʻopiʻi maikaʻi ʻole i hoʻokomo ʻia ma kekahi ʻaoʻao. Eia naʻe, i ka bilayer, hiki iā mākou ke loaʻa ka nui o ka uku i hoʻokomo ʻia ma nā monolayers ʻelua, e hana ana i kahi ʻōnaehana symmetrical, "wehewehe ʻo Ye. Hiki ke hoʻohana ʻia ke kahua uila i hana ʻia e hoʻololi i ka superconductivity a i ʻole. ʻO ia ke ʻano o kahi transistor superconducting i hana ʻia i hiki ke hoʻopaʻa ʻia ma o ka wai ionic.

Ma ka papa ʻelua, nalo ka pale Ising i nā māla magnetic waho. "Hiki kēia ma muli o nā loli i ka pilina ma waena o nā papa ʻelua." Eia naʻe, hiki i ke kahua uila ke hoʻihoʻi i ka pale. "ʻO ke kiʻekiʻe o ka pale e lilo i mea hana no ka ikaika o kou puka ʻana i ka hāmeʻa."

Cooper pai

Ma waho aʻe o ka hana ʻana i kahi transistor superconducting, ua hana ʻo Ye a me kāna mau hoa hana i kahi ʻike hoihoi. I ka makahiki 1964, ua wānana ʻia kahi mokuʻāina superconducting kūikawā, i kapa ʻia ʻo FFLO state (i kapa ʻia ma hope o nā ʻepekema nāna i wānana: Fulde, Ferrell, Larkin a me Ovchinnikov). I ka superconductivity, hele pālua nā electrons ma nā ʻaoʻao ʻē aʻe. Ma muli o ko lākou holo like ʻana, loaʻa i kēia mau hui Cooper ka huina kinetic momentum o ka ʻole. Akā ma ka moku'āina FFLO, aia kahi ʻokoʻa wikiwiki a no laila ʻaʻole ʻaʻole ʻole ka manawa kinetic. I kēia manawa, ʻaʻole i aʻo pono ʻia kēia mokuʻāina i nā hoʻokolohua.

"Ua hālāwai mākou i nā mea e pono ai no ka hoʻomākaukau ʻana i ka mokuʻāina FFLO i kā mākou hāmeʻa," wahi a Ye. "Akā ua palupalu loa ka moku'āina a ua hoʻopilikia nui ʻia e nā mea ʻino ma luna o kā mākou mea. No laila, pono mākou e hana hou i nā hoʻokolohua me nā mea hoʻomaʻemaʻe maʻemaʻe.

Me ka bilayer hoʻokuʻu ʻia o ka molybdenum disulfide, loaʻa iā ʻoe a me nā hoa hana nā mea āpau e pono ai ke aʻo ʻana i kekahi mau mokuʻāina superconducting kūikawā. "He ʻepekema kumu maoli kēia e lawe mai iā mākou i nā loli manaʻo."