Ib pawg ntawm cov kws tshawb fawb los ntawm lub koom haum Paul Scherrer (Villigen, Switzerland) thiab ETH Zurich tau tshawb xyuas thiab lees paub qhov kev ua haujlwm ntawm qhov tshwm sim nthuav dav ntawm cov hlau nplaum ntawm qib atomic. Tus cwj pwm atypical ntawm cov hlau nplaum nyob rau theem ntawm nanometer pawg tau kwv yees 60 xyoo dhau los los ntawm Soviet thiab Asmeskas tus kws kho mob Igor Ekhielevich Dzyaloshinskii. Cov kws tshawb fawb hauv Switzerland tau tsim cov qauv zoo li no thiab tam sim no kwv yees lub neej yav tom ntej zoo rau lawv, tsis yog tsuas yog cov kev daws teeb meem cia, tab sis kuj, txawv heev, hloov pauv rau transistors hauv processors nrog nanoscale cov ntsiab lus.
Nyob rau hauv peb lub ntiaj teb no, lub compass koob ib txwm taw rau sab qaum teb, uas ua rau nws muaj peev xwm paub txoj kev mus rau sab hnub tuaj thiab sab hnub poob. Cov hlau nplaum sib txawv polarity nyiam thiab cov hlau nplaum unipolar repel. Nyob rau hauv lub microcosm ntawm lub teev ntawm ob peb atoms, nyob rau hauv tej yam kev mob, sib nqus txheej txheem tshwm sim txawv. Nyob rau hauv cov ntaub ntawv ntawm kev sib cuam tshuam luv luv ntawm cobalt atoms, piv txwv li, cov cheeb tsam nyob sib ze ntawm magnetization ze rau sab qaum teb-oriented atoms yog taw qhia rau sab hnub poob. Yog hais tias lub orientation hloov mus rau sab qab teb, ces cov atoms nyob rau hauv cov cheeb tsam nyob sib ze yuav hloov lub orientation ntawm magnetization mus rau sab hnub tuaj. Dab tsi yog qhov tseem ceeb, cov tswj atoms thiab cov qhev atoms nyob hauv tib lub dav hlau. Yav dhau los, cov txiaj ntsig zoo sib xws tau pom tsuas yog hauv cov txheej txheem atomic vertically (ib qho saum toj no). Qhov chaw tswj thiab tswj cov cheeb tsam hauv tib lub dav hlau qhib txoj hauv kev rau kev tsim cov kev suav thiab kev khaws cia architectures.
Cov kev taw qhia ntawm kev sib nqus ntawm cov txheej txheem tswj tau tuaj yeem hloov pauv ob qho tib si los ntawm electromagnetic teb thiab los ntawm tam sim no. Siv tib lub hauv paus ntsiab lus, transistors yog tswj. Nws tsuas yog nyob rau hauv cov ntaub ntawv ntawm nanomagnets uas lub architecture yuav tau txais ib tug impetus rau txoj kev loj hlob ob qho tib si nyob rau hauv cov nqe lus ntawm productivity, thiab nyob rau hauv cov nqe lus ntawm kev txuag noj thiab txo cov cheeb tsam ntawm cov kev daws teeb meem (txo lub scale ntawm cov txheej txheem technical). Nyob rau hauv cov ntaub ntawv no, ua ke magnetization zones, tswj los ntawm kev hloov cov magnetization ntawm lub ntsiab zones, yuav ua hauj lwm raws li lub rooj vag.
Qhov tshwm sim ntawm kev sib txuas sib nqus tau tshwm sim hauv kev tsim tshwj xeeb ntawm array. Txhawm rau ua qhov no, txheej txheej cobalt 1,6 nm tuab tau nyob ib puag ncig saum toj thiab hauv qab los ntawm cov substrates: platinum hauv qab, thiab txhuas oxide saum toj no (tsis pom hauv daim duab). Yog tsis muaj qhov no, qhov cuam tshuam rau sab hnub poob thiab sab qab teb sab hnub tuaj magnetization tsis tshwm sim. Tsis tas li ntawd, qhov tshwm sim pom tuaj yeem ua rau muaj qhov tshwm sim ntawm hluavtaws antiferromagnets, qhov no tseem tuaj yeem qhib txoj hauv kev rau cov thev naus laus zis tshiab rau kev kaw cov ntaub ntawv.
Tau qhov twg los: 3d xov.ru