Iterambere ryakozwe mubushakashatsi bwa Ultray Icyerekezo cya Weil Quasiparticles igenzurwa naba laze

Iterambere ryakozwe mubushakashatsi bwa Ultray Motion ya Weil Quasiparticles igenzurwa nalasers

Mu myaka yashize, ubushakashatsi bwubushakashatsi nubushakashatsi kuri leta ya Topologiya hamwe nibikoresho bya kane bya topologiki byahindutse ingingo ishyushye mumurima wa physics. Nkigitekerezo gishya cyibibazo, gahunda ya topologiya, kimwe na symmetrie, ni igitekerezo cyibanze muburyo bwa fiziki. Gusobanukirwa byimazeyo topologiya bifitanye isano nibibazo byibanze muburyo bwa fiziki, nkimiterere yibanze ya elegitoroniki yaQuanim Icyiciro. Mu bikoresho bya topologiya, guhuza hagati yimyenda myinshi yubwisanzure, nka electron, fonons na spin, bigira uruhare rukomeye mugusobanukirwa no kugenzura imitungo. Indashyikirwa ry'umucyo rirashobora gukoreshwa mu gutandukanya imikoranire itandukanye no gukoresha uko ibintu bimeze, kandi amakuru ajyanye n'imiterere y'ibanze y'umubiri, inzibacyuho y'ibanze, n'inzibacyuho y'icyiciro, kandi ibihugu bishya birashobora kuboneka noneho. Kugeza ubu, umubano uri hagati yimyitwarire ya macroscopique yibikoresho bya topologiya bitwarwa numurima woroheje kandi imiterere ya atomekopi hamwe nuburyo bwa elegitoronike bwabaye intego yubushakashatsi.

Imyitwarire ya Phofetericlic yibikorwa bya topologiya bifitanye isano rya bugufi nuburyo bwa elegitoronike ya elegitoroniki. Kubyuma bya topologi, birashima hafi yitsinda ryumva cyane imikorere yimibavu. Ubushakashatsi bwatanzwe na Opricar Phenomena mubyuma bya Topologiya birashobora kudufasha kumva neza imitungo yimiryango ishimishije ya sisitemu, kandi biteganijwe ko izi ngaruka zishobora gukoreshwa mu gukoraIbikoresho bya Optiquen'imiterere y'ingabo z'izuba, itanga ibyifuzo bifatika mugihe kizaza. Kurugero, muri weyl semi-ibyuma byumucyo, bikurura photon urumuri rwibiti bizatera urujijo, kandi kugirango rugaragaze kubungabunga uruzitiro rwa WIYL COER, ruzakwirakwizwa mu buryo bw'umucyo wa Weyl Colayeli Colayeli Colayeli Colayeli;

Ubushakashatsi bwa tekinike ya Optricar chenomena yibikoresho bya toologiya mubisanzwe byemeza uburyo bwo guhuza imiterere yibintu hamwe nibisesengura. Ariko, ubu buryo bufite inenge zimwe: ntizibura amakuru nyayo yinkingi zishimishije mumwanya muto hamwe numwanya nyabyo, kandi ntigishobora kwerekana uburyo butaziguye hamwe nuburyo bwo gutahura igihe. Guhuza hagati ya electron-fonon na fono-fonons-fonons ntibishobora gusuzumwa. Kandi iki ni ngombwa kugirango wice zimwe zicyiciro. Byongeye kandi, iyi isesengura ryibikoresho rishingiye ku nyigisho yo guhagarika ntishobora guhangana ninzira yumubiri munsi yumurima ukomeye. Igihe gitunzwe nigihe gitunzwe na molecular imbaraga (100 md) zishingiye kumahame yambere irashobora gukemura ibibazo byavuzwe haruguru.

Vuba aha, uyobowe n'umushakashatsi Meng Sheng, Umushakashatsi wa Postdoctol Guan Mengxue na Porofeseri Itsinda ry'ikoranabuhanga rya Leta ya Sisiata Dynamics Sinulation Software TDAP. Ibiranga ibisubizo bya quastipticle of ultrafast laser muburyo bwa kabiri bwa weyl semi-icyuma cyambere.

Byaremewe ko gushimira abatwara umutekano hafi yicyatsi bigenwa nibisobanuro bya atome, bitandukanijwe n'amategeko asanzwe yo gushushanya kugirango ahindure icyerekezo cyumucyo na photon (Ishusho 2).

Kwishima kwa abatwara ibitero bitera amafoto mubyerekezo bitandukanye mumwanya nyabyo, bigira ingaruka ku cyerekezo na symemetrie urupapuro rwa interlayer cya sisitemu. Kubera ko ibiranga ibyaka bya Wte2, nkumubare wingingo ya Weyl hamwe nurwego rwo gutandukana hamwe nubwinshi bwa sisitemu bizazana imyitwarire itandukanye ya Weyl quastarticles kumurongo wa topologiya. Rero, ubushakashatsi butanga igishushanyo gisobanutse cyimpinduka zicyiciro cya fototopologiya (Ishusho 4).

Ibisubizo byerekana ko imivugo yuburwayi butwara hafi ya Weyl ingingo igomba kwishyurwa, kandi imitungo ya atome yimikorere ya Wave igomba gusesengurwa. Ingaruka zabyo ebyiri zirasa ariko uburyo buragaragara, biragaragara ko bitandukanye, bitanga ishingiro ryo gusobanura ubuke bwingingo ya Weyl. Byongeye kandi, uburyo bwo kubara bwafashwe muri ubu bushakashatsi burashobora gusobanukirwa cyane imikoranire igoye hamwe nimyitwarire idahwitse kumwanya wa atome kandi hagaragazwa na microphysical.

Ibisubizo biri mu kinyamakuru itumanaho ryamakuru. Umurimo w'ubushakashatsi ushyigikiwe na gahunda y'igihugu ishinzwe ubushakashatsi na gahunda y'igihugu ishinzwe ubushakashatsi na gahunda y'igihugu, umushinga wa siyansi isanzwe ya siyanse hamwe n'umushinga w'icyitegererezo cy'ibikorwa (icyiciro b) cy'amashuri y'Igishinwa.

Igishushanyo.1.A. Guhitamo crpality Amategeko kugirango weyl afite amanota hamwe nikimenyetso cyiza cya chiltique (χ = + 1) munsi yumucyo uzengurutse; Guhitamo gutoranya kubera injinya ya Atome kuri weyl ingingo ya B. χ = + 1 mu mucyo umucyo wa polarize

Igishushanyo 2. Imiterere ya Atomic Igishushanyo cya A, TD-WTE2; b. Inyubako zitsinda hafi ya Ferimi; . d. Kwongerera imiterere yitsinda kubyerekezo bya gamma-x

Igishushanyo C. Kugereranya hagati yo kwigana no kureba ubushakashatsi; de: Ubwihindurize bwa sisitemu n'umwanya, umubare nurwego rwo gutandukana amanota abiri ya Weyl hafi ya WZ = 0 indege

Igishushanyo 4. Inzibacyuho yicyiciro cya Photo-Wte2 kuri Stricerly Polarized Ingufu za Photon ingufu (?) Ω) nubuyobozi bwihuse (θ) igishushanyo