金屬小顆粒超導(dǎo)電性研究
發(fā)布時(shí)間：2018-05-20 02:30
本文選題：兩帶Richardson模型 + 隨機(jī)矩陣?yán)碚?/strong> ； 參考：《低溫物理學(xué)報(bào)》2017年02期
【摘要】：采用兩帶Richardson模型,用隨機(jī)矩陣?yán)碚摲椒ㄑ芯苛司哂懈咚鼓芗壏植嫉慕饘傩☆w粒的超導(dǎo)電性.結(jié)果表明,帶間相互作用有利于金屬小顆粒的超導(dǎo)電性.對于每一個(gè)自旋S基態(tài),都存在著對應(yīng)的超導(dǎo)臨界尺寸lc,當(dāng)金屬小顆粒的線度小于lc時(shí),超導(dǎo)電性消失;S越大,lc越大;對于S≠0的自旋基態(tài),只有超導(dǎo)衰減現(xiàn)象,對于S=0的自旋基態(tài),隨著顆粒尺寸的減小,先出現(xiàn)超導(dǎo)增強(qiáng)現(xiàn)象,隨后出現(xiàn)超導(dǎo)衰減現(xiàn)象,理論結(jié)果與實(shí)驗(yàn)符合.
[Abstract]:The superconductivity of small metal particles with Gao Si energy level distribution is studied by using the two-band Richardson model and the stochastic matrix theory. The results show that the interband interaction is beneficial to the superconductivity of small metal particles. For each spin S ground state, there is a corresponding superconducting critical size (LC). When the linearity of a small metal particle is less than lc, the superconductivity disappears and the superconductivity disappears, and for the spin ground state with S 鈮，
本文編號：1912812
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