本文選題：能谷自由度 + 二維材料　； 參考：《物理》2017年05期

【摘要】：電子的電荷自由度與自旋自由度是現(xiàn)代電子器件的基礎(chǔ)核心之一。隨著二維材料,尤其是二維過(guò)渡族硫化物(TMDCs)的研究深入,另一個(gè)自由度——能谷——也引起了人們極大的研究興趣。由于TMDCs中自旋與能谷的強(qiáng)耦合,自旋(能谷)可以通過(guò)能谷(自旋)方便地進(jìn)行調(diào)控和探測(cè),為電子自旋和能谷的相關(guān)領(lǐng)域提供了新的手段和方法。文章首先對(duì)能谷自由度以及TMDCs中自旋與能谷的強(qiáng)耦合進(jìn)行了介紹,然后介紹基于圓偏振光激發(fā)和自旋注入兩種方式進(jìn)行的自旋調(diào)控和探測(cè)的理論和實(shí)驗(yàn)工作,最后對(duì)基于能谷的自旋調(diào)控進(jìn)行了總結(jié)和展望。
[Abstract]:Electronic charge degree of freedom and spin degree of freedom is one of the basic core of modern electronic devices.With the further study of two-dimensional materials, especially the transition group sulfide (TMDCs), another degree of freedom-energy valley-has aroused great interest.Due to the strong coupling of spin and energy valley in TMDCs, spin (energy valley) can be easily regulated and detected by energy valley, which provides a new method and method for the related fields of electron spin and energy valley.This paper first introduces the degree of freedom of energy valley and the strong coupling of spin and energy valley in TMDCs, then introduces the theoretical and experimental work of spin regulation and detection based on circular polarized light excitation and spin injection.Finally, the spin regulation based on energy valley is summarized and prospected.
【作者單位】： 北京大學(xué)物理學(xué)院量子材料科學(xué)中心;量子物質(zhì)科學(xué)協(xié)同創(chuàng)新中心;
【分類(lèi)號(hào)】：O469
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本文編號(hào)：1763059