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Crystal phases of charged interlayer excitons in van der Waals heterostructures
Communications Physics ( IF 5.5 ) Pub Date : 2021-06-25 , DOI: 10.1038/s42005-021-00624-1
Igor V. Bondarev , Oleg L. Berman , Roman Ya. Kezerashvili , Yurii E. Lozovik

Throughout the years, strongly correlated coherent states of excitons have been the subject of intense theoretical and experimental studies. This topic has recently boomed due to new emerging quantum materials such as van der Waals (vdW) bound atomically thin layers of transition metal dichalcogenides (TMDs). We analyze the collective properties of charged interlayer excitons observed recently in bilayer TMD heterostructures. We predict strongly correlated phases—crystal and Wigner crystal—that can be selectively realized with TMD bilayers of properly chosen electron-hole effective masses by just varying their interlayer separation distance. Our results can be used for nonlinear coherent control, charge transport and spinoptronics application development with quantum vdW heterostuctures.



中文翻译:

范德华异质结构中带电层间激子的晶相

多年来,激子的强相关相干态一直是激烈的理论和实验研究的主题。由于新出现的量子材料,如范德华 (vdW) 结合原子级的过渡金属二硫属化物 (TMD) 薄层,这个话题最近蓬勃发展。我们分析了最近在双层 TMD 异质结构中观察到的带电层间激子的集体特性。We predict strongly correlated phases—crystal and Wigner crystal—that can be selectively realized with TMD bilayers of properly chosen electron-hole effective masses by just varying their interlayer separation distance. 我们的结果可用于具有量子 vdW 异质结构的非线性相干控制、电荷传输和自旋光电子学应用开发。

更新日期:2021-06-25
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