Coherent exciton-exciton interactions and exciton dynamics in a MoSe2/WSe2 heterostructure

被引：15
|
作者：
Purz, Torben L. [1 ]
Martin, Eric W. [1 ,2 ]
Rivera, Pasqual [3 ]
Holtzmann, William G. [3 ]
Xu, Xiaodong [3 ]
Cundiff, Steven T. [1 ]
机构：
[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[2] MONSTR Sense Technol LLC, Ann Arbor, MI 48104 USA
[3] Univ Washington, Dept Phys, Seattle, WA 98195 USA
来源：
PHYSICAL REVIEW B | 2021年 / 104卷 / 24期
基金：
美国国家科学基金会;
关键词：
FOURIER-TRANSFORM SPECTROSCOPY; ULTRAFAST CHARGE-TRANSFER; INTERLAYER EXCITONS; INTERFERENCE; INVERSION; LASER; SPIN;
D O I：
10.1103/PhysRevB.104.L241302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Coherent coupling between excitons is at the heart of many-body interactions and quantum information with transition metal dichalcogenide heterostructures as an emergent platform for the investigation of these interactions. We employ multidimensional coherent spectroscopy on monolayer MoSe2/WSe2 heterostructures and observe coherent coupling between excitons spatially localized in monolayer MoSe2 and WSe2. Through many-body spectroscopy, we further observe the absorption state arising from free interlayer electron-hole pairs. This observation yields a spectroscopic measurement of the interlayer exciton binding energy of about 250 meV.
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页数：6
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