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Coherent exciton-exciton interactions and exciton dynamics in a MoSe 2 / WSe 2 heterostructure

Journal Article · · Physical Review. B
 [1];  [2];  [3];  [3];  [3];  [4]
  1. University of Michigan, Ann Arbor, MI (United States); OSTI
  2. University of Michigan, Ann Arbor, MI (United States); MONSTR Sense Technologies, LLC, Ann Arbor, MI (United States)
  3. MONSTR Sense Technologies, LLC, Ann Arbor, MI (United States)
  4. University of Michigan, Ann Arbor, MI (United States)

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.

Research Organization:
University of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Science Foundation (NSF)
Grant/Contract Number:
SC0018171
OSTI ID:
1979706
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 24 Vol. 104; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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