Universität zu Köln

Oldziejewski, Rafal, Chiocchetta, Alessio ORCID: 0000-0003-1782-966X, Knoerzer, Johannes and Schmidt, Richard (2022). Excitonic Tonks-Girardeau and charge density wave phases in monolayer semiconductors. Phys. Rev. B, 106 (8). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Excitons in two-dimensional semiconductors provide a novel platform for fundamental studies of many-body interactions. In particular, dipolar interactions between spatially indirect excitons may give rise to strongly correlated phases of matter that so far have been out of reach of experiments. Here we show that excitonic few-body systems in atomically thin transition-metal dichalcogenides confined to a one-dimensional geometry undergo a crossover from a Tonks-Girardeau to a charge density wave regime. To this end, we take into account realistic system parameters and predict the effective exciton-exciton interaction potential. We find that the pair-correlation function contains key signatures of the many-body crossover already at small exciton numbers and show that photoluminescence spectra provide readily accessible experimental fingerprints of these strongly correlated quantum many-body states.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Oldziejewski, Rafal UNSPECIFIED UNSPECIFIED UNSPECIFIED Chiocchetta, Alessio UNSPECIFIED orcid.org/0000-0003-1782-966X UNSPECIFIED Knoerzer, Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt, Richard UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-670017
DOI:	10.1103/PhysRevB.106.L081412
Journal or Publication Title:	Phys. Rev. B
Volume:	106
Number:	8
Date:	2022
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language WIGNER CRYSTAL; MICROCAVITY; SCATTERING Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67001