Jonathan Förste
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View article: Implementation of the bilayer Hubbard model in a moiré heterostructure
Implementation of the bilayer Hubbard model in a moiré heterostructure Open
Moiré materials provide a unique platform for studies of correlated many-body physics of the Fermi-Hubbard model on triangular spin-charge lattices. Bilayer Hubbard models are of particular significance with regard to the physics of Mott i…
View article: Field-induced hybridization of moiré excitons in MoSe$_2$/WS$_2$ heterobilayers
Field-induced hybridization of moiré excitons in MoSe$_2$/WS$_2$ heterobilayers Open
We study experimentally and theoretically the hybridization among intralayer and interlayer moiré excitons in a MoSe$_2$/WS$_2$ heterostructure with antiparallel alignment. Using a dual-gate device and cryogenic white light reflectance and…
View article: Coulomb-correlated states of moiré excitons and charges in a semiconductor moiré lattice
Coulomb-correlated states of moiré excitons and charges in a semiconductor moiré lattice Open
Semiconductor moiré heterostructures exhibit rich correlation-induced many-body phenomena with signatures of emergent magnetism, Mott insulating states or generalized Wigner crystals observed in optical spectroscopy by probing intralayer e…
View article: Stacking-dependent exciton multiplicity in WSe2 bilayers
Stacking-dependent exciton multiplicity in WSe2 bilayers Open
Twisted layers of atomically thin two-dimensional materials realize a broad range of novel quantum materials with engineered optical and transport phenomena arising from spin and valley degrees of freedom and strong electron correlations i…
View article: Spectral asymmetry of phonon sideband luminescence in monolayer and\n bilayer WSe2
Spectral asymmetry of phonon sideband luminescence in monolayer and\n bilayer WSe2 Open
We report an experimental study of temperature-dependent spectral lineshapes\nof phonon side-band emission stemming from dark excitons in monolayer and\nbilayer WSe$_{2}$. Using photoluminescence spectroscopy in the range from 4 to\n100K, …
View article: Spectral asymmetry of phonon sideband luminescence in monolayer and bilayer WSe2
Spectral asymmetry of phonon sideband luminescence in monolayer and bilayer WSe2 Open
We report an experimental study of temperature-dependent spectral lineshapes of phonon side-band emission stemming from dark excitons in monolayer and bilayer WSe$_{2}$. Using photoluminescence spectroscopy in the range from 4 to 100K, we …
View article: Identifying optical signatures of momentum-dark excitons in transition metal dichalcogenide monolayers
Identifying optical signatures of momentum-dark excitons in transition metal dichalcogenide monolayers Open
Transition metal dichalcogenide (TMD) monolayers (MLs) exhibit rich photoluminescence spectra associated with interband optical transitions of direct-gap semiconductors. Upon absorption of photons, direct excitons with zero center-of-mass …
View article: Identifying optical signatures of momentum-dark excitons in transition\n metal dichalcogenide monolayers
Identifying optical signatures of momentum-dark excitons in transition\n metal dichalcogenide monolayers Open
Transition metal dichalcogenide (TMD) monolayers (MLs) exhibit rich\nphotoluminescence spectra associated with interband optical transitions of\ndirect-gap semiconductors. Upon absorption of photons, direct excitons with\nzero center-of-ma…