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Ashish Arora
Researcher at University of Münster
Publications - 56
Citations - 3795
Ashish Arora is an academic researcher from University of Münster. The author has contributed to research in topics: Exciton & Monolayer. The author has an hindex of 21, co-authored 49 publications receiving 2976 citations. Previous affiliations of Ashish Arora include Tata Institute of Fundamental Research & Centre national de la recherche scientifique.
Papers
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Journal ArticleDOI
Single photon emitters in exfoliated WSe2 structures.
Maciej Koperski,K. Nogajewski,Ashish Arora,V. Cherkez,Pierre Mallet,Jean-Yves Veuillen,Jacques Marcus,Piotr Kossacki,Marek Potemski +8 more
TL;DR: In this paper, optical micro-spectroscopy studies of thin layers of tungsten diselenide (WSe2), a representative semiconducting dichalcogenide with a bandgap in the visible spectral range.
Journal ArticleDOI
Indirect-to-Direct Band Gap Crossover in Few-Layer MoTe 2
Ignacio Gutiérrez Lezama,Ashish Arora,Alberto Ubaldini,Céline Barreteau,Enrico Giannini,Marek Potemski,Alberto F. Morpurgo +6 more
TL;DR: The analysis of the measurements indicates that in complete analogy with other semiconducting transition metal dichalchogenides (TMDs) the dominant PL emission peaks originate from direct transitions associated with recombination of excitons and trions.
Journal ArticleDOI
Excitonic resonances in thin films of WSe2: from monolayer to bulk material
Ashish Arora,Maciej Koperski,Maciej Koperski,K. Nogajewski,Jacques Marcus,Clément Faugeras,Marek Potemski +6 more
TL;DR: In this article, optical spectroscopy studies of thin layers of the transition metal dichalcogenide WSe2, with thickness ranging from mono-to tetra-layer and in the bulk limit, are presented.
Journal ArticleDOI
Trion fine structure and coupled spin-valley dynamics in monolayer tungsten disulfide.
Gerd Plechinger,Philipp Nagler,Ashish Arora,Robert Schmidt,Alexey Chernikov,Andrés Granados del Águila,Peter C. M. Christianen,Rudolf Bratschitsch,Christian Schüller,Tobias Korn +9 more
TL;DR: In photoluminescence and in energy-dependent Kerr rotation measurements, the authors are able to resolve two different trion states, which they interpret as intravalley and intervalley trions.
Journal ArticleDOI
Indirect-to-direct band-gap crossover in few-layer MoTe$_2$
Ignacio Gutiérrez-Lezama,Ashish Arora,Alberto Ubaldini,Céline Barreteau,Enrico Giannini,Marek Potemski,Alberto F. Morpurgo +6 more
TL;DR: In this article, the evolution of the band-gap structure in few-layer MoTe$_2$ crystals was studied by means of low-temperature micro-reflectance (MR) and temperature-dependent photoluminescence (PL) measurements.