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6 papers · 2 filters
Optically discriminating carrier-induced quasiparticle band gap and exciton energy renormalization in monolayer MoS2
Kaiyuan Yao, Aiming Yan, Salman Kahn +7
Optoelectronic excitations in monolayer MoS2 manifest from a hierarchy of electrically tunable, Coulombic free-carrier and excitonic many-body phenomena. Investigating the fundamen…
Large magnetoresistance in type-II Weyl semimetal WP
Aifeng Wang, D. Graf, Yu Liu +4
We report magnetotransport study on type-II Weyl semimetal WP single crystals. Magnetoresistance (MR) exhibits a nonsaturating field dependence (14,300\% at 2 K and 9 T…
Band Structure of Two-dimensional Dirac Semimetal from Cyclotron Resonance
A. M. Shuvaev, V. Dziom, N. N. Mikhailov +4
Knowing the band structure of materials is one of the prerequisites to understand their properties. Therefore, especially in the last decades, angle-resolved photoemission spectros…
A low-background piston-cylinder type hybrid high pressure cell for muon-spin rotation/relaxation experiments
Z. Shermadini, R. Khasanov, M. Elender +4
A low background double-wall piston-cylinder-type pressure cell is developed at the Paul Scherrer Institute. The cell is made from BERLYCO-25 (beryllium copper) and MP35N nonmagnet…
Exciton-Exciton Annihilation Is Coherently Suppressed in H-Aggregates, but Not in J-Aggregates
Roel Tempelaar, Thomas L. C. Jansen, Jasper Knoester
We theoretically demonstrate a strong dependence of the annihilation rate between (singlet) excitons on the sign of dipole-dipole couplings between molecules. For molecular H-aggre…
Approaching the Intrinsic Photoluminescence Linewidth in Transition Metal Dichalcogenide Monolayers
Obafunso A. Ajayi, Jenny V. Ardelean, Gabriella D. Shepard +8
Excitonic states in monolayer transition metal dichalcogenides (TMDCs) have been the subject of extensive recent interest. Their intrinsic properties can, however, be obscured due…