TY - JOUR
T1 - Excitons in Bilayer MoS2 Displaying a Colossal Electric Field Splitting and Tunable Magnetic Response
AU - Lorchat, Etienne
AU - Selig, Malte
AU - Katsch, Florian
AU - Yumigeta, Kentaro
AU - Tongay, Sefaattin
AU - Knorr, Andreas
AU - Schneider, Christian
AU - Höfling, Sven
N1 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/1/20
Y1 - 2021/1/20
N2 - van der Waals heterostructures composed of transition metal dichalcogenide monolayers (TMDCs) are characterized by their truly rich excitonic properties which are determined by their structural, geometric, and electronic properties: In contrast to pure monolayers, electrons and holes can be hosted in different materials, resulting in highly tunable dipolar many-particle complexes. However, for genuine spatially indirect excitons, the dipolar nature is usually accompanied by a notable quenching of the exciton oscillator strength. Via electric and magnetic field dependent measurements, we demonstrate that a slightly biased pristine bilayer MoS2 hosts strongly dipolar excitons, which preserve a strong oscillator strength. We scrutinize their giant dipole moment, and shed further light on their orbital and valley physics via bias-dependent magnetic field measurements.
AB - van der Waals heterostructures composed of transition metal dichalcogenide monolayers (TMDCs) are characterized by their truly rich excitonic properties which are determined by their structural, geometric, and electronic properties: In contrast to pure monolayers, electrons and holes can be hosted in different materials, resulting in highly tunable dipolar many-particle complexes. However, for genuine spatially indirect excitons, the dipolar nature is usually accompanied by a notable quenching of the exciton oscillator strength. Via electric and magnetic field dependent measurements, we demonstrate that a slightly biased pristine bilayer MoS2 hosts strongly dipolar excitons, which preserve a strong oscillator strength. We scrutinize their giant dipole moment, and shed further light on their orbital and valley physics via bias-dependent magnetic field measurements.
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U2 - 10.1103/PhysRevLett.126.037401
DO - 10.1103/PhysRevLett.126.037401
M3 - Article
C2 - 33543981
AN - SCOPUS:85099883387
SN - 0031-9007
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
IS - 3
M1 - 037401
ER -