Interaction-Induced Shubnikov–de Haas Oscillations in Optical Conductivity of Monolayer 
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Smoleński, T.; Cotleţ, Ovidiu; Popert, Alexander; Back, Patrick; Shimazaki, Yuya; Knüppel, Patrick; Dietler, N.; Taniguchi, Takashi; Watanabe, Kenji; Kroner, Martin; İmamoğlu, Ataç

doi:10.1103/physrevlett.123.097403

Cited by 67 publications

(41 citation statements)

References 63 publications

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“…They find the reduced mass equal to 0.268 V : . A few more recent works also reported inter-Landau-level transitions in doped hBNencapsulated monolayer WSe2 [274][275][276] and MoSe2 277 . Notably, the reduced masses are also determined in a more consistent fashion by analyzing the energy shifts of the excitons in the low-field limit (diamagnetic shift).…”

Section: Landau Quantization and Rydberg Spectroscopymentioning

confidence: 93%

Magneto-optics of layered two-dimensional semiconductors and heterostructures: Progress and prospects

Arora

2021

Journal of Applied Physics

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Beginning with the 'conventional' two-dimensional (2D) quantum wells (QWs) based on III-V and II-VI semiconductors in the 1970s, to the recent atomically-thin sheets of van der Waals materials such as 2D semiconducting transition metal dichalcogenides (TMDCs) and 2D magnets, the research in 2D materials is continuously evolving and providing new challenges. Magnetooptical spectroscopy has played a significant role in this area of research, both from fundamental physics and technological perspectives. A major challenge in 2D semiconductors such as TMDCs is to understand their spin-valley-resolved physics, and their implications in quantum computation and information research. Since the discovery of valley Zeeman effects, deep insights into the spin-valley physics of TMDCs and their heterostructures has emerged through magnetooptical spectroscopy. In this perspective, we highlight the role of magnetooptics in many milestones such as the discovery of interlayer excitons, phase control between coherently-excited valleys, determination of exciton-reduced masses, Bohr radii and binding energies, physics of the optically-bright and dark excitons, trions, other many-body species such as biexcitons and their phonon replicas in TMDC monolayers. The discussion accompanies open questions, challenges and future prospects in the field including comments on the magnetooptics of van der Waals heterostructures involving TMDCs and 2D magnets.

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Section: Landau Quantization and Rydberg Spectroscopymentioning

confidence: 93%

Magneto-optics of layered two-dimensional semiconductors and heterostructures: Progress and prospects

Arora

2021

Journal of Applied Physics

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“…Concurrently, the exciton resonance evolves into a repulsive polaron (RP) (see Supplementary Information S1). The strong sensitivity of the RP resonance energy to changes in electron density renders it an ideal spectroscopic tool for sensing the electron density n in the same layer 24,25 . The strain induced resonance energy difference between X top and X bot , ensuring different energies for the corresponding RP top and RP bot , together with the much weaker sensitivity of RP top (RP bot ) on electron density n b (n t ) in the bottom (top) layer, allows us to determine the charging configuration of the two layers simultaneously.…”

Section: Charge Configuration Detection By Exciton-polaron Spectmentioning

confidence: 99%

Strongly correlated electrons and hybrid excitons in a moiré heterostructure

Shimazaki

Schwartz

Watanabe

et al. 2020

Nature

344

258

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“…To explain experiments in which both the valley Zeeman effect and LLs are important [8,17], one needs to find a general approach to take into account the two effects on an equal-footing framework. However, in many cases, the above theories are patched together in an ad hoc fashion to interpret transport and optical measurements in the literature [8,[17][18][19]. Specifically, the LLs obtained from the massive Dirac fermion model are further shifted by an additive Zeeman term, which is obtained from one of the models that deduced an expression for the Zeeman term without the LL effect.…”

Section: Introductionmentioning

confidence: 99%

Valley Zeeman effect and Landau levels in two-dimensional transition metal dichalcogenides

Xuan

Quek

2020

Phys. Rev. Research

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This paper presents a theoretical description of both the valley Zeeman effect (g-factors) and Landau levels in two-dimensional H-phase transition metal dichalcogenides (TMDs) using the Luttinger-Kohn approximation with spin-orbit coupling. At the valley extrema in TMDs, energy bands split into Landau levels with a Zeeman shift in the presence of a uniform out-of-plane external magnetic field. The Landau level indices are symmetric in the K and K valleys. We develop a numerical approach to compute the single-band g-factors from first principles without the need for a sum over unoccupied bands. Many-body effects are included perturbatively within the GW approximation. Nonlocal exchange and correlation self-energy effects in the GW calculations increase the magnitude of single-band g-factors compared to those obtained from density functional theory. Our first-principles results give spin-and valley-split Landau levels, in agreement with recent optical experiments. The exciton g-factors deduced in this work are also in good agreement with experiment for the bright and dark excitons in monolayer WSe 2 , as well as the lowest-energy bright excitons in MoSe 2-WSe 2 heterobilayers with different twist angles.

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Interaction-Induced Shubnikov–de Haas Oscillations in Optical Conductivity of Monolayer MoSe2

Cited by 67 publications

References 63 publications

Magneto-optics of layered two-dimensional semiconductors and heterostructures: Progress and prospects

Magneto-optics of layered two-dimensional semiconductors and heterostructures: Progress and prospects

Strongly correlated electrons and hybrid excitons in a moiré heterostructure

Valley Zeeman effect and Landau levels in two-dimensional transition metal dichalcogenides

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