165 citations · 315 across the 40 of their papers we have counts for
14 papers · 1 filter
Open-orbit induced low field extremely large magnetoresistance in graphene/h-BN superlattices
Zihao Wang, Pablo M. Perez-Piskunow, Calvin Pei Yu Wong +13
We report intriguing and hitherto overlooked low-field room temperature extremely large magnetoresistance (XMR) patterns in graphene/hexagonal boron nitride (h-BN) superlattices th…
Infrared spectroscopy of phase transitions in the lowest Landau levels of bilayer graphene
B. Jordan Russell, Matheus Schossler, Jesse Balgley +6
We perform infrared magneto-spectroscopy of Landau level (LL) transitions in dual-gated bilayer graphene. At when the zeroth LL (octet) is filled, two resonances are observed…
Raman scattering excitation in monolayers of semiconducting transition metal dichalcogenides
M. Zinkiewicz, M. Grzeszczyk, T. Kazimierczuk +10
Raman scattering excitation (RSE) is an experimental technique in which the spectrum is made up by sweeping the excitation energy when the detection energy is fixed. We study the l…
Electroluminescence of the graphene 2D semi-metal
A. Schmitt, L. Abou-Hamdan, M. Tharrault +18
Electroluminescence, a non-thermal radiative process, is ubiquitous in semi-conductors and insulators but fundamentally precluded in metals. We show here that this restriction can…
Evidence for a Superfluid-to-solid Transition of Bilayer Excitons
Yihang Zeng, Dihao Sun, Naiyuan J. Zhang +8
One of the most spectacular properties associated with Bose-Einstein condensation (BEC) is superfluidity in which the system exhibits zero viscosity and flows without dissipation.…
Electrical excitation of carbon centers in hexagonal boron nitride with tuneable quantum efficiency
M. Grzeszczyk, K. Vaklinova, K. Watanabe +3
Defect centers in wide-band-gap crystals attracted considerable attention due to the realisations of qubits, sensors, or single photon emitters at room temperature. The family of t…
Exploring methods for creation of Boron-vacancies in hexagonal Boron Nitride exfoliated from bulk crystal
T. Zabelotsky, S. Singh, G. Haim +10
Boron vacancies (VB) in hexagonal boron-nitride (hBN) have sparked great interest in recent years, due to their electronic spin properties. Since hBN can be readily integrate…
Control of the Bright-Dark Exciton Splitting using Lamb Shift in a 2D Semiconductor
L. Ren, C. Robert, M. M. Glazov +7
We have investigated the exciton fine structure in atomically thin WSe2 -based van der Waals heterostructures where the density of optical modes at the location of the semiconducto…
Excited state spectroscopy and spin splitting in atomically thin quantum dots
P. Kumar, H. Kim, S. Tripathy +4
Semiconducting transition metal dichalcogenides (TMDCs) are very promising materials for quantum dots and spin-qubit implementation. Reliable operation of spin qubits requires the…
Interlayer excitons in semiconductor bilayers under a strong electric field
S. Kovalchuk, K. Greben, A. Kumar +7
Excitons in bilayer transition metal dichalcogenides (2L-TMDs) are Coulomb-bound electron/hole pairs that can be viewed as broadly tunable analogs of atomic or molecular systems. H…
Magneto-exciton limit of quantum Hall breakdown in graphene
A. Schmitt, M. Rosticher, T. Taniguchi +8
One of the intrinsic drift velocity limit of the quantum Hall effect is the collective magneto-exciton (ME) instability. It has been demonstrated in bilayer graphene (BLG) using no…
Gate-tunable giant superconducting nonreciprocal transport in few-layer -MoTe
T. Wakamura, M. Hashisaka, S. Hoshino +7
We demonstrate gate-tunable giant field-dependent nonreciprocal transport (magnetochiral anisotropy) in a noncentrosymmetric superconductor -MoTe in the thin limit.…
High-field 1/f noise in hBN-encapsulated graphene transistors
A. Schmitt, D. Mele, M. Rosticher +11
Low-frequency 1/f noise in electronics is a conductance fluctuation, that has been expressed in terms of a mobility "-noise" by Hooge and Kleinpenning. Understanding this noise…
Confined-state physics and signs of fermionization of moiré excitons in WSe/MoSe heterobilayers
Frederik Lohof, Johannes Michl, Alexander Steinhoff +10
We revisit and extend the standard bosonic interpretation of interlayer excitons in the moiré potential of twisted heterostructures of transition-metal dichalcogenides. In our expe…