1 citations · 4 across the 39 of their papers we have counts for
40 papers
Autonomous Quantum Transport Measurements of 2D Semiconductors by an AI Agent
Brandon Bauer, Matthew Whalen, Kenji Watanabe +4
Artificial-intelligence (AI) agents are beginning to enter experimental laboratories, automating experiments and accelerating scientific discovery. Herein, we introduce an AI-drive…
Low-Frequency Charge Noise in Bilayer Graphene Quantum Dots
Jessica Richter, Max J. Ruckriegel, Jonas D. Gerber +12
Bilayer graphene (BLG) quantum dots (QDs) are a promising platform for semiconductor qubits. However, the low-frequency charge noise that may ultimately limit coherence has remaine…
Strongly Enhanced Charge-Density Waves and Correlated Insulating State in Atomically Thin 1-TaS
Gan Liu, Yulu Liu, Qiling Luo +7
We investigate thickness-dependent charge-density-wave (CDW) transitions in 1-TaS using temperature-dependent Raman spectroscopy and electrical transport. Raman measurements…
Hidden valley dynamics behind vanishing circular polarization in moiré excitons
Yuto Urano, Lata Chouhan, Nurul Fariha Ahmad +4
Optically addressable valley degrees of freedom in transition-metal dichalcogenide heterostructures provide a powerful platform for valleytronic and quantum-optical functionalities…
Observation of a Mott quantum spin Hall insulator in twisted WSe2
Yifei Jin, Yaqi Ma, Aoqian Zhang +9
Quantum spin Hall (QSH) insulators and Mott insulators are conventionally regarded as distinct insulating phases, arising from band topology and strong Coulomb interactions, respec…
Mechanochemical Nano-Writing of an Atomically Thin Metal
Shuai Zhang, Yanyu Jia, Atanu Samanta +14
Mechanical energy accelerates many physicochemical processes, including materials syntheses that are hard to produce with thermal energy alone. However, physical understanding conn…
Ferroelectric-tunable quantum nonlinearity of chiral Bloch electrons in a moiré system
Zitian Pan, Jundong Zhu, Yu Hong +7
Sliding ferroelectricity in van der Waals materials shows great potential for designing robust memory devices. However, its thermodynamic behaviors and the coupling with certain qu…
Tailoring pure valley-Zeeman spin-orbit coupling in WSe-encapsulated monolayer graphene
Yaqing Han, Siqi Jiang, Jingkuan Xiao +17
Engineering proximity effects in twisted van der Waals heterostructures offers a powerful platform for designing electronic properties. While theoretical predictions of quantum int…
C-band 160 Gbs-1 Zero-bias Graphene Photodetectors: Breaking the Responsivity-Bandwidth Trade-off by Heterostructure Engineering
Karuppasamy Pandian Soundarapandian, Alberto Montanaro, Ioannis Vangelidis +17
Graphene photodetectors offer ultrafast response and broadband operation, but their responsivity is typically limited by rapid hot-carrier cooling, leading to a trade-off between s…
Hierarchical spectral inhomogeneity in photoluminescence of a twisted MoSe2/WSe2 heterobilayer moiré superlattice revealed by hyperspectral mapping
Nurul Fariha Ahmad, Yuto Urano, Kenji Watanabe +3
Low-temperature photoluminescence from MoSe2/WSe2 moire superlattice often consists of a broad interlayer emission background with dense, narrow peaks, making microscopic line-by-l…
Stacking-order-dependent electronic properties of MoTe2/WSe2 moiré bilayers
Zhongdong Han, Wenjin Zhao, Eegene Clara Chung +17
Transition metal dichalcogenide (TMD) moiré bilayers have realized a wide range of strongly correlated and topological phenomena. The physics in these materials is often sensitive…
Shear-Mode Raman Imaging of Ferroelectric Switching in Multilayer 3-MoS
Yulu Liu, Kenji Watanabe, Takashi Taniguchi +1
We use shear-mode Raman imaging to track ferroelectric switching in multilayer 3-MoS. Within a single flake, mechanically segmented regions respond independently and follow…
An AI-driven robotic system for two-dimensional hetero-assemblies
Xiaoxi Li, Jinkun He, Haojie Liu +27
Nanomaterials stacked on-demand, such as rotationally assembled two-dimensional (2D) van der Waals (vdW) layered compounds, provides a versatile platform for quantum simulation and…
Probing tunable Kerr nonlinearity in graphene Josephson junctions
Priyanka Samanta, Joydip Sarkar, Ashish Abhraham Samuel +4
Josephson junction (JJ) is a key nonlinear element in superconducting devices such as qubits, amplifiers, and bolometers. Recently, gate-tunable JJs based on graphene and semicondu…
Ultrafast Nano-Imaging and Optical Control of Hyperbolic Phonon Polaritons at hBN/WS Heterojunctions
Kazuki Kamada, Keisuke Shinokita, Fanyu Zeng +7
Manipulating nanoscale light-matter interactions on ultrafast time scales is indispensable for future polaritonic devices. Hyperbolic phonon polaritons (HPhPs) in van der Waals mat…
Probing Dielectric Screening in van der Waals Heterostructures via Pressure-Tuned Exciton Rydberg Series
Shalini Badola, Adlen Smiri, Thomas Pelini +7
Excitons in two-dimensional semiconductors are directly exposed to the environment and are sensitive to the dielectric properties of their surrounding. Here, we show that the Rydbe…
Qumus: Realization of An Embodied AI Quantum Material Experimentalist
Lihan Shi, Zhaoyi Joy Zheng, Xinzhe Juan +14
While modern Large Language Models (LLMs) and agentic artificial intelligence (AI) have demonstrated transformative capabilities in digital domains, the realization of embodied AI…
Highly Efficient Exciton Modulation in MoSe/PdSe Heterostructures
Petr Rozhin, Emma Contin, Danae Katrisioti +15
Controlling exciton recombination in atomically thin semiconductors is central to their optoelectronic functionality, as the competition between radiative and non-radiative decay c…
Optimizing strong light-matter coupling of plasmonic lattices and monolayer semiconductors
Lukas Krelle, Lukas Husel, Kenji Watanabe +4
Exciton-polaritons provide a versatile platform for the study of a wide range of phenomena, including polariton lasers, topological polaritons, and bosonic condensation. Transition…
Reconfigurable chiral superconductivity
Surajit Dutta, Nadav Auerbach, Tonghang Han +9
Rhombohedral multilayer graphene at high displacement fields hosts superconductivity emerging from a spin valley polarized quarter metal, with transport signatures suggestive of ti…
Imaging Interacting Two-Dimensional Anisotropic Electrons
Ziyu Xiang, Jianghan Xiao, Hongyuan Li +9
We directly visualize a two-dimensional anisotropic Wigner crystal and its quantum melting in monolayer 1T-ReSe2 using non-invasive scanning tunnelling microscopy. In crystals with…
Probing charge noise in bilayer graphene quantum dots by Landau-Zener-Stückelberg-Majorana spectroscopy
Katrin Hecker, Samuel Möller, Tobias Deußen +6
Charge noise is an important factor limiting qubit coherence and relaxation in solid-state devices. In bilayer graphene (BLG) quantum dots, recently established as a promising plat…
Optical signatures of antiferromagnetic correlations in a strongly interacting quantum Hall MoSe2 monolayer
Jiho Sung, Pavel A. Volkov, Ilya Esterlis +9
Strong magnetic fields quench the kinetic energy of electrons, leading to the formation of flat energy bands, known as Landau levels (LLs). In this situation, even weak interaction…
Strain Correlated Linearly Polarized Photoluminescence in WS2/WSe2 Moiré Superlattices
Yuto Urano, Ryo Tamura, Yui Tamogami +6
Reliable optical control of valley degrees of freedom in moiré excitons requires that the emitted polarization faithfully reflect the underlying valley state. Here, we show that li…