456 citations · 921 across the 14 of their papers we have counts for
14 papers
Moiré enabled spin pumping and preservation in MoSe2/WS2 heterobilayers
Leo Yu, Kateryna Pistunova, Sudipta Kundu +5
The spin degree of freedom is a fundamental quantum mechanical attribute with implications spanning from magnetism to quantum computing. Consequently, the relaxation of spin states…
SpanVLA: Learning from Negative-Recovery Samples with Fast Action Bridging for Vision-Language-Action Model
Zewei Zhou, Ruining Yang, Xuewei Qi +9
Vision-Language-Action (VLA) models bring rich world knowledge and reasoning capabilities to autonomous driving. However, most driving VLAs are trained only on positive expert demo…
Electric-field-tuned consecutive topological phase transitions between distinct correlated insulators in moire MoTe2/WSe2 heterobilayer
Xumin Chang, Zui Tao, Bowen Shen +10
Consecutive topological phase transitions (TPTs) between strongly correlated electronic phases that differ simultaneously in symmetry breaking and topological order are of fundamen…
Controlled Interlayer Exciton Ionization in an Electrostatic Trap in Atomically Thin Heterostructures
Andrew Y. Joe, Andrés M. Mier Valdivia, Luis A. Jauregui +13
Atomically thin semiconductor heterostructures provide a two-dimensional (2D) device platform for creating high densities of cold, controllable excitons. Interlayer excitons (IEs),…
Transport Study of Charge Carrier Scattering in Monolayer WSe
Andrew Y. Joe, Kateryna Pistunova, Kristen Kaasbjerg +9
Employing flux-grown single crystal WSe, we report charge carrier scattering behaviors measured in -BN encapsulated monolayer field effect transistors. We perform quantum tr…
Invalid Logic, Equivalent Gains: The Bizarreness of Reasoning in Language Model Prompting
Rylan Schaeffer, Kateryna Pistunova, Samar Khanna +2
Language models can be prompted to reason through problems in a manner that significantly improves performance. However, \textit{why} such prompting improves performance is unclear…
Extracting Molecular Properties from Natural Language with Multimodal Contrastive Learning
Romain Lacombe, Andrew Gaut, Jeff He +2
Deep learning in computational biochemistry has traditionally focused on molecular graphs neural representations; however, recent advances in language models highlight how much sci…
Double Descent Demystified: Identifying, Interpreting & Ablating the Sources of a Deep Learning Puzzle
Rylan Schaeffer, Mikail Khona, Zachary Robertson +5
Double descent is a surprising phenomenon in machine learning, in which as the number of model parameters grows relative to the number of data, test error drops as models grow ever…
Valley-coherent quantum anomalous Hall state in AB-stacked MoTe2/WSe2 bilayers
Zui Tao, Bowen Shen, Shengwei Jiang +11
Moiré materials provide fertile ground for the correlated and topological quantum phenomena. Among them, the quantum anomalous Hall (QAH) effect, in which the Hall resistance is qu…
Electrically controlled emission from singlet and triplet exciton species in atomically thin light emitting diodes
Andrew Y. Joe, Luis A. Jauregui, Kateryna Pistunova +15
Excitons are composite bosons that can feature spin singlet and triplet states. In usual semiconductors, without an additional spin-flip mechanism, triplet excitons are extremely i…
Electrically controlled emission from triplet charged excitons in atomically thin heterostructures
Andrew Y. Joe, Luis A. Jauregui, Kateryna Pistunova +15
Excitons are composite bosons that can feature spin singlet and triplet states. In usual semiconductors, without an additional spin-flip mechanism, triplet excitons are extremely i…
Electrical control of interlayer exciton dynamics in atomically thin heterostructures
Luis A. Jauregui, Andrew Y. Joe, Kateryna Pistunova +13
Excitons in semiconductors, bound pairs of excited electrons and holes, can form the basis for new classes of quantum optoelectronic devices. A van der Waals heterostructure built…
Guided Modes of Anisotropic van der Waals Materials Investigated by Near-Field Scanning Optical Microscopy
Daniel Wintz, Kundan Chaudhary, Ke Wang +11
Guided modes in anisotropic two-dimensional van der Waals materials are experimentally investigated and their refractive indices in visible wavelengths are extracted. Our method in…
Probing dark excitons in atomically thin semiconductors via near-field coupling to surface plasmon polaritons
You Zhou, Giovanni Scuri, Dominik S. Wild +12
Transition metal dichalcogenide (TMD) monolayers are direct bandgap semiconductors that feature tightly bound excitons, strong spin-orbit coupling, and spin-valley degrees of freed…