385 citations · 1k across the 16 of their papers we have counts for
17 papers
Direct observation of ultrafast defect-bound and free exciton dynamics in defect-engineered WS monolayers
Tae Gwan Park, Xufan Li, Kyungnam Kang +7
Defects in two-dimensional transition metal dichalcogenides (TMDCs) broadly affect their optical and electronic properties. Directly capturing the ultrafast processes of exciton tr…
Spontaneous Polarization Suppression of Exciton-Exciton Annihilation in 3R-Stacked MoS Bilayers
Tae Gwan Park, Xufan Li, Kyungnam Kang +4
Rapid exciton-exciton annihilation (EEA) in two-dimensional semiconductors limits access to high-density excitonic regimes essential for efficient optoelectronic operation under st…
Atom identification in bilayer moire materials with Gomb-Net
Austin C. Houston, Sumner B. Harris, Hao Wang +4
Moire patterns in van der Waals bilayer materials complicate the analysis of atomic-resolution images, hindering the atomic-scale insight typically attainable with scanning transmi…
Autonomous synthesis of thin film materials with pulsed laser deposition enabled by in situ spectroscopy and automation
Sumner B. Harris, Arpan Biswas, Seok Joon Yun +5
Synthesis of thin films has traditionally relied upon slow, sequential processes carried out with substantial human intervention, frequently utilizing a mix of experience and seren…
A High-Performance Quasi-1D MoS Nanoribbon Photodetector
Ganesh Ghimire, Rajesh Kumar Ulaganathan, Agnes Tempez +11
Molybdenum disulfide (MoS) nanoribbons have attracted increased interest due to their properties which can be tailored by tuning their dimensions. Herein, we demonstrate the gr…
A Facile Strategy for the Growth of High-Quality Tungsten Disulfide Crystals Mediated by Oxygen-Deficient Oxide Precursors
Denys I. Miakota1, Raymond R. Unocic2, Fabian Bertoldo3 +5
Chemical vapor deposition (CVD) has been established as a versatile route for the large-scale synthesis of transition metal dichalcogenides, such as tungsten disulfide (WS2). Yet,…
Fluctuation-driven, topology-stabilized order in a correlated nodal semimetal
Nathan C. Drucker, Thanh Nguyen, Fei Han +19
The interplay between strong electron correlation and band topology is at the forefront of condensed matter research. As a direct consequence of correlation, magnetism enriches top…
Spectroscopic Signatures of Nonlocal Interfacial Coupling in Superconducting FeSe/SrTiO3 Heterostructures
Nina Andrejevic, Fei Han, Thanh Nguyen +10
The mechanism of enhanced superconductivity in the one unit-cell (1UC) FeSe film on a SrTiO3 (STO) substrate has stimulated significant research interest but remains elusive. Using…
A Roadmap for Electronic Grade 2-Dimensional Materials
Natalie Briggs, Shruti Subramanian, Zhong Lin +17
Two dimensional (2D) materials continue to hold great promise for future electronics, due to their atomic-scale thicknesses and wide range of tunable properties. However, commercia…
Deep Learning Analysis of Defect and Phase Evolution During Electron Beam Induced Transformations in WS2
Artem Maksov, Ondrej Dyck, Kai Wang +7
Understanding elementary mechanisms behind solid-state phase transformations and reactions is the key to optimizing desired functional properties of many technologically relevant m…
Mapping mesoscopic phase evolution during e-beam induced transformations via deep learning of atomically resolved images
Rama K. Vasudevan, Nouamane Laanait, Erik M. Ferragut +7
Understanding transformations under electron beam irradiation requires mapping the structural phases and their evolution in real time. To date, this has mostly been a manual endeav…
Room-Temperature Electron-Hole Liquid in Monolayer MoS2
Yiling Yu, Alexander Bataller, Robert Younts +6
Excitons in semiconductors are usually non interacting and behave like an ideal gas, but may condense to a strongly correlated liquid like state, i.e. electron hole liquid (EHL), a…
Observation of Low-frequency Interlayer Breathing Modes in Few-layer Black Phosphorus
Xi Ling, Liangbo Liang, Shengxi Huang +6
As a new two-dimensional layered material, black phosphorus (BP) is a promising material for nanoelectronics and nano-optoelectronics. We use Raman spectroscopy and first-principle…
Efficient Interlayer Relaxation and Transition of Excitons in Epitaxial and Non-epitaxial MoS2/WS2 Heterostructures
Yifei Yu, Shi Hu, Liqin Su +8
Semiconductor heterostructures provide a powerful platform for the engineering of excitons. Here we report the excitonic properties of two-dimensional (2D) heterostructures that co…
Investigation of Gd3N@C2n (40 < n < 44) family by Raman and inelastic electron tunneling spectroscopy
Brian G. Burke, Jack Chan, Keith A. Williams +7
The structure and vibrational spectrum of Gd3N@C80 is studied through Raman and inelastic electron tunneling spectroscopy (IETS) as well as density functional theory (DFT) and univ…
Raman study of Fano interference in p-type doped silicon
Brian G. Burke, Jack Chan, Keith A. Williams +3
As the silicon industry continues to push the limits of device dimensions, tools such as Raman spectroscopy are ideal to analyze and characterize the doped silicon channels. The ef…
Electronic Transport Imaging in a Multiwire SnO2 ChemFET Device
S. V. Kalinin, J. Shin, S. Jesse +5
The electronic transport and the sensing performance of an individual SnO2 crossed nanowires device in a three-terminal field effect configuration were investigated using a combina…