A5077759424- 2D Materials and Applications
- Machine Learning in Materials Science
- Advanced Condensed Matter Physics
- Chalcogenide Semiconductor Thin Films
- Plasmonic and Surface Plasmon Research
- Molecular Junctions and Nanostructures
- Physics of Superconductivity and Magnetism
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Organic and Molecular Conductors Research
- Semiconductor Quantum Structures and Devices
- Strong Light-Matter Interactions
- Graphene research and applications
- Thermal Radiation and Cooling Technologies
- Electronic and Structural Properties of Oxides
- Plant biochemistry and biosynthesis
- Rare-earth and actinide compounds
- Antioxidant Activity and Oxidative Stress
- Inorganic Chemistry and Materials
- Superconducting Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
Columbia University
2022-2025
Abstract Graphene is a privileged 2D platform for hosting confined light-matter excitations known as surface plasmon polaritons (SPPs), it possesses low intrinsic losses and high degree of optical confinement. However, the isotropic nature graphene limits its ability to guide focus SPPs, making less suitable than anisotropic elliptical hyperbolic materials polaritonic lensing canalization. Here, we present graphene/CrSBr an engineered interface that hosts highly SPP propagation across...
We investigate heterostructures composed of monolayer WSe2 stacked on α-RuCl3 using a combination Terahertz (THz) and infrared (IR) nanospectroscopy imaging, scanning tunneling spectroscopy (STS), photoluminescence (PL). Our observations reveal itinerant carriers in the heterostructure prompted by charge transfer across WSe2/α-RuCl3 interface. Local STS measurements show Fermi level is shifted to valence band edge which consistent with p-type doping verified density functional theory (DFT)...
As one of the most fundamental physical phenomena, charge density wave (CDW) order predominantly occurs in metallic systems such as quasi-1D metals, doped cuprates, and transition metal dichalcogenides, where it is well understood terms Fermi surface nesting electron-phonon coupling mechanisms. On other hand, CDW phenomena semiconducting systems, particularly at low carrier concentration limit, are less common feature intricate characteristics, which often necessitate exploration novel...
Abstract Kagome vanadates A V 3 Sb 5 display unusual low-temperature electronic properties including charge density waves (CDW), whose microscopic origin remains unsettled. Recently, CDW order has been discovered in a new material ScV 6 Sn , providing an opportunity to explore whether the onset of leads properties. Here, we study this question using angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). The ARPES measurements show minimal changes structure...
Abstract Forming a hetero-interface is materials-design strategy that can access an astronomically large phase space. However, the immense space necessitates high-throughput approach for optimal interface design. Here we introduce computational framework, InterMatch, efficiently predicting charge transfer, strain, and superlattice structure of by leveraging databases individual bulk materials. Specifically, algorithm reads in lattice vectors, density states, stiffness tensors each material...
Graphene is a privileged 2D platform for hosting confined light-matter excitations known as surface plasmon-polaritons (SPPs), it possesses low intrinsic losses with high degree of optical confinement. However, the inherently isotropic properties graphene limit its ability to guide and focus SPPs, making less suitable than anisotropic elliptical hyperbolic materials polaritonic lensing canalization. Here, we present graphene/CrSBr heterostructure an engineered interface that hosts highly SPP...
Moir\'e excitons are emergent optical excitations in 2D semiconductors with deep moir\'e superlattice potentials. While these have been realized several platforms, a system dynamically tunable potential to tailor the exciton properties is yet be realized. Here, we present continuously monolayer WSe2 that enabled by its proximity twisted bilayer graphene (TBG) near magic-angle. Due flat electronic bands, charge distribution highly localized and forms triangular lattice TBG. Tuning local...
Electron-lattice coupling effects in low dimensional materials give rise to charge density wave (CDW) order and phase transitions. These phenomena are critical ingredients for superconductivity predominantly occur metallic model systems such as doped cuprates, transition metal dichalcogenides, more recently, Kagome lattice materials. However, CDW semiconducting systems, specifically at the limit of carrier concentration region, is uncommon. Here, we combine electrical transport, synchrotron...
Forming a hetero-interface is materials-design strategy that can access an astronomically large phase space. However, the immense space necessitates high-throughput approach for optimal interface design. Here we introduce computational framework, InterMatch, efficiently predicting charge transfer, strain, and superlattice structure of by leveraging databases individual bulk materials. Specifically, algorithm reads in lattice vectors, density states, stiffness tensors each material their...