274 citations · 2.1k across the 64 of their papers we have counts for
64 papers
Charge-Density-Wave Phase Transitions in Monolayer 1T-TaS2 from Universal Machine Learning Molecular Dynamics
Valentina Nesterova, Tribhuwan Pandey, Tom Berlijn +3
Charge-density-wave (CDW) phases in 1T transition-metal dichalcogenides arise from strong electron-phonon coupling and accompanying lattice instabilities. Capturing their temperatu…
Angle-Resolved Cryogenic Brillouin-Mandelstam Spectroscopy of Surface and Bulk Acoustic Phonons in Diamond
Jordan Teeter, Dylan Wright, Nidhish Thiruthukkal Puthenveettil +2
We used angle-resolved Brillouin-Mandelstam light-scattering spectroscopy to monitor surface and bulk acoustic phonons in diamond along the <100> and <110> crystallographic directi…
Electronic-Structure Correlations Governing Superconductivity in Nb-Based High-Entropy Alloys
Md Sabbir Hossen Bijoy, Vladislav Korostelev, Deva Prasaad Neelakandan +10
Superconducting high-entropy alloys have recently emerged as a new platform for exploring superconductivity in highly disordered metallic systems and may offer advantages for appli…
Phonon Signatures of Near-Room-Temperature Phase Transition in Quasi-One-Dimensional Bi4I4 Topological van der Waals Material
Nidhish Thiruthukkal Puthenveettil, Topojit Debnath, Clayton Mantz +7
The quasi-one-dimensional material Bi4I4 hosts two crystallographically similar polymorphs that realize distinct topological insulating phases separated by a first-order structural…
Anomalous spin-lattice coupling in a 2D antiferromagnetic semiconductor revealed by surface acoustic Rayleigh waves
Zahra Ebrahim Nataj, Md. Sabbir Hossen Bijoy, Vladislav Korostelev +5
Magnetic order in van der Waals magnets can strongly influence their lattice dynamics, yet how this interaction manifests across different phonon length scales remains unclear. Opt…
Quantum Spin Singlet Ground State with Large Excitation Gap in the S = 3/2 quasi-1D van der Waals materials MoX3 (X = I, Br)
Jordan Teeter, Topojit Debnath, Harshil Goyal +18
We report the first experimental evidence for a quantum-disordered spin-singlet ground state and gapped triplon excitations in quasi-one-dimensional van der Waals materials. The in…
Acoustic Phonon Characteristics of Gallium Oxide Single Crystals Investigated with Brillouin-Mandelstam Light Scattering Spectroscopy
Dylan Wright, Erick Guzman, Md. Sabbir Hossen Bijoy +5
We report an investigation of the bulk and surface acoustic phonons in gallium oxide ultra-wide bandgap single crystals along various crystallographic directions using Brillouin-Ma…
First-principles study of structural, electronic and optical properties of non-toxic RbBaX (X = F, Cl, Br, I) perovskites under hydrostatic pressure
Pranti Saha, In Jun Park, Protik Das +1
We have investigated the structural, mechanical, electronic and optical properties of Rb-based cubic perovskite RbBaX (X = F, Cl, Br, I) under hydrostatic pressure, using first…
Acoustic and Optical Phonon Frequencies and Acoustic Phonon Velocities in Silicon-Doped Aluminum Nitride Thin Films
Dylan Wright, Dinusha Herath Mudiyanselage, Erick Guzman +6
We report the results of the study of the acoustic and optical phonons in Si-doped AlN thin films grown by metalorganic chemical vapor deposition on sapphire substrates. The Brillo…
Solution-Processed Inks with Fillers of NbS Quasi-One-Dimensional Charge-Density-Wave Material
Tekwam Geremew, Maedeh Taheri, Nicholas Sesing +4
We report on the solution processing and testing of electronic ink comprised of quasi-one-dimensional NbS charge-density-wave fillers. The ink was prepared by liquid-phase exfo…
Acoustic and Optical Phonons in Quasi-Two-Dimensional MPX3 Van der Waals Semiconductors
Dylan Wright, Zahra Ebrahim Nataj, Erick Guzman +4
We report the results of the investigation of the acoustic and optical phonons in quasi-two-dimensional antiferromagnetic semiconductors of the transition metal phosphorus trisulfi…
Strong Temperature Dependence of Thermal Conductivity in High-Purity Cubic Boron Arsenide
Songrui Hou, Fengjiao Pan, Xinping Shi +11
Materials with high thermal conductivity are needed to conduct heat away from hot spots in high power electronics and optoelectronic devices. Cubic boron arsenide (c-BAs) has a hig…
Electronic Noise Spectroscopy of Quasi-2D van der Waals Antiferromagnetic Semiconductors
Subhajit Ghosh, Zahra Ebrahim Nataj, Fariborz Kargar +1
We investigated low-frequency current fluctuations, i.e. electronic noise, in FePS3 van der Waals, layered antiferromagnetic semiconductor. The noise measurements have been used as…
Phonon States in NbTe and TaTe Quasi-One-Dimensional van der Waals Crystals
Zahra Ebrahim Nataj, Fariborz Kargar, Sergiy Krylyuk +7
We report the results of polarization-dependent Raman spectroscopy of phonon states in single-crystalline quasi-one-dimensional NbTe and TaTe van der Waals materials. The m…
Temperature Dependent Low-Frequency Noise Characteristics of NiO/GaO p-n Heterojunction Diodes
Subhajit Ghosh, Dinusha Herath Mudiyanselage, Fariborz Kargar +3
We report on the temperature dependence of the low-frequency electronic noise in NiO/GaO p-n heterojunction diodes. The noise spectral density is of the 1/f-type near r…
Optical and Acoustic Phonons in Turbostratic and Cubic Boron Nitride Thin Films on Diamond Substrates
Erick Guzman, Fariborz Kargar, Avani Patel +6
We report an investigation of the bulk optical, bulk acoustic, and surface acoustic phonons in thin films of turbostratic boron nitride (t-BN) and cubic boron nitride (c-BN) grown…
Conductance Fluctuations and Domain Depinning in Quasi-2D Charge-Density-Wave 1T-TaS Thin Films
Jonas O. Brown, Maedeh Taheri, Fariborz Kargar +5
We investigated the temperature dependence of the conductance fluctuations in thin films of the quasi-two-dimensional 1T-TaS van der Waals material. The conductance fluctuation…
Quantum Composites with the Functionality Defined by the Charge-Density-Wave Phase Transitions
Zahra Barani, Tekwam Geremew, Megan Stokey +7
We demonstrate a unique class of advanced materials - quantum composites based on polymers with fillers comprised of a van der Waals quantum material that reveals multiple charge-d…
Cryogenic Characteristics of Graphene Composites -- Evolution from Thermal Conductors to Thermal Insulators
Zahra Ebrahim Nataj, Youming Xu, Jonas Brown +4
The development of cryogenic semiconductor electronics and superconducting quantum computing requires composite materials that can provide both thermal conduction and thermal insul…
Specifics of the Elemental Excitations in "True One-Dimensional" MoI van der Waals Nanowires
Fariborz Kargar, Zahra Barani, Nicholas R. Sesing +15
We report on the temperature evolution of the polarization-dependent Raman spectrum of exfoliated MoI, a van der Waals material with a "true one-dimensional" crystal structure…
Low-Frequency Noise in Quasi-1D (TaSe)I Weyl Semimetal Nanoribbons
Subhajit Ghosh, Fariborz Kargar, Nick R. Sesing +5
We report on low-frequency current fluctuations, i.e. electronic noise, in quasi-one-dimensional (TaSe)I Weyl semimetal nanoribbons. It was found that the noise spectral de…
Electrical Gating of the Charge-Density-Wave Phases in Quasi-2D h-BN/1T-TaS Devices
Maedeh Taheri, Jonas Brown, Adil Rehman +5
We report on electrical gating of the charge-density-wave phases and current in h-BN capped three-terminal 1T-TaS heterostructure devices. It is demonstrated that the applicati…
The Effects of Boron Doping on the Bulk and Surface Acoustic Phonons in Single-Crystal Diamond
Erick Guzman, Fariborz Kargar, Frank Angeles +7
We report the results of the investigation of bulk and surface acoustic phonons in the undoped and boron-doped single-crystal diamond films using the Brillouin-Mandelstam light sca…
One-Dimensional van der Waals Quantum Materials -- State of the Art and Perspectives
Alexander A. Balandin, Fariborz Kargar, Tina T. Salguero +1
The advent of graphene and other two-dimensional van der Waals materials, with their unique electrical, optical, and thermal properties, has resulted in tremendous progress for fun…