832 citations · 3.6k across the 65 of their papers we have counts for
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Symmetry-breaking induced surface magnetization in non-magnetic RuO
Dai Q. Ho, D. Quang To, Ruiqi Hu +2
Altermagnetism is a newly identified phase of magnetism distinct from ferromagnetism and antiferromagnetism. RuO has been considered a prototypical metallic altermagnet with a…
Role of chalcogen vacancies and hydrogen in the optical and electrical properties of bulk transition-metal dichalcogenides
Shoaib Khalid, Anderson Janotti, Bharat Medasani
Like in any other semiconductor, point defects in transition-metal dichalcogenides (TMDs) are expected to strongly impact their electronic and optical properties. However, identify…
Fermi-level pinning in ErAs nanoparticles embedded in III-V semiconductors
Ruiqi Hu, Dai Q. Ho, Quang To +2
Embedding rare-earth pnictide (RE-V) nanoparticles into III-V semiconductors enables unique optical, electrical, and thermal properties, with applications in THz photoconductive sw…
Large Rashba splittings in bulk and monolayer of BiAs
Muhammad Zubair, Igor Evangelista, Shoaib Khalid +2
Two-dimensional materials with Rashba split bands near the Fermi level are key to developing upcoming next-generation spintronics. They enable generating, detecting, and manipulati…
The deep-acceptor nature of the chalcogen vacancies in 2D transition-metal dichalcogenides
Shoaib Khalid, Bharat Medasani, John L. Lyons +2
Chalcogen vacancies in the semiconducting monolayer transition-metal dichalcogenides (TMDs) have frequently been invoked to explain a wide range of phenomena, including both uninte…
Dramatic enhancement of visible-light absorption in TiO2 by adding Bi
Fernando P. Sabino, Anderson Janotti
TiO2 is a wide band-gap semiconductor that has been intensively investigated for photocatalysis and water-spiting. However, weak light absorption in the visible region of the spect…
Non-trivial topology in rare-earth monopnictides from dimensionality reduction
Dai Q. Ho, Ruiqi Hu, D. Quang To +2
Thin films of rare-earth monopnictide semimetals are expected to turn into semiconductors due to quantum confinement effect, which lifts the overlap between electron pockets at Bri…
Inversion Symmetry Breaking in Epitaxial Ultrathin Bi (111) Films
Hadass S. Inbar, Muhammad Zubair, Jason T. Dong +8
Bismuth (Bi) films hold potential for spintronic devices and topological one-dimensional edge transport. Large-area high-quality (111) Bi ultrathin films are grown on InSb (111)B s…
Tuning the Band Topology of GdSb by Epitaxial Strain
Hadass S. Inbar, Dai Q. Ho, Shouvik Chatterjee +12
Rare-earth monopnictide (RE-V) semimetal crystals subjected to hydrostatic pressure have shown interesting trends in magnetoresistance, magnetic ordering, and superconductivity, wi…
Epitaxial growth, magnetoresistance, and electronic band structure of GdSb magnetic semimetal films
Hadass S. Inbar, Dai Q. Ho, Shouvik Chatterjee +12
Motivated by observations of extreme magnetoresistance (XMR) in bulk crystals of rare-earth monopnictide (RE-V) compounds and emerging applications in novel spintronic and plasmoni…
Hybrid Molecular Beam Epitaxy of Ge-based Oxides
Fengdeng Liu, Tristan K Truttmann, Dooyong Lee +6
Germanium-based oxides such as rutile GeO2 are garnering attention owing to their wide band gaps and the prospects for ambipolar doping for application in high-power devices. Here,…
Hole conductivity through a defect band in
Fernando P. Sabino, Intuon Chatratin, Anderson Janotti +1
Semiconductors with wide band gap (3.0 eV), high dielectric constant (> 10), good thermal dissipation, and capable of - and -type doping are highly desirable for high-energy…
Bi2Se3 Growth on (001) GaAs Substrates for Terahertz Integrated Systems
Yongchen Liu, Wilder Acuna, Huairuo Zhang +8
Terahertz (THz) technologies have been of interest for many years due to the variety of applications including gas sensing, nonionizing imaging of biological systems, security and…
Light and microwave driven spin pumping across FeGaB-BiSb interface
Vinay Sharma, Weipeng Wu, Prabesh Bajracharya +7
3-D topological insulators (TI) with large spin Hall conductivity have emerged as potential candidates for spintronic applications. Here, we report spin to charge conversion in bil…
Strong coupling between a topological insulator and a III-V heterostructure at terahertz frequency
D. Quang To, Zhengtianye Wang, Q. Dai Ho +8
We probe theoretically the emergence of strong coupling in a system consisting of a topological insulator (TI) and a III-V heterostructure using a numerical approach based on the s…
Electronic properties of the Weyl semimetals CoMnX (X=Si, Ge, Sn)
Abhishek Sharan, Felipe Crasto de Lima, Shoaib Khalid +2
Using first-principles electronic structure calculations, we show that ferromagnetic Heusler compounds CoMnX (X= Si, Ge, Sn) present non-trivial topological characteristics and…
Identifying the fingerprints of topological states by tuning magnetoresistance in a semimetal: the case of topological half-Heusler Pt1-xAuxLuSb
Shouvik Chatterjee, Felipe Crasto de Lima, John A. Logan +18
Topological materials often exhibit remarkably linear, non-saturating magnetoresistance (LMR), which is both of scientific and technological importance. However, the role of topolo…
Exploring In(SeTe) alloys as photovoltaic materials
Wei Li, Xuefen Cai, Nicholas Valdes +4
InSe in the three-dimensional (3D) hexagonal crystal structure with space group (-InSe) has a direct band gap of 1.8 eV and high absorption coeffici…
Electronic correlations in the semiconducting half-Heusler compound FeVSb
Estiaque H. Shourov, Patrick J. Strohbeen, Dongxue Du +8
Electronic correlations are crucial to the low energy physics of metallic systems with localized and states; however, their effect on band insulators and semiconductors is…
Electronic Structure and Small Hole Polarons in YTiO3
Jin Yue, Nicholas F. Quackenbush, Iflah Laraib +10
As a prototypical Mott insulator with ferromagnetic ordering, YTiO3 (YTO) is of great interest in the study of strong electron correlation effects and orbital ordering. Here we rep…
Predicting band gaps and band-edge positions of oxide perovskites using DFT and machine learning
Wei Li, Zigeng Wang, Xia Xiao +4
Density functional theory within the local or semilocal density approximations (DFT-LDA/GGA) has become a workhorse in electronic structure theory of solids, being extremely fast a…
Trivial to nontrivial topology transition in rare-earth pnictides with epitaxial strain
Shoaib Khalid, Anderson Janotti
The combination of magneto-transport and topological properties has brought great attention to rare-earth mono-pnictides semimetals. For some of them, like LaSb, it is unclear whet…
Quantum anomalous Hall effect in two-dimensional magnetic insulator heterojunctions
Jinbo Pan, Jiabin Yu, Yan-Fang Zhang +4
Recent years have witnessed tremendous success in the discovery of topological states of matter. Particularly, sophisticated theoretical methods in time-reversal-invariant topologi…
Controlling magnetoresistance by tuning semimetallicity through dimensional confinement and heteroepitaxy
Shouvik Chatterjee, Shoaib Khalid, Hadass S. Inbar +7
Controlling the electronic properties via bandstructure engineering is at the heart of modern semiconductor devices. Here, we extend this concept to semimetals where, utilizing LuS…