703 citations · 2.5k across the 14 of their papers we have counts for
14 papers
Mechanical investigations of composite cathode degradation in all-solid-state-batteries
Shafee Farzanian, Imtiaz Shozib, Nikhil Sivadas +3
Despite ongoing efforts aimed at increasing energy density in all-solid-state-batteries, the optimal composite cathode morphology, which requires minimal volume change, small void…
Scale-free switching of polarization in the layered ferroelectric material CuInPS
N. Sivadas, Bobby G. Sumpter, P. Ganesh
Using first-principles calculations we model the out-of-plane switching of local dipoles in CuInPS (CIPS) that are largely induced by Cu off-centering. Previously, a cohere…
Anharmonic stabilization of ferrielectricity in CuInPSe
Nikhil Sivadas, Peter Doak, P. Ganesh
Using first-principles calculations and group-theory based models, we study the stabilization of ferrielectricity (FiE) in CuInPSe. We find that the FiE ground state is sta…
Direct Visualization of Trimerized States in 1T'-TaTe
Ismail El Baggari, Nikhil Sivadas, Gregory M. Stiehl +4
Transition-metal dichalcogenides containing tellurium anions show remarkable charge-lattice modulated structures and prominent interlayer character. Using cryogenic scanning transm…
Pressure-controlled interlayer magnetism in atomically thin CrI3
Tingxin Li, Shengwei Jiang, Nikhil Sivadas +9
Stacking order can significantly influence the physical properties of two-dimensional (2D) van der Waals materials. The recent isolation of atomically thin magnetic materials opens…
Current-Induced Torques with Dresselhaus Symmetry Due to Resistance Anisotropy in 2D Materials
Gregory M. Stiehl, David MacNeill, Nikhil Sivadas +7
We report measurements of current-induced torques in heterostructures of Permalloy (Py) with TaTe, a transition-metal dichalcogenide (TMD) material possessing low crystal symme…
Spin Seebeck imaging of spin-torque switching in antiferromagnetic Pt/NiO heterostructures
Isaiah Gray, Takahiro Moriyama, Nikhil Sivadas +10
As electrical control of Néel order opens the door to reliable antiferromagnetic spintronic devices, understanding the microscopic mechanisms of antiferromagnetic switching is cruc…
Stacking-Dependent Magnetism in Bilayer CrI
Nikhil Sivadas, Satoshi Okamoto, Xiaodong Xu +2
We report the connection between the stacking order and magnetic properties of bilayer CrI using first-principles calculations. We show that the stacking order defines the magn…
Tuning Ising superconductivity with layer and spin-orbit coupling in two-dimensional transition-metal dichalcogenides
Sergio C. de la Barrera, Michael R. Sinko, Devashish P. Gopalan +8
Systems that simultaneously exhibit superconductivity and spin-orbit coupling are predicted to provide a route toward topological superconductivity and unconventional electron pair…
Van der Waals Engineering of Ferromagnetic Semiconductor Heterostructures for Spin and Valleytronics
Ding Zhong, Kyle L. Seyler, Xiayu Linpeng +11
The integration of magnetic material with semiconductors has been fertile ground for fundamental science as well as of great practical interest toward the seamless integration of i…
Gate-controllable magneto-optic Kerr effect in layered collinear antiferromagnets
Nikhil Sivadas, Satoshi Okamoto, Di Xiao
Using symmetry arguments and a tight-binding model, we show that for layered collinear anti- ferromagnets, magneto-optic effects can be generated and manipulated by controlling cry…
Magnetic ground state of semiconducting transition metal trichalcogenide monolayers
Nikhil Sivadas, Matthew W. Daniels, Robert H. Swendsen +2
Layered transition metal trichalcogenides with the chemical formula have attracted recent interest as potential candidates for two-dimensional magnets. Using first-principl…
Oxygen Vacancies on SrO-terminated SrTiO3(001) Surfaces studied by Scanning Tunneling Spectroscopy
Wattaka Sitaputra, Nikhil Sivadas, Marek Skowronski +2
The electronic structure of SrTiO3(001) surfaces was studied using scanning tunneling spectroscopy and density-functional theory. With high dynamic range measurements, an in-gap tr…
Thickness Dependent Carrier Density at the Surface of SrTiO3 (111) Slabs
N. Sivadas, H. Dixit, Valentino R. Cooper +1
We investigate the surface electronic structure and thermodynamic stability of the SrTiO3 (111) slabs using density functional theory. We observe that, for Ti-terminated slabs it i…