163 citations · 799 across the 22 of their papers we have counts for
9 papers · 1 filter
Orbitally-Resolved Mechanical Properties of Solids from Maximally Localized Wannier Functions
Ethan T. Ritz, Guru Khalsa, Hsin-Yu Ko +3
We present a technique for partitioning the total energy from a semi-local density functional theory calculation into contributions from individual electronic states in a localized…
Optical Control of Ferroaxial Order
Zhiren He, Guru Khalsa
Materials that exhibit ferroaxial order hold potential for novel multiferroic applications. However, in pure ferroaxials, domains are not directly coupled to stress or static elect…
Coherent control of the translational and point group symmetries of crystals with light
Guru Khalsa, Jeffrey Z. Kaaret, Nicole A. Benedek
We use theory and first-principles calculations to explore mechanisms for control of the translational and point group symmetries of crystals in ultrafast optical experiments. We f…
A Strategy to Identify Materials Exhibiting a Large Nonlinear Phononics Response: Tuning the Ultrafast Structural Response of LaAlO with Pressure
Jeffrey Z. Kaaret, Guru Khalsa, Nicole A. Benedek
We use theory and first-principles calculations to investigate how structural changes induced by ultrafast optical excitation of infrared-active phonons change with hydrostatic pre…
Momentum-resolved electronic band structure and offsets in an epitaxial NbN/GaN superconductor/semiconductor heterojunction
Tianlun Yu, John Wright, Guru Khalsa +9
The electronic structure of heterointerfaces play a pivotal role in their device functionality. Recently, highly crystalline ultrathin films of superconducting NbN have been integr…
Ultrafast control of material optical properties via the infrared resonant Raman effect
Guru Khalsa, Nicole A. Benedek, Jeffrey Moses
The Raman effect -- inelastic scattering of light by lattice vibrations (phonons) -- produces an optical response closely tied to a material's crystal structure. Here we show that…
An unexplored MBE growth mode reveals new properties of superconducting NbN
John Wright, Celesta Chang, Dacen Waters +8
Accessing unexplored conditions in crystal growth often reveals remarkable surprises and new regimes of physical behavior. In this work, performing molecular beam epitaxy of the te…
The New Nitrides: Layered, Ferroelectric, Magnetic, Metallic and Superconducting Nitrides to Boost the GaN Photonics and Electronics Eco-System
Debdeep Jena, Ryan Page, Joseph Casamento +7
The nitride semiconductor materials GaN, AlN, and InN, and their alloys and heterostructures have been investigated extensively in the last 3 decades, leading to several technologi…
d0 Perovskite-Semiconductor Electronic Structure
R. Bistritzer, G. Khalsa, A. H. MacDonald
We address the low-energy effective Hamiltonian of electron doped d0 perovskite semiconductors in cubic and tetragonal phases using the k*p method. The Hamiltonian depends on the s…