Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS2.6k papers
- Centre National de la Recherche ScientifiqueFR2k papers
- Massachusetts Institute of TechnologyUS1.9k papers
- University of FloridaUS1.8k papers
- Carnegie Mellon UniversityUS1.7k papers
- Princeton UniversityUS1.7k papers
- University of RochesterUS1.7k papers
- Purdue University West LafayetteUS1.6k papers
- Johns Hopkins UniversityUS1.6k papers
- University of Maryland, College ParkUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- University of California, Santa BarbaraUS1.6k papers
12 papers · 2 filters
Elastic effects of vacancies in strontium titanate: Short- and long-range strain fields, elastic dipole tensors, and chemical strain
Daniel A. Freedman, D. Roundy, T. A. Arias
We present a study of the local strain effects associated with vacancy defects in strontium titanate and report the first calculations of elastic dipole tensors and chemical strain…
Electrically Driven Light Emission from Individual CdSe Nanowires
Yong-Joo Doh, Kristin N. Maher, Lian Ouyang +3
We report electroluminescence (EL) measurements carried out on three-terminal devices incorporating individual n-type CdSe nanowires. Simultaneous optical and electrical measuremen…
Absence of Critical Thickness in an Ultrathin Improper Ferroelectric Film
Na Sai, Craig J. Fennie, Alexander A. Demkov
We study the ferroelectric stability and surface structural properties of an oxygen-terminated hexagonal YMnO ultra-thin film using density functional theory. Under an open cir…
Emission of Terahertz Radiation from SiC
Jared H. Strait, Paul A. George, Jahan Dawlaty +4
We report the emission of strong coherent broadband terahertz radiation from 6H-Silicon-Carbide (SiC) excited with optical pulses. The measured terahertz spectral signal-to-noise r…
Penrose Matching Rules from Realistic Potentials in a Model System
Sejoon Lim, M. Mihalkovic, C. L. Henley
We exhibit a toy model of a binary decagonal Al-Co quasicrystal -- closely related to actual structures -- in which realistic pair potentials yield a ground state which appears to…
Thickness Estimation of Epitaxial Graphene on SiC using Attenuation of Substrate Raman Intensity
Shriram Shivaraman, M. V. S. Chandrashekhar, John J. Boeckl +1
A simple, non-invasive method using Raman spectroscopy for the estimation of the thickness of graphene layers grown epitaxially on silicon carbide (SiC) is presented, enabling simu…
Impermeable Atomic Membranes from Graphene Sheets
J. Scott Bunch, Scott S. Verbridge, Jonathan S. Alden +4
We demonstrate that a monolayer graphene membrane is impermeable to standard gases including helium. By applying a pressure difference across the membrane, we measure both the elas…
Epitaxial checkerboard arrangement of nanorods in ZnMnGaO4 films studied by x-ray diffraction
S. M. O'Malley, P. L. Bonanno, K. H. Ahn +4
The intriguing nano-structural properties of a ZnMnGaO4 film epitaxially grown on MgO (001) substrate have been investigated using synchrotron radiation-based x-ray diffraction. Th…
Electrical transport and ferromagnetism in Ga1-xMnxAs synthesized by ion implantation and pulsed-laser melting
M. A. Scarpulla, R. Farshchi, P. R. Stone +4
We present a detailed investigation of the magnetic and magnetotransport properties of thin films of ferromagnetic Ga1-xMnxAs synthesized using ion implantation and pulsed-laser me…
A comparison of finite element and atomistic modelling of fracture
Valerie R Coffman, James P. Sethna, Gerd Heber +4
Are the cohesive laws of interfaces sufficient for modelling fracture in polycrystals using the cohesive zone model? We examine this question by comparing a fully atomistic simulat…
Empirical oscillating potentials for alloys from ab-initio fits
M. Mihalkovič, C. L. Henley, M. Widom +1
By fitting to a database of ab-initio forces and energies, we can extract pair potentials for alloys, with a simple six-parameter analytic form including Friedel oscillations, whic…
Measurement of the Optical Absorption Spectra of Epitaxial Graphene from Terahertz to Visible
Jahan M. Dawlaty, Shriram Shivaraman, Jared Strait +6
We present experimental results on the optical absorption spectra of epitaxial graphene from the visible to the terahertz (THz) frequency range. In the THz range, the absorption is…