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
16 papers · 2 filters
Pressure-Induced Structure Transitions in Eu Metal to 92 GPa
W. Bi, Y. Meng, R. S. Kumar +6
Synchrotron x-ray diffraction experiments have been carried out on Eu metal at ambient temperature to pressures as high as 92 GPa (0.92 Mbar). Following the well-known bcc-to-hcp t…
Pt-Decorated PdCo@Pd/C Core-Shell Nanoparticles with Enhanced Stability and Electrocatalytic Activity for Oxygen Reduction Reaction
Deli Wang, Huolin L. Xin, Yingchao Yu +4
A simple method for the preparation of PdCo@Pd core-shell nanoparticles supported on carbon has been developed using an adsorbate-induced surface segregation effect. The stability…
Optical Properties of (SrMnO3)n/(LaMnO3)2n superlattices: an insulator-to-metal transition observed in the absence of disorder
A. Perucchi, L. Baldassarre, A. Nucara +6
We measure the optical conductivity of (SrMnO3)n/(LaMnO3)2n superlattices (SL) for n=1,3,5, and 8 and 10 < T < 400 K. Data show a T-dependent insulator to metal transition (IMT) fo…
Mass coupling and ^3$He in a torsion pendulum
R. G. Bennett, N. Zhelev, A. D. Fefferman +5
We present results of the and period shift, , for He confined in a 98% nominal open aerogel on a torsion pendulum. The aerogel is compressed uniaxially by 10% alon…
Extended Depth of Field for High Resolution Scanning Transmission Electron Microscopy
Robert Hovden, Huolin L. Xin, David A. Muller
Aberration-corrected scanning transmission electron microscopes (STEM) provide sub-angstrom lateral resolution; however, the large convergence angle greatly reduces the depth of fi…
Coherent soft-mode phonon generation and detection in ultrathin SrTiO3 grown directly on silicon
Cheng Cen, Maitri P. Warusawithana, Darrell G. Schlom +1
Time-resolved two color pump-probe polarization spectroscopy was performed at room temperature on SrTiO3 films grown directly on Si with film thickness varying from 2 nm to 7.8 nm.…
Quantum transport in mesoscopic He films: experimental study of the interference of bulk and boundary scattering
P. Sharma, A. Córcoles, R. G. Bennett +4
We discuss the mass transport of a degenerate Fermi liquid He film over a rough surface, and the film momentum relaxation time, in the framework of theoretical predictions. In…
Imaging Grains and Grain Boundaries in Single-Layer Graphene: An Atomic Patchwork Quilt
Pinshane Y. Huang, Carlos S. Ruiz-Vargas, Arend M. van der Zande +8
The properties of polycrystalline materials are often dominated by the size of their grains and by the atomic structure of their grain boundaries. These effects should be especiall…
The structure, energy, and electronic states of vacancies in Ge nanocrystals
Kenneth Bayus, O. Paz, S. P. Beckman
The atomic structure, energy of formation, and electronic states of vacancies in H-passivated Ge nanocrystals are studied by density functional theory (DFT) methods. The competitio…
Recovering magnetization distributions from their noisy diffraction data
Ne-Te Duane Loh, Stefan Eisebitt, Samuel Flewett +1
We study, using simulated experiments inspired by thin film magnetic domain patterns, the feasibility of phase retrieval in X-ray diffractive imaging in the presence of intrinsic c…
Accuracy of Quantum Monte Carlo Methods for Point Defects in Solids
William D. Parker, John W. Wilkins, Richard G. Hennig
Quantum Monte Carlo approaches such as the diffusion Monte Carlo (DMC) method are among the most accurate many-body methods for extended systems. Their scaling makes them well suit…
Phase transformation in Si from semiconducting diamond to metallic beta-Sn phase in QMC and DFT under hydrostatic and anisotropic stress
R. G. Hennig, A. Wadehra, K. P. Driver +3
Silicon undergoes a phase transition from the semiconducting diamond phase to the metallic beta-Sn phase under pressure. We use quantum Monte Carlo calculations to predict the tran…
Basis set construction for molecular electronic structure theory: Natural orbital and Gauss-Slater basis for smooth pseudpotentials
F. R. Petruzielo, Julien Toulouse, C. J. Umrigar
A simple yet general method for constructing basis sets for molecular electronic structure calculations is presented. These basis sets consist of atomic natural orbitals from a mul…
Si-compatible candidates for high-K dielectrics with the Pbnm perovskite structure
Sinisa Coh, Tassilo Heeg, J. H. Haeni +9
We analyze both experimentally (where possible) and theoretically from first-principles the dielectric tensor components and crystal structure of five classes of Pbnm perovskites.…
Bending crystals: Emergence of fractal dislocation structures
Yong S. Chen, Woosong Choi, Stefanos Papanikolaou +1
We provide a minimal continuum model for mesoscale plasticity, explaining the cellular dislocation structures observed in deformed crystals. Our dislocation density tensor evolves…
Atomic displacements in the "charge-ice" pyrochlore Bi2Ti2O7 studied by neutron total scattering
D. P. Shoemaker, A. L. Hector, C. J. Fennie +3
The oxide pyrochlore BiTiOO is known to be associated with large displacements of Bi and O atoms from their ideal crystallographic positions. Neutron…