Results 1 to 10 of about 410,108 (121)
Defect Formation with Bulk Fields [PDF]
Physical Review D, 2006 It has recently been realized that brane-antibrane annihilation (a possible explanation for ending inflation) may result in defect formation, due to the dynamics of the tachyon field.
Guy D. Moore +3 more
core +4 more sources
Do columnar defects produce bulk pinning? [PDF]
Physical Review Letters, 1999 From magneto-optical imaging performed on heavy-ion irradiated YBaCuO single crystals, it is found that at fields and temperatures where strong single vortex pinning by individual irradiation-induced amorphous columnar defects is to be expected, vortex ...
B. Holzapfel +31 more
core +5 more sources
Premelting at Defects Within Bulk Colloidal Crystals [PDF]
Science, 2005 Premelting is the localized loss of crystalline order at surfaces and defects at temperatures below the bulk melting transition. It can be thought of as the nucleation of the melting process. Premelting has been observed at the surfaces of crystals but not within.
Alsayed, Ahmed M. +4 more
openaire +4 more sources
Vacancy Defects in Bulk and Quasi-Bulk GaN Crystals
Crystals, 2022 In-grown vacancy defects in bulk and quasi-bulk GaN crystals have been extensively studied with positron annihilation spectroscopy. High concentrations of Ga-vacancy-related defects are found irrespective of the growth method used in crystals with a high O contamination or intentional O doping, and they act as the dominant compensating native defect ...
openaire +3 more sources
Topological Defects and Bulk Melting of Hexagonal Ice [PDF]
The Journal of Physical Chemistry B, 2005 We use classical molecular dynamics combined with the recently developed metadynamics method [A. Laio and M. Parrinello, Procs. Natl. Acad. Sci. USA 99, 20 (2002)] to study the process of bulk melting in hexagonal ice. Our simulations show that bulk melting is mediated by the formation of topological defects which preserve the coordination of the ...
Donadio, Davide +2 more
openaire +3 more sources
Nanoscale gold pillars strengthened through dislocation starvation [PDF]
, 2006 It has been known for more than half a century that crystals can be made stronger by introducing defects into them, i.e., by strain-hardening. As the number of defects increases, their movement and multiplication is impeded, thus strengthening the ...
Greer, Julia R., Nix, William D.
core +1 more source
Extended Defects in the Potts-Percolation Model of a Solid: Renormalization Group and Monte Carlo Analysis [PDF]
, 2009 We extend the model of a 2$d$ solid to include a line of defects. Neighboring atoms on the defect line are connected by ?springs? of different strength and different cohesive energy with respect to the rest of the system.
A. A. Migdal +5 more
core +6 more sources
Scattering in Twisted Yangians [PDF]
, 2015 We study the bulk and boundary scattering of the sl(N) twisted Yangian spin chain via the solution of the Bethe ansatz equations in the thermodynamic limit. Explicit expressions for the scattering amplitudes are obtained and the factorization of the bulk
Avan, Jean +2 more
core +3 more sources
Bulk and Surface Tunneling Hydrogen Defects in Alumina [PDF]
Physical Review Letters, 2013 We perform ab initio calculations of hydrogen-based tunneling defects in alumina to identify deleterious two-level systems (TLS) in superconducting qubits. The defects analyzed include bulk hydrogenated Al vacancies, bulk hydrogen interstitial defects, and a surface OH rotor.
Holder, Aaron M. +3 more
openaire +3 more sources
Effective response theory for zero energy Majorana bound states in three spatial dimensions [PDF]
, 2015 We propose a gravitational response theory for point defects (hedgehogs) binding Majorana zero modes in (3+1)-dimensional superconductors. Starting in 4+1 dimensions, where the point defect is extended into a line, a coupling of the bulk defect texture ...
Lopes, Pedro L. S. +2 more
core +2 more sources