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Remanence effects in the electrical resistivity of spin glasses
Remanence effects electrical resistivity of spin glasses
2010/11/24
We have measured the low temperature electrical resistivity of Ag : Mn mesoscopic spin glasses prepared by ion implantation with a concentration of 700 ppm. As expected, we observe
a clear maximum in...
Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
Spin Torque Ferromagnetic Resonance Spin Hall Effect
2010/11/22
We demonstrate that the spin Hall effect in a thin film with strong spin-orbit scattering
can excite magnetic precession in an adjacent ferromagnetic film. The flow of alternating current through a P...
Instability and Vortex Rings Dynamics in a Three-Dimensional Superfluid Flow Through a Constriction
Instability Vortex Rings Three-Dimensional Superfluid Flow
2010/11/25
We study the instability of a superfluid flow through a constriction in three spatial dimensions.We consider a Bose-Einstein condensate at zero temperature in two different geometries: a straight wave...
Coarsening Kinetics of a Two Dimensional O(2) Ginzburg-Landau Model: Effect of Reversible Mode Coupling
Coarsening Kinetics Two Dimensional O(2) Ginzburg-Landau Model
2010/11/25
We investigate, via numerical simulations, the phase ordering kinetics of a two-dimensional
soft-spin O(2) Ginzburg-Landau model when a reversible mode coupling is included via the
conserved conjuga...
Quasi-Two-Dimensional Fermi Surfaces and Coherent Interlayer Transport in KFe$_2$As$_2$
Quasi-Two-Dimensional Fermi Surfaces Coherent Interlayer Transport
2010/11/19
We report the results of the angular-dependent magnetoresistance oscillations (AMROs), which
can determine the shape of bulk Fermi surfaces in quasi-two-dimensional (Q2D) systems, in a highly hole-do...
Properties of the approximate Yang-Mills ground-state wave functional in 2+1 dimensions
Lattice gauge theory Quantum chromodynamics Confinement
2011/1/14
We review properties and lattice evidence in support of the recently proposed temporal-gauge Yang–Mills vacuum wave functional in 2+1 dimensions.
Scaling of noise correlations in one-dimensional lattice hard-core boson systems
Scaling of noise correlations one-dimensional lattice hard-core boson systems
2010/11/24
Noise correlations are studied for systems of hard-core bosons in one-dimensional lattices. We use an exact numerical approach based on the Bose-Fermi mapping and properties of Slater determinants.We ...
Type-dependent irreversible stochastic spin models for gene regulatory networks
Stochastic spin model gene regulatory network biochemical pathway repressilator
2010/11/25
There are many different mathematical setups to model the dynamics of gene regulatory networks (GRNs),most based on Boolean networks or chemical kinetics ideas. Here we present an approach to model GR...
U(1) $\times$ U(1) / Z$_2$ Kosterlitz-Thouless transition of the Larkin-Ovchinnikov phase in an anisotropic two-dimensional system
Kosterlitz-Thouless transition anisotropic two-dimensional system
2010/11/25
We study Kosterlitz-Thouless (KT) transitions of the Larkin-Ovchinnikov (LO) phase for a twodimensional system composed of coupled one-dimensional tubes of fermions. The LO phase here
is characterize...
Single-charge rotating black holes in four-dimensional gauged supergravity
Single-charge black holes four-dimensional gauged supergravity
2010/12/21
We consider four-dimensional U(1)4 gauged supergravity, and obtain asymptotically AdS4,
non-extremal, charged, rotating black holes with one non-zero U(1) charge. The thermodynamic
quantities are co...
Our micromechanical experiments show that at physiological temperatures type I collagen fibril
has several basic features of the glassy state. The transition out of this state [softening transition] ...
States of a chiral 2d CFT
States chiral 2d CFT
2010/12/21
We study the dual description of the self-dual orbifold, a locally AdS3 space-time which is a circle fibration over AdS2 and arises as the near-horizon limit of the extreme BTZ black hole.
Electron interaction-driven insulating ground state in Bi2Se3 topological insulators in the two dimensional limit
Electron interaction-driven two dimensional limit
2010/11/18
We report a transport study of ultrathin Bi2Se3 topological insulators with thickness from
one quintuple layer to six quintuple layers grown by molecular beam epitaxy. At low
temperatures, the film ...
Quantum Destruction of Spiral Order in Two Dimensional Frustrated Magnets
Quantum Destruction Spiral Order Two Dimensional Frustrated Magnets
2010/11/25
We study the fate of S = 1/2 spiral ordered two dimensional quantum magnets when disordered
by quantum fluctuations. The topological point defects of the spiral, the Z2 vortices, play a crucial role ...
Scaling and self-averaging in the three-dimensional random-field Ising model
Scaling self-averaging three-dimensional random-field Ising model
2010/11/25
We investigate, by means of extensive Monte Carlo simulations, the magnetic critical behavior of the three-dimensional bimodal random-field Ising model at the strong disorder regime.We present results...