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Universal contact of strongly interacting fermions at finite temperatures
Universal contact strongly interacting fermions finite temperatures
2010/11/23
The recently discovered universal thermodynamic behaviour of dilute, strongly interacting Fermi
gases also implies a universal structure in the many-body pair-correlation function at short distances,...
We analyze a model of mutually-propelled laments suspended in a two-dimensional solvent. The
system undergoes a mean- eld isotropic-nematic transition for large enough lament concentrations and the...
Spin-dependent electronic hybridization in a rope of carbon nanotubes
Spin-dependent electronic hybridization carbon nanotubes
2010/11/24
We demonstrate single electron addition to different strands of a carbon nanotube rope. Anticrossings of anomalous conductance peaks occur in quantum transport measurements through the parallel quantu...
Mapping out the quasi-condensate transition through the 1D-3D dimensional crossover
quasi-condensate transition 1D-3D dimensional crossover
2010/11/23
By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasi-condensate regime throughout the dimension...
Helical modes in carbon nanotubes generated by strong electric fields
Helical modes carbon nanotubes generated
2010/11/23
Helical modes, conducting opposite spins in opposite directions, are shown to exist in metallic
armchair nanotubes in an all-electric setup. This is a consequence of the interplay between spinorbit i...
Quantum rotor theory of spinor condensates in tight traps
Quantum rotor theory of spinor condensates tight traps
2010/11/23
In this work, we theoretically construct exact mappings of many-particle bosonic systems onto
quantum rotor models. In particular, we analyze the rotor representation of spinor Bose-Einstein condensa...
Anisotropic spin Hall effect from first principles
Anisotropic spin Hall effect first principles
2010/11/22
We report on first principles calculations of the anisotropy of the intrinsic spin Hall conductivity (SHC) in nonmagnetic hcp metals and in antiferromagnetic Cr. For most of the metals of this study w...
We performed inelastic neutron scattering on powder sample of the P-doped iron-based super-
conductor BaFe2(As0.65P0.35)2 with Tc = 30 K, whose superconducting (SC) order parameter is
expected to ha...
Spin-dependent Scattering by a Potential Barrier on a Nanotube
Spin-dependent Scattering Potential Barrier on a Nanotube
2010/11/22
The electron spin effects on the surface of a nanotube have been considered through the spin-orbit interaction (SOI), arising from the electron confinement on the surface of the nanotube. This is of t...
Renormalization of the tunnel splitting in a rotating nanomagnet
Renormalization of the tunnel rotating nanomagnet
2010/11/22
We study spin tunneling in a magnetic nanoparticle with biaxial anisotropy that is free to rotate about its anisotropy axis. Exact instanton of the coupled equations of motion is found that connects d...
Polarons and Molecules in a Two-Dimensional Fermi Gas
Polarons Molecules Two-Dimensional Fermi Gas
2010/11/23
We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i)an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity ...
Coulomb interaction effects and electron spin relaxation in the 1d Kondo lattice model
Ludwig-Maximilians-Universit¨at M¨unchen University of Queensland
2010/11/23
We study the effects of the Coulomb interaction in the one dimensional Kondo lattice model on
the phase diagram, the static magnetic susceptibility and electron spin relaxation. We show that onsite C...
Fractionalization in Three-Components Fermionic Atomic Gases in a One-Dimensional Optical Lattice
Fractionalization Three-Components Fermionic Atomic Gases a One-Dimensional Optical Lattice
2010/11/22
We study a three-components fermionic gas loaded in a one-dimensional optical trap at half-
lling. We nd that the system is fully gapped and may order into 8 possible phases: four 2kF
atomic densi...
Comprehensive transport studies of anisotropy and ordering phenomena in quasi-one-dimensional (TMTTF)2X salts (X = PF6, AsF6, SbF6; BF4, ClO4, ReO4)
Comprehensive transport studies of anisotropy ordering phenomena
2010/11/22
The temperature dependent dc resistivity of the quasi-one-dimensional organic salts (TMTTF)2X
(X = PF6, AsF6, SbF6; BF4, ClO4, ReO4) has been measured in all three crystal directions in order to inve...
All Bulk and Boundary Unitary Cubic Curvature Theories in Three Dimensions
Bulk and Boundary Unitary Cubic Curvature Theories Three Dimensions
2010/12/21
We construct all the bulk and boundary unitary cubic curvature parity invariant gravity
theories in three dimensions in (anti)-de Sitter spaces. For bulk unitarity, our construction
is based on the ...