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- Max Planck Institute for Gravitational PhysicsDE458 papers
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9 papers · 2 filters
Spin and density excitations in the triangular-lattice - model with multiple-spin exchange interactions: He on graphite
K. Seki, T. Shirakawa, Y. Ohta
Using an exact diagonalization technique on small clusters, we study spin and density excitations of the triangular-lattice - model with multiple-spin exchange interactions,…
Spin noise spectroscopy in GaAs (110) quantum wells: Access to intrinsic spin lifetimes and equilibrium electron dynamics
Georg M. Müller, Michael Römer, Dieter Schuh +3
In this letter, the first spin noise spectroscopy measurements in semiconductor systems of reduced effective dimensionality are reported. The non-demolition measurement technique g…
Feshbach resonances in an ultracold Li and Rb mixture
C. Marzok, B. Deh, C. Zimmermann +4
We report on the observation of five Feshbach resonances in collisions between ultracold Li and Rb atoms in the absolute ground state mixture where both species are in t…
Magnetic dipolar interaction in an atomic Bose Einstein condensate interferometer
M. Fattori, G. Roati, B. Deissler +6
We study the role played by the magnetic dipole interaction in an atomic interferometer based on an alkali Bose-Einstein condensate with tunable scattering length. We tune the s-wa…
Resonant spin-changing collisions in spinor Fermi gases
N. Bornemann, P. Hyllus, L. Santos
Spin-changing collisions in trapped Fermi gases may acquire a resonant character due to the compensation of quadratic Zeeman effect and trap energy. These resonances are absent in…
Landau levels of cold atoms in non-Abelian gauge fields
A. Jacob, P. Ohberg, G. Juzeliunas +1
The Landau levels of cold atomic gases in non-Abelian gauge fields are analyzed. In particular we identify effects on the energy spectrum and density distribution which are purely…