3 papers
cond-mat.mes-hall2004
Vortices and Edge Reconstruction in Small Quantal Systems at High Angular Momenta
M. Toreblad, Y. Yu, S. M. Reimann +2
Vortices can form when finite quantal systems are set to rotate. In the limit of small particle numbers the vortex formation in a harmonically trapped fermion system, with repulsiv…
cond-mat.mes-hall2003
Energy spectrum, persistent current and electron localization in quantum rings
M. Manninen, P. Koskinen, M. Koskinen +3
Energy spectra of quasi-one-dimensional quantum rings with a few electrons are studied using several different theoretical methods. Discrete Hubbard models and continuum models are…
cond-mat.mes-hall2001
Fractional Periodicity of Persistent Currents: A Signature of Broken Internal Symmetry
P. Singha Deo, P. Koskinen, M. Koskinen +1
We show from the symmetries of the many body Hamiltonian, cast into the form of the Heisenberg (spin) Hamiltonian, that the fractional periodicities of persistent currents are due…