5 papers
Toroid Current States in Doped Mott Insulators
Dmitry I. Iudin, Alexander P. Protogenov
The free energy bounds for inhomogeneous current states in doped antiferromagnetic insulators and spatial configurations of spin and charge degrees of freedom in lightly and heavil…
Toroid Current States in Doped Antiferromagnetic Insulators
Igor S. Aranson, Dmitry I. Iudin, Alexander P. Protogenov
This paper has been withdrawn due to a request of the first author to exclude his name from the author list and to motivate sufficiently the appliclication of the used model for an…
Gapless Phase in the XYZ Spin-1/2 Chain in a Magnetic Field and the Quantum ANNNI Chain
Amit Dutta, Diptiman Sen
We study the XYZ spin-1/2 chain placed in a magnetic field pointing along the x-axis. We use bosonization and a renormalization group analysis to show that the model has a non-triv…
Semiclassical Theory of Integrable and Rough Andreev Billiards
W. Ihra, M. Leadbeater, J. L. Vega +1
We study the effect on the density of states in mesoscopic ballistic billiards to which a superconducting lead is attached. The expression for the density of states is derived in t…
Direct exchange in the edge-sharing spin-1/2 compound MgVO_3
I. Chaplygin, R. Hayn, K. Koepernik
Bandstructure calculations with different spin arrangement for the spin-chain compound MgVO_3 have been performed, and paramagnetic as well as magnetic solutions with ferro- and an…