Research topics in more details
Here you can find more detailed description of some of my recent research topics.
Spatially anisotropic frustrated antiferromagnets:
competition between long range magnetic and dimer orders. Triangular, checkerboard, pyrochlore,
kagome and J1-J2 models.
Magnetic field versus temperature phase diagram
Elementary excitations of frustrated magnets: spinons, magnons, triplons. Neutron scattering in Cs2CuCl4.
Rotons in excitation spectra of triangular lattice antiferromagnet: strong
renormalization of dispersion (1/S effect) in non-collinear magnets; finite lifetime of
magnons due to decay into two-particle continuum.
Magnetization physics of triangular antiferromagnet:
M=1/3 plateau in
Effects due to non-commutativity of spin-orbital (Dzyaloshinskii-Moriya)
and magnetic fields:
stabilization of spin density wave in one dimension. |
Spin-orbit-induced interaction between spins in the absence of exchange:
spin analogue of van der Waals interaction. Implications for Wigner crystal
and quantum computation.
Generation of spin current by Coulomb drag.
Quantum wires: charge-density wave versus superconducting pair tunneling.
Staggered DM chains OS note on backscattering-improved RG for interchain interaction, pdf file