Emergence of One-Dimensional Physics in the Distorted Shastry-Sutherland Lattice
|Date/Time:||Tuesday, 29 Mar 2011 - Thursday, 31 Mar 2011|
|Location:||ROOM 19, PHYSICS Hall|
|Channel:||Condensed Matter Physics|
Max-Planck-Institut fur Physik komplexer Systeme, Notnitzer Straße 38, 01187 Dresden, Germany
Motivated by the on-going investigation of SrCu2(BO3)2 under pressure,
we study a variant of the two-dimensional Shastry-Sutherland (SS) spin-1/2 model with two types of dimers.
In a large parameter range. This modification induces a dimensional reduction at low energies, with nearly decoupled
effective S=1 Haldane chains forming along one of the diagonals of the lattice.
We also present evidence that the intermediate plaquette solid phase
of the undistorted SS model remains stable in a finite region of the phase diagram
In collaboration with:
M. Moliner (Karlsruhe Institute of Technology) & F. Mila (Ecole Polytechnique Federale de Lausanne)