8 citations · 11 across the 3 of their papers we have counts for
4 papers
Hyperfine dependent -values of Mn I lines in the 1.49 1.80 m H-band
Martin Andersson, Jon Grumer, Nils Ryde +5
The three Mn I lines at 17325, 17339 and 17349 Å~are among the 25 strongest lines () in the H-band. They are all heavily broadened due to hyperfine structure and the…
Staggered flux and stripes in doped antiferromagnets
Martin Andersson, Stellan Ostlund
We have numerically investigated whether or not a mean-field theory of spin textures generate fictitious flux in the doped two dimensional -model. First we consider the proper…
Fictitious fluxes in doped antiferromagnets
Stellan Ostlund, Martin Andersson
In a tight binding model of charged spin-1/2 electrons on a square lattice, a fully polarized ferromagnetic spin configuration generates an apparent U(1) flux given by times t…
Density Matrix Renormalization Group of Gapless Systems
Martin Andersson, Magnus Boman, Stellan Ostlund
We investigate convergence of the density matrix renormalization group (DMRG) in the thermodynamic limit for gapless systems. Although the DMRG correlations always decay exponentia…