114 citations · 271 across the 7 of their papers we have counts for
7 papers
Optical probe of ferroelectric order in bulk and thin film perovskite titanates
M. Rössle, C. N. Wang, P. Marsik +8
We have measured the temperature dependence of the direct band gap, , in SrTiO and BaTiO and related materials with quantum-paraelectric and ferroelectric prope…
Adiabatic continuity and broken symmetry in many-electron systems: a variational perspective
Dionys Baeriswyl
Variational wave functions are very useful for describing the panoply of ground states found in interacting many-electron systems. Some particular trial states are "adiabatically"…
Superconductivity and antiferromagnetism in the two-dimensional Hubbard model: a variational study
D. Eichenberger, D. Baeriswyl
A variational ground state of the repulsive Hubbard model on a square lattice is investigated numerically for an intermediate coupling strength (U = 8t) and for moderate sizes (fro…
Exactly soluble isotropic spin-1/2 ladder models
V. Gritsev, D. Baeriswyl
The undeformed limit of the dilute two-color braid-monoid algebra gives a natural basis for the description of spin-1/2 ladder models, and allows different Baxterization Ansatze. B…
Dielectric catastrophe at the Mott transition
C. Aebischer, D. Baeriswyl, R. M. Noack
We study the Mott transition as a function of interaction strength in the half-filled Hubbard chain with next-nearest-neighbor hopping t' by calculating the response to an external…
Comment on "Density Functional Simulation of a Breaking Nanowire"
C. A. Stafford, J. Burki, D. Baeriswyl
In a recent Letter, Nakamura et al. [Phys. Rev. Lett. 82, 1538 (1999)] described first principles calculations for a breaking Na nanocontact. Their system consists of a periodic on…