J. Richter

activity

19992008

most citedMagnetization plateaus in frustrated antiferromagnetic quantum spin models

184 citations · 918 across the 18 of their papers we have counts for

collaborators

Showing 2008Show all

3 papers · 1 filter

cond-mat.str-el2008★ 27 cited

The sawtooth chain: From Heisenberg spins to Hubbard electrons

J. Richter, O. Derzhko, A. Honecker

We report on recent studies of the spin-half Heisenberg and the Hubbard model on the sawtooth chain. For both models we construct a class of exact eigenstates which are localized d…

cond-mat.str-el2008★ 70 cited

Effect of anisotropy on the ground-state magnetic ordering of the spin-half quantum $J_{1}^{X X Z}$ -- $J_{2}^{X X Z}$ model on the square lattice

R. F. Bishop, P. H. Y. Li, R. Darradi +2

We study the zero-temperature phase diagram of the 2D quantum $J_{1}^{X X Z}$ -- $J_{2}^{X X Z}$ spin-1/2 anisotropic Heisenberg model on the square lattice. In particular, the effects o…

cond-mat.str-el2008★ 7 cited

Enhanced low-temperature entropy and flat-band ferromagnetism in the t-J model on the sawtooth lattice

A. Honecker, J. Richter

Using the example of the sawtooth chain, we argue that the t-J model shares important features with the Hubbard model on highly frustrated lattices. The lowest single-fermion band…

The sawtooth chain: From Heisenberg spins to Hubbard electrons

Effect of anisotropy on the ground-state magnetic ordering of the spin-half quantum J1XXZ​--J2XXZ​ model on the square lattice

Enhanced low-temperature entropy and flat-band ferromagnetism in the t-J model on the sawtooth lattice

Effect of anisotropy on the ground-state magnetic ordering of the spin-half quantum $J_{1}^{X X Z}$ -- $J_{2}^{X X Z}$ model on the square lattice