41 citations · 65 across the 3 of their papers we have counts for
5 papers
η-Exponents in the one dimensional antiferromagnetic Heisenberg model with next to nearest neighbour coupling
C. Gerhardt, A. Fledderjohann, E. Aysal +3
We investigate the critical exponents associated with the singularities in the longitudinal and transverse structure factors of the one dimensional antiferroma…
Metamagnetism in the XXZ model with next-to-nearest-neighbor coupling
C. Gerhardt, K. -H. Mütter, H. Kröger
We investigate groundstate energies and magnetization curves in the one dimensional XXZ-model with next to nearest neighbour coupling and anisotropy () at…
Soft modes, Gaps and Magnetization Plateaus in 1D Spin-1/2 Antiferromagnetic Heisenberg Models
A. Fledderjohann, C. Gerhardt, M. Karbach +2
We study the one-dimensional spin-1/2 model with nearest and next-to-nearest-neighbor couplings exposed to a homogeneous magnetic field and a dimer field with period an…
Critical properties of 1-D spin 1/2 antiferromagnetic Heisenberg model
J. F. Audet, A. Fledderjohann, C. Gerhardt +4
We discuss numerical results for the 1-D spin 1/2 antiferromagnetic Heisenberg model with next-to-nearest neighbour coupling and in the presence of an uniform magnetic field. The m…
Critical properties of the one-dimensional spin-1/2 antiferromagnetic Heisenberg model in the presence of a uniform field
A Fledderjohann, C Gerhardt, K H Mutter +2
In the presence of a uniform field the one-dimensional spin- antiferromagnetic Heisenberg model develops zero frequency excitations at field-dependent 'soft mode' mome…