872 citations · 3.4k across the 46 of their papers we have counts for
7 papers · 1 filter
Two-Stage Rotational Disordering of a Molecular Crystal Surface: C60
C. Laforge, D. Passerone, A. B. Harris +2
We propose a two-stage mechanism for the rotational surface disordering phase transition of a molecular crystal, as realized in C fullerite. Our study, based on Monte Carlo…
Direct Observation of the Quantum Energy Gap in S = 1/2 Tetragonal Cuprate Antiferromagnets
K. Katsumata, M. Hagiwara, Z. Honda +9
Using an electron spin resonance spectrometer covering a wide range of frequency and magnetic field, we have measured the low energy excitations of the S=1/2 tetragonal antiferroma…
A complete devil's staircase in the Falicov-Kimball model
C. Micheletti, A. B. Harris, J. M. Yeomans
We consider the neutral, one-dimensional Falicov-Kimball model at zero temperature in the limit of a large electron--ion attractive potential, U. By calculating the general n-ion i…
Complete wetting in the three-dimensional transverse Ising model
A. B. Harris, C. Micheletti, J. M. Yeomans
We consider a three-dimensional Ising model in a transverse magnetic field, and a bulk field . An interface is introduced by an appropriate choice of boundary conditions. At…
DOMAIN WALLS IN THE QUANTUM TRANSVERSE ISING MODEL
Malte Henkel, A. Brooks Harris, Marek Cieplak
We discuss several problems concerning domain walls in the spin Ising model at zero temperature in a magnetic field, , applied in the direction. Some results are al…
Replica Symmetry Breaking in the Critical Behaviour of the Random Ferromagnet
Viktor Dotsenko, A. B. Harris, David Sherrington +1
We study the critical properties of the weakly disordered -component random Heisenberg ferromagnet. It is shown that if the specific heat critical exponent of the pure system is…
Quantum Fluctuations in the Annni Model
A. B. Harris, C. Micheletti, J. M. Yeomans
We obtain the ANNNI model from a Heisenberg model with large single--ion anisotropy energy, , as might be relevant for helical spin systems. We treat quantum fluctuations to low…