68 citations · 135 across the 3 of their papers we have counts for
5 papers · 1 filter
Mean Field study of the heavy fermion metamagnetic transition
S. Viola Kusminskiy, K. S. D. Beach, A. H. Castro Neto +1
We investigate the evolution of the heavy fermion ground state under application of a strong external magnetic field. We present a richer version of the usual hybridization mean fi…
Quantum phase transitions beyond the dilute Bose gas limit
Valeri N. Kotov, D. X. Yao, A. H. Castro Neto +1
We study a Heisenberg S=1/2 ring-exchange antiferromagnet which exhibits a quantum phase transition from a spontaneously dimerized (valence bond solid) phase to a magnetically orde…
Functional Renormalization Group Analysis of the Half-filled One-dimensional Extended Hubbard Model
Ka-Ming Tam, Shan-Wen Tsai, David K. Campbell
We study the phase diagram of the half-filled one-dimensional extended Hubbard model at weak coupling using a novel functional renormalization group (FRG) approach. The FRG method…
Comment on ``Ground State Phase Diagram of a Half-Filled One-Dimensional Extended Hubbard Model''
A. W. Sandvik, P. Sengupta, D. K. Campbell
In Phys. Rev. Lett. 89, 236401 (2002), Jeckelmann argued that the recently discovered bond-order-wave (BOW) phase of the 1D extended Hubbard model does not have a finite extent in…
Novel coexisting density wave ground state in strongly correlated, two-dimensional electronic materials
S. Mazumdar, R. T. Clay, D. K. Campbell
Two-dimensional (2D) strongly correlated electron systems underlie many of the most important phenomena in contemporary condensed matter physics, including the Quantum Hall Effect…