Variational Monte Carlo Study of Electron Differentiation around Mott Transition

Details Variational Monte Carlo Study of Electron Differentiation around Mott Transition Variational Monte Carlo Study of Electron Differentiation around Mott Transition

2008-07-08

arxiv.org/abs/0807.1303v1

J. Phys. Soc. Jpn. 77 (2008) 093703

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1143/JPSJ.77.093703

We study ground-state properties of the two-dimensional Hubbard model at half filling by improving variational Monte Carlo method and by implementing quantum-number projection and multi-variable optimization. The improved variational wave function enables a highly accurate description of the Mott transition and strong fluctuations in metals. We clarify how anomalous metals appear near the first-order Mott transition. The double occupancy stays nearly constant as a function of the on-site Coulomb interaction in the metallic phase near the Mott transition in agreement with the previous unbiased results. This unconventional metal at half filling is stabilized by a formation of ``electron-like pockets'' coexisting with an arc structure, which leads to a prominent differentiation of electrons in momentum space. An abrupt collapse of the ``pocket'' and ``arc'' drives the first-order Mott transition.

Affiliated with

Also associated with

No associations

Rating

Variational Monte Carlo Study of Electron Differentiation around Mott Transition does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Variational Monte Carlo Study of Electron Differentiation around Mott Transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variational Monte Carlo Study of Electron Differentiation around Mott Transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-269254