TY - JOUR
T1 - Mott phase in polarized two-component atomic Fermi lattice gas
AU - Machida, M.
AU - Okumura, M.
AU - Yamada, S.
AU - Deguchi, T.
AU - Ohashi, Y.
AU - Matsumoto, H.
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - We investigate effects of pseudospin population imbalance on Mott phases in one-dimensional trapped two-component atomic Fermi gases loaded on optical lattices based on the repulsive Hubbard model in harmonic traps. By using the density-matrix renormalization-group method, we numerically calculate density profiles of each component and clarify the pseudospin magnetism. Consequently, we find that all the features from weakly imbalance to fully polarized cases are well described by S=1/2 antiferromagnetic Heisenberg chain under magnetic field. These results indicate that the Mott phases offer experimental stages for studying various interacting spin systems.
AB - We investigate effects of pseudospin population imbalance on Mott phases in one-dimensional trapped two-component atomic Fermi gases loaded on optical lattices based on the repulsive Hubbard model in harmonic traps. By using the density-matrix renormalization-group method, we numerically calculate density profiles of each component and clarify the pseudospin magnetism. Consequently, we find that all the features from weakly imbalance to fully polarized cases are well described by S=1/2 antiferromagnetic Heisenberg chain under magnetic field. These results indicate that the Mott phases offer experimental stages for studying various interacting spin systems.
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U2 - 10.1103/PhysRevB.78.235117
DO - 10.1103/PhysRevB.78.235117
M3 - Article
AN - SCOPUS:58149267712
SN - 1098-0121
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 23
M1 - 235117
ER -