Kinetic antiferromagnetism in the triangular lattice.
We show that the motion of a single hole in the infinite-U Hubbard model with frustrated hopping leads to weak metallic antiferromagnetism of kinetic origin. An intimate relationship is demonstrated between the simplest versions of this problem in one and two dimensions, and two of the most subtle many body problems, namely, the Heisenberg Bethe ring in one dimension and the two-dimensional triangular lattice Heisenberg antiferromagnet.
Haerter
Jan O
JO
Physics Department, University of California, Santa Cruz, California 95064, USA.
Shastry
B Sriram
BS