Circulating-current states and ring-exchange interactions in cuprates
نویسندگان
چکیده
منابع مشابه
Circulating current states in bilayer fermionic and bosonic systems.
It is shown that fermionic polar molecules or atoms in a bilayer optical lattice can undergo the transition to a state with circulating currents, which spontaneously breaks the time reversal symmetry. Estimates of relevant temperature scales are given, and experimental signatures of the circulating current phase are identified. Related phenomena in bosonic and spin systems with ring exchange ar...
متن کاملPseudogap and Competing States in Underdoped Cuprates
I shall argue that the high Tc problem is the problem of doping into a Mott insulator. Furthermore, the well documented pseudo-gap phenomenon in underdoped cuprates holds the key to understanding this physics. Phase fluctuation alone cannot explain this phenomenon, but there is a clear need to identify a competing state which lives in the vortex core. The staggered flux state is a good candidat...
متن کاملAntiferromagnetic exchange energies in planar cuprates.
would allow one to verify that the series of micrographs shown in figure 2, a through f, are of the same cell. As shown, the cell in figure 2d has a different orientation from that of the cell in figure 2, e and f. Finally, it should be pointed out that the micrograph in figure If described in the figure legend as a PtK cell appeared in a previous publication (3, figure 2b) described as an L6 m...
متن کاملSuperconducting charge-ordered states in cuprates
Motivated by recent neutron scattering and scanning tunneling microscopy ~STM! experiments on cuprate superconductors, we discuss charge-ordered states, in particular with two-dimensional charge modulation patterns, coexisting with superconductivity. We extend previous studies of a large-N mean-field formulation of the t-J model. In addition to bond-centered superconducting stripe states at low...
متن کاملExchange Boson Dynamics in Cuprates: Optical Conductivity ofHgBa2CuO4þ
ofHgBa2CuO4þ J. Yang,* J. Hwang, E. Schachinger, J. P. Carbotte, R. P. S.M. Lobo, D. Colson, A. Forget, and T. Timusk Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada Institute of Theoretical and Computational Physics, Graz University of Technology, A-8010 Graz, Austria Laboratoire Photons et Matière, CNRS UPR5, LPS-ESPCI, 10 rue Vauquelin, 75231 Paris Cede...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2004
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.70.134407