منابع مشابه
Theory of spin excitations in undoped and underdoped cuprates
We consider the magnetic properties of high Tc cuprates from a gauge theory point of view, with emphasis on the underdoped regime. Underdoped cuprates possess certain antiferromagnetic correlations, as evidenced, for example, by different temperature dependence of the Cu and O site NMR relaxation rates, that are not captured well by slave boson mean field theories of the t-J model. We show that...
متن کاملMetallic charge stripes in cuprates
Some recent evidence for the existence of dynamic, metallic stripes in the 214-family of cuprates is reviewed. The mechanism of stripe pinning is considered, and changes in the charge density within stripes between the pinned and dynamic phases is discussed. From a purely experimental perspective, dynamic charge stripes are fully compatible with nodal “quasiparticles” and other electronic prope...
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 کاملCheckerboard-Like Charge Ordering in Underdoped Cuprates
Recent scanning tunneling microscopy measurements which indicate the formation of two-dimensional density modulations at some doping levels in cuprates were reviewed. A model of hard-core bosons which represent bound hole pairs in the two-dimensional doped antiferromagnet was discussed in the context of these experimental results. By means of an exact numerical diagonalization it was shown that...
متن کاملSuperexchange coupling and spin susceptibility spectral weight in undoped monolayer cuprates
A systematic inelastic neutron scattering study of the superexchange interaction in three different undoped monolayer cuprates (La2CuO4, Nd2CuO4 and Pr2CuO4) has been performed using conventional triple axis technique. We deduce the in-plane antiferromagnetic (AF) superexchange coupling J which actually presents no simple relation versus crystallographic parameters. The absolute spectral weight...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2014
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.90.235136