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19912026
Showing 2002 · cond-mat.str-elShow all

9 papers · 2 filters

cond-mat.str-el2002★ 8 cited

Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet KCuF

J. Chakhalian, R. F. Kiefl, R. Miller +7

We report muon spin rotation measurements of the local magnetic susceptibility around a positive muon in the paramagnetic state of the quasi one-dimensional spin 1/2 antiferromagne…

cond-mat.str-el2002

The ubiquitous 1100 charge ordering in organic charge-transfer solids

S. Mazumdar, R. T. Clay, D. K. Campbell

Charge and spin-orderings in the 1/4-filled organic CT solids are of strong interest, especially in view of their possible relations to organic superconductivity. We show that the…

cond-mat.str-el2002★ 55 cited

Dimerization induced by the RKKY interaction

J. C. Xavier, R. G. Pereira, E. Miranda +1

We report the presence of spin dimerization in the ground state of the one dimensional Kondo lattice model at quarter filling. The emergence of this new phase of the Kondo lattice…

cond-mat.str-el2002★ 4 cited

Metallic Continuum Quantum Ferromagnets at Finite Temperature

Antonio H. Castro Neto, Marcello B. Silva Neto

We study via renormalization group (RG) and large N methods the problem of continuum SU(N) quantum Heisenberg ferromagnets (QHF) coupled to gapless electrons. We establish the phas…

cond-mat.str-el2002★ 21 cited

A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling

E. Novais, E. Miranda, A. H. Castro Neto +1

We establish a mapping of a general spin-fermion system in one dimension into a classical generalized Coulomb gas. This mapping allows a renormalization group treatment of the anis…

cond-mat.str-el2002★ 18 cited

Anomalous Quantum Diffusion at the Superfluid-Insulator Transition

Claudio Chamon, Chetan Nayak

We consider the problem of the superconductor-insulator transition in the presence of disorder, assuming that the fermionic degrees of freedom can be ignored so that the problem re…

cond-mat.str-el2002★ 49 cited

Neel order in doped quasi one-dimensional antiferromagnets

Sebastian Eggert, Ian Affleck, Matthew D. P. Horton

We study the Neel temperature of quasi one-dimensional S=1/2 antiferromagnets containing non-magnetic impurities. We first consider the temperature dependence of the staggered susc…

cond-mat.str-el2002★ 67 cited

Charge ordering in theta-(BEDT-TTF)_2 X materials

R. T. Clay, S. Mazumdar, D. K. Campbell

We investigate theoretically charge ordered states on the anisotropic triangular lattice characteristic of the theta-(BEDT-TTF)_2 X materials. Using exact diagonalization studies,…

cond-mat.str-el2002★ 34 cited

Stripe as an effective one-dimensional band of composite excitations

A. L. Chernyshev, S. R. White, A. H. Castro Neto

The microscopic structure of a charge stripe in an antiferromagnetic insulator is studied within the t-Jz model using analytical and numerical approaches. We demonstrate that a str…