activity
20072013
most citedOrigin of long-lived oscillations in 2D-spectra of a Quantum Vibronic Model: Electronic vs Vibrational coherence

131 citations · 362 across the 13 of their papers we have counts for

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Showing cond-mat.str-elShow all

5 papers · 1 filter

cond-mat.str-el2010★ 9 cited

Pair Density Waves in coupled doped two-leg Ladders

Javier Almeida, Guillaume Roux, Didier Poilblanc

Motivated by Resonant X-ray scattering experiments in cuprate ladder materials showing charge order modulation of period and 5 at specific hole densities, we investigate mode…

cond-mat.str-el2008★ 9 cited

VBS State Induced by Impurity Frustration in Cr8Ni

J. Almeida, M. A. Martin-Delgado, G. Sierra

We provide a physically meaningful picture of the nature of the ground state of the Cr8Ni compound in the regime where it is a spin singlet. According to this picture, the anisotro…

cond-mat.str-el2008★ 12 cited

Twisted Order Parameter applied to Dimerized Ladders

J. Almeida, M. A. Martin-Delgado, G. Sierra

We apply the twisted order parameter (TOP) for dimerized quantum spin ladders to locate the critical phases that separate gapped phases representing quantum spin liquids of various…

cond-mat.str-el2007★ 16 cited

Critical Lines and Massive Phases in Quantum Spin Ladders with Dimerization

Javier Almeida, M. A. Martin-Delgado, G. Sierra

We determine the existence of critical lines in dimerized quantum spin ladders in their phase diagram of coupling constants using the finite-size DMRG algorithm. We consider both s…

cond-mat.str-el2007★ 24 cited

DMRG study of the Bond Alternating \textbf{S}=1/2 Heisenberg ladder with Ferro-Antiferromagnetic couplings

J. Almeida, M. A. Martin-Delgado, G. Sierra

We obtain the phase diagram in the parameter space and an accurate estimate of the critical line separating the different phases. We show several measuments of the magn…