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Showing 2000 · cond-mat.str-elShow all

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cond-mat.str-el2000★ 40 cited

Structural Phase Transition in the 2D Spin Dimer Compound SrCu2(BO3)2

K. Sparta, G. J. Redhammer, P. Roussel +11

A displacive, 2nd order structural phase transition at Ts=395 K from space group I`4 2 m below Ts to I 4/m c m above Ts has been discovered in the two-dimensional spin dimer compou…

cond-mat.str-el2000★ 476 cited

d-wave superconductivity and Pomeranchuk instability in the two-dimensional Hubbard model

Christoph J. Halboth, Walter Metzner

We present a systematic stability analysis for the two-dimensional Hubbard model, which is based on a new renormalization group method for interacting Fermi systems. The flow of ef…

cond-mat.str-el2000★ 95 cited

Collective Singlet Excitations and Evolution of Raman Spectral Weights in the 2D Spin Dimer Compound SrCu2(BO3)2

Peter Lemmens, M. Grove, M. Fischer +5

We present a Raman light scattering study of the two-dimensional quantum spin system SrCu2(BO3)2 and show that the magnetic excitation spectrum has a rich structure, including seve…

cond-mat.str-el2000★ 55 cited

Luttinger liquids with boundaries: Power-laws and energy scales

V. Meden, W. Metzner, U. Schollwoeck +3

We present a study of the one-particle spectral properties for a variety of models of Luttinger liquids with open boundaries. We first consider the Tomonaga-Luttinger model using b…