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Optical properties of the Holstein-t–J model from dynamical mean-field theory

✍ Scribed by E. Cappelluti; S. Ciuchi; S. Fratini

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
221 KB
Volume
403
Category
Article
ISSN
0921-4526

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✦ Synopsis

We employ dynamical mean-field theory to study the optical conductivity sðoÞ of one hole in the Holstein-t-J model. We provide an exact solution for sðoÞ in the limit of infinite connectivity. We apply our analysis to Nd 2Àx Ce x CuO 4 . We show that our model can explain many features of the optical conductivity in this compounds in terms of magnetic/lattice polaron formation.

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Dynamical properties of cluster in the H
Dynamical properties of cluster in the Hamiltonian Mean Field model
✍ Hiroko Koyama; Tetsuro Konishi; Stefano Ruffo 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 160 KB

We investigate some properties of the trapping/untrapping mechanism of a single particle into/outside the cluster in the Hamiltonian Mean Field model. Particle are clustered in the ordered low-energy phase in this model. However, when the number of particles is finite, some particles can acquire a h