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Analysis of spin-polaron formation in hund lattices

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Abstract

We consider a one-dimensional Hund lattice model where a conducting band is coupled with localized spins s = 1/2 interacting antiferromagnetically, with coupling constant J, and investigate the ground state phase diagram as a function of both the exchange coupling J and the band filling, n. From spin structure factor measurements we found different evolving magnetic orderings in the ground state related to the particle distribution in the systems, although no charge density waves are formed, as found from density-density correlation function measurements. We study the quasiparticle formation and phase separation using the density-matrix renormalization group method, which is a highly efficient method to investigate quasi-one-dimensional strongly correlated systems.

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Authors and Affiliations

  1. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, 04510, México, D.F., México

    Yesenia Arredondo & Oracio Navarro

  2. Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Coahuila, Carretera Torreón-Matamoros Km. 7.5 Ciudad Universitaria, 27276, Torreón, Coahuila

    Emmanuel Vallejo

  3. Institut Néel, CNRS and Université Joseph Fourier, Boite Postale 166, 38042, Grenoble, France

    Michel Avignon

Authors
  1. Yesenia Arredondo
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  2. Oracio Navarro
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  3. Emmanuel Vallejo
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  4. Michel Avignon
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Corresponding author

Correspondence to Yesenia Arredondo.

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Arredondo, Y., Navarro, O., Vallejo, E. et al. Analysis of spin-polaron formation in hund lattices. Journal of the Korean Physical Society 62, 1504–1507 (2013). https://doi.org/10.3938/jkps.62.1504

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  • DOI: https://doi.org/10.3938/jkps.62.1504

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