• Corpus ID: 237453676

The two-dimensional $t$-$t^{\prime}$ Holstein model

  title={The two-dimensional \$t\$-\$t^\{\prime\}\$ Holstein model},
  author={Maykon V. Ara'ujo and Jos'e Pimentel de Lima and Sandro Sorella and Natanael C. Costa},
The competition and interplay between charge-density wave and superconductivity have become a central subject for quasi-2D compounds. Some of these materials, such as the transition-metal dichalcogenides, exhibit strong electron-phonon coupling, an interaction that may favor both phases, depending on the external parameters, such as hydrostatic pressure. In view of this, here we analyze the single-band t-t′ Holstein model in the square lattice, adding a next-nearest neighbor hopping t′ in order… 

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