Browsing by Author "Allais, Andrea"

Now showing items 1-7 of 7

    • Auxiliary-boson and DMFT studies of bond ordering instabilities of t-J-V models on the square lattice 

      Allais, Andrea; Bauer, Johannes; Sachdev, Subir (Springer Science + Business Media, 2014)
      We examine the influence of strong on-site Coulomb interactions on instabilities of the metallic state on the square lattice to general forms of bond order. The Mott correlations are accounted for by the auxiliary-boson ...

    • Confinement transition to density wave order in metallic doped spin liquids 

      Patel, Aavishkar Apoorva; Chowdhury, Debanjan; Allais, Andrea; Sachdev, Subir (American Physical Society (APS), 2016)
      Insulating quantum spin liquids can undergo a confinement transition to a valence bond solid via the condensation of topological excitations of the associated gauge theory. We extend the theory of such transitions to ...

    • Connecting high-field quantum oscillations to zero-field electron spectral functions in the underdoped cuprates 

      Allais, Andrea; Chowdhury, Debanjan; Sachdev, Subir (Nature Publishing Group, 2014)
      The nature of the pseudogap regime of cuprate superconductors at low hole density remains unresolved. It has a number of seemingly distinct experimental signatures: a suppression of the paramagnetic spin susceptibility at ...

    • Density wave instabilities in a correlated two-dimensional metal 

      Allais, Andrea; Bauer, Johannes; Sachdev, Subir (American Physical Society (APS), 2014)
      Motivated by recent experimental evidence of charge order in the pseudogap phase of cuprates, we perform a variational analysis of spin-singlet density wave ordering in metals with antiferromagnetic interactions on the ...

    • Direct phase-sensitive identification of a d-form factor density wave in underdoped cuprates 

      Fujita, K.; Hamidian, M. H.; Edkins, S. D.; Kim, C. K.; Kohsaka, Y.; Azuma, M.; Takano, M.; Takagi, H.; Eisaki, H.; Uchida, S.-i.; Allais, Andrea; Lawler, M. J.; Kim, E.-A.; Sachdev, Subir; Davis, J. C. S. (Proceedings of the National Academy of Sciences, 2014)
      The identity of the fundamental broken symmetry (if any) in the underdoped cuprates is unresolved. However, evidence has been accumulating that this state may be an unconventional density wave. Here we carry out site-specific ...

    • Quantum dimer model for the pseudogap metal 

      Punk, Matthias; Allais, Andrea; Sachdev, Subir (Proceedings of the National Academy of Sciences, 2015)
      We propose a quantum dimer model for the metallic state of the hole-doped cuprates at low hole density, p. The Hilbert space is spanned by spinless, neutral, bosonic dimers and spin S=1/2S=1/2, charge +e+e fermionic dimers. ...

    • Spectral function of a localized fermion coupled to the Wilson-Fisher conformal field theory 

      Allais, Andrea; Sachdev, Subir (American Physical Society (APS), 2014)
      We describe the dynamics of a single fermion in a dispersionless band coupled to the 2+1 dimensional conformal field theory (CFT) describing the quantum phase transition of a bosonic order parameter with N components. The ...