Striped superconductors: how spin, charge and superconducting orders intertwine in the cuprates

E Berg, E Fradkin, SA Kivelson… - New Journal of …, 2009 - iopscience.iop.org
Recent transport experiments in the original cuprate high temperature superconductor, La
2− x Ba x CuO 4, have revealed a remarkable sequence of transitions and crossovers that …

Dislocations and vortices in pair-density-wave superconductors

DF Agterberg, H Tsunetsugu - Nature Physics, 2008 - nature.com
With the groundbreaking work of Fulde, Ferrell, Larkin and Ovchinnikov, it was realized that
superconducting order can also break translational invariance, leading to a phase in which …

Theory of the striped superconductor

E Berg, E Fradkin, SA Kivelson - Physical Review B—Condensed Matter and …, 2009 - APS
We define a distinct phase of matter, a pair-density wave (PDW), in which the
superconducting order parameter ϕ (r ⃗, r ⃗′) varies periodically as a function of position …

Revealing the topological nature of the bond order wave in a strongly correlated quantum system

S Julià-Farré, D González-Cuadra, A Patscheider… - Physical Review …, 2022 - APS
We investigate the topological properties of the bond order wave phase arising in the
extended Fermi-Hubbard model. In particular, we uncover a topological sector, which …

Quantum simulation of correlated-hopping models with fermions in optical lattices

MD Liberto, CE Creffield, GI Japaridze, CM Smith - Physical Review A, 2014 - APS
By using a modulated magnetic field in a Feshbach resonance for ultracold fermionic atoms
in optical lattices, we show that it is possible to engineer a class of models usually referred to …

Charge and spin gaps in the ionic Hubbard model with density-dependent hopping

OAM Segura, K Hallberg, AA Aligia - Physical Review B, 2023 - APS
We calculate the charge gap Δ EC and the spin gap Δ ES of the ionic Hubbard chain
including electron-hole symmetric density-dependent hopping. The vanishing of Δ EC (Δ …

Interacting second-order topological insulators in one-dimensional fermions with correlated hopping

A Montorsi, U Bhattacharya, D González-Cuadra… - Physical Review B, 2022 - APS
Higher-order topological crystalline phases in low-dimensional interacting quantum systems
represent a challenging and largely unexplored research topic. Here, we derive a …

Probing spontaneously symmetry-broken phases with spin-charge separation through noise correlation measurements

K Gallego-Lizarribar, S Julià-Farré, M Lewenstein… - Physical Review …, 2024 - APS
Spontaneously symmetry-broken (SSB) phases are locally ordered states of matter
characterizing a large variety of physical systems. Because of their specific ordering, their …

Nonlocal order parameters for the 1D Hubbard model

A Montorsi, M Roncaglia - Physical review letters, 2012 - APS
We characterize the Mott-insulator and Luther-Emery phases of the 1D Hubbard model
through correlators that measure the parity of spin and charge strings along the chain. These …

Phase diagram of the ionic Hubbard model with density-dependent hopping

P Roura-Bas, AA Aligia - Physical Review B, 2023 - APS
We obtain the quantum phase diagram of the ionic Hubbard model including electron-hole
symmetric density-dependent hopping. The boundaries of the phases are determined by …