14 papers
Emergent Pair Density Wave Order Across a Lifshitz Transition
Luhang Yang, Elbio Dagotto, Adrian E. Feiguin
We numerically investigate the telltale signs of pair-density-wave order (PDW) in the Kondo-Heisenberg chain by focusing on the momentum resolved spectrum in different parameter re…
Tunable Superconductivity in 1313-LaNiO: Suppressed under Compression and Possible Pairing under Tension
Yang Zhang, Ling-Fang Lin, Adriana Moreo +2
Motivated by recent progress in the 1313-LaNiO nickelate thin films (Nie et al., Nature {\bf 652}, 628 (2026)), we systematically investigate the effects of both compre…
Intertwined charge, spin, and orbital degrees of freedom under electronic correlations in the one-dimensional Fe chalcogenide chain
Yang Zhang, Pontus Laurell, Gonzalo Alvarez +4
Motivated by recent developments in the study of quasi-one-dimensional iron systems with Fe, we comprehensively study the Fe chalcogenide chain system. Based on first…
Spin-charge separation in two-leg t-J ladders
Luhang Yang, Elbio Dagotto
Spin-charge separation is a hallmark of one-dimensional fermionic systems, yet its realization in higher dimensions remains an open question. To address this issue, we investigate…
Superconductivity in Ruddlesden-Popper nickelates: a review of recent progress, focusing on thin films
Yang Zhang, Ling-Fang Lin, Thomas A. Maier +1
The discovery of superconductivity with Tc ~ 80 K in the nickelate Ruddlesden-Popper bilayer La3Ni2O7 at high pressure has opened a new platform for unconventional superconductivit…
Kinetic obstruction to pairing in the doped Kitaev-Heisenberg ladder
Bradraj Pandey, Bo Xiao, Satoshi Okamoto +4
We investigate the hole-doped Kitaev-Heisenberg (--) model on a two-leg ladder geometry using the density-matrix renormalization group (DMRG). We first consider the behavi…