Insulating phases of the one-dimensional tJ model with nearest-neighbor repulsive interaction

H Ding, Y Wang - The European Physical Journal B, 2011 - Springer
Using the deformed Hubbard operator approach, we analytically study weak-coupling phase
diagram of the one-dimensional tJV model at half filling. In the case of small deformed …

Coexistence of superconductivity and density wave orders in a one-dimensional correlated system

Y Xu, W Chen, H Ding - Chinese Journal of Physics, 2020 - Elsevier
By the field theory approach, we investigate a one-dimensional correlated electronic system
modelled by the extended Hubbard Hamiltonian including a nearest-neighbor and a next …

Effect of singlet pairing hopping on the one-dimensional extended Hubbard model with spin exchange interaction

HQ Ding, J Zhang - The European Physical Journal B, 2012 - Springer
The ground-state properties of the one-dimensional (1D) tUJ model with singlet pair hopping
interaction are studied in the weak-coupling regime. The analysis of the model with U (1)⊗ …

PHASE DIAGRAM OF ONE-DIMENSIONAL DEFORMED t–J1–J2 MODEL WITH FRUSTRATED EXCHANGE INTERACTION

H Ding, J Zhang - Modern Physics Letters B, 2011 - World Scientific
In this paper, we study the phase diagram of the one-dimensional deformed t–J1–J2 model
with frustrated exchange interaction. The introduction of the deformed parameter ζ softens …

From Insulator to Superconductor in a Modified t-J Chain with Regulated Electron Hopping

H Ding, J Zhang - Journal of Low Temperature Physics, 2017 - Springer
The one-dimensional modified tJ model is investigated analytically by regulating the kinetic
hopping at half filling. The transition from insulator to triplet superconductivity is predicted in …

Quantum Phases of a Deformed Itinerant Electron Model in One Dimension

P Li, H Ding, J Zhang - Chinese Journal of Physics, 2015 - airitilibrary.com
A one-dimensional half-filled deformed itinerant electron model is studied analytically, and
the corresponding quantum phase diagram is obtained via the bosonization and the …