Meta-Plaquette Expansion for the Triplet Excitation Spectrum in CaV4O9
Zheng Weihong, J. Oitmaa, C. J. Hamer
Abstract
We study antiferromagnetic, S=1/2 Heisenberg models with nearest and second neighbor interactions on the one-fifth depleted square lattice which describes the spin degrees of freedom in the spin-gap system CaV4O9. The meta-plaquette expansion for the triplet excitation spectrum is extended to fifth order, and the results are compared with experimental data on CaV4O9. We attempt to locate the phase boundary between magnetically ordered and gapped phases.
Create a lesson
Related papers
Disorder-Induced Griffiths like Phase and Charge Localization in Sr2FeRuO6
Koustav Pal, Shuvendu Ghosh, I. Das
Interplay of electric field and electronic correlations in pairing competition in bilayer nickelates
Yanmei Cai, Yicheng Xiong, Ying Liang et al.
Beyond Kitaev exchange: Γ'-driven magnetism in Ag3LiRh2O6
Efrain Insuasti Pazmino, Shi Feng, Ramesh Dhakal et al.
Role of Gd 5d-Au 5d hybridization for the magnetic properties of Au-Al-Gd quasicrystal approximants
Goro Nozue, Hidenori Fujiwara, Satoru Hamamoto et al.
Room-Temperature Metallic 2D Ferromagnetism Stabilized by Quantum Metric
Teng-Fei Ying, Jianqi Zhong, Songyuan Geng et al.
Multiple Superconducting Phases under Pressure for Different Field Directions in UTe2
Dai Aoki, Atsushi Miyake, Ai Nakamura et al.