Broad line-width of antiferromagnetic spinwave due to electrons correlation
arXiv:1707.03523 · doi:10.7566/JPSJ.86.124705
Abstract
We study magnetic excitations in a bilayer of an antiferromagnetic (AF) insulator and a correlated metal, in which double occupancy is forbidden. The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling. The electron correlation in the correlated metal is treated by the Gutzwiller approximation, which renormalizes the hopping integrals by g_t as proportional to the hole density. The linewidth of the AF spin wave excitations originates from particle-hole excitations in the correlated metal. By increasing the correlation effect, i.e., by decreasing g_t, it is found that the linewidth at low energies increases inversely proportional to g_t. The present results will also be useful for bilayers of a metal and ferrimagnet.
arXiv comment8 pages, 10 figures
References in corpus (24)
- Spin waves and electronic interactions in La2CuO4
- Theory of the Spin Seebeck Effect
- Quantum Magnetic Excitations from Stripes in Copper-Oxide Superconductors
- Intense paramagnon excitations in a large family of high-temperature superconductors
- Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
- Critical suppression of spin Seebeck effect by magnetic fields
- Two energy scales in the spin excitations of the high-T_c superconductor LaSrCuO
- Anomalous High-Energy Spin Excitations in La2CuO4
- Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
- High-Tc Superconductivity and Antiferromagnetism in Multilayered Copper Oxides - A New Paradigm of Superconducting Mechanism -
- The Relation of Neutron Incommensurability to Electronic Structure in High Temperature Superconductors
- Spin-Wave Lifetimes Throughout the Brillouin Zone
- Magnetic excitations and their anisotropy in YBCO: slave-boson mean-field analysis of bilayer t-J model
- The emergence of coherent magnetic excitations in the pseudogap phase of La2-xSrxCuO4
- Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics
- Néel and singlet RVB orders in the t-J model
- Electronic States and Superconductivity in Multi-layer High-Tc Cuprates
- Non-Landau damping of magnetic excitations in systems with localized and itinerant electrons
- Effects of antiferromagnetic planes on the superconducting properties of multilayered high-Tc cuprates
- Charge Imbalance Effects on Interlayer Hopping and Fermi Surfaces in Multilayered High-T_c Cuprates
- Neutron spin-echo study of the critical dynamics of spin-5/2 antiferromagnets in two and three dimensions
- Multilayer cuprate superconductors as possible systems described by resonating-valence-bond and antiferromagnetic orders
- Theory of Antiferromagnetic Order in High-Tc Oxides: An Approach Based on Ginzburg-Landau Expansion
- Inhomogeneous Electronic Distribution in High-Tc Cuprates