Title Excitation Spectra of Square Lattice Antiferromagnets : Theoretical Explanation of Experimental Observations Author(s) Dalla Piazza, Bastien Publication Cham, Springer International Publishing, 2016. Description XVII, 176 p. 71 illus., 57 illus. in color : online resource Abstract Note This thesis presents a qualitative advance in our understanding of quantum effects in layered magnetic materials. The nearest neighbor Heisenberg ferromagnetic ranks among the oldest and most fundamental models of quantum many body effects. It has long been established that in one dimension quantum fluctuations lead to a quantum disordered ground state with fractional excitations called spinons." In two dimensions, the ground state of the Heisenberg model displays static order and to first approximation the dynamics can be described as semi-classical spin waves. Through theoretical advances the author demonstrates that at high energy around particular points in reciprocal space these semi-classical spin-waves deconfine into fractional excitations akin to the one-dimensional spinons. He thereby provides the first explanation of a long-standing experimental observation. In the second half of his thesis Bastien Dalla Piazza develops a unified description of the magnetic excitation spectra of a range of cuprate parent compounds to the high temperature superconductors ISBN,Price 9783319264196 Keyword(s) 1. EBOOK 2. EBOOK - SPRINGER 3. Electronic materials 4. MAGNETIC MATERIALS 5. MAGNETISM 6. Magnetism, Magnetic Materials 7. Optical and Electronic Materials 8. OPTICAL MATERIALS 9. QUANTUM COMPUTERS 10. Quantum Information Technology, Spintronics 11. QUANTUM PHYSICS 12. SPINTRONICS Item Type eBook Multi-Media Links Please Click here for eBook Circulation Data Accession#   Call# Status Issued To Return Due On Physical Location I10324     On Shelf