00906nam0 2200253 450 00001047420180704123320.020080428d1918----km-y0itay50------baengUSa-------001yy<<A >>treatise on navigation and nautical astronomyincluding the theory of compass deviations, prepared for use as a textbook at the U.S. Naval Academyby W. C. P. Muir4th ed., rev. and enl.AnnapolisThe United States Naval Institute1918XVI, 784 p.ill.20 cmNavigazioneAstronomia nautica623.8918Muir,William Carpenter Pendleton631080ITUNIPARTHENOPE20080428RICAUNIMARC000010474623.89/15123PISTTreatise on navigation and nautical astronomy1203643UNIPARTHENOPE04122nam 22007815 450 991025463710332120200704023217.03-319-26419-210.1007/978-3-319-26419-6(CKB)3710000000571719(EBL)4313082(SSID)ssj0001606946(PQKBManifestationID)16317075(PQKBTitleCode)TC0001606946(PQKBWorkID)14895723(PQKB)11382547(DE-He213)978-3-319-26419-6(MiAaPQ)EBC4313082(PPN)191706450(EXLCZ)99371000000057171920160106d2016 u| 0engur|n|---|||||txtccrExcitation Spectra of Square Lattice Antiferromagnets Theoretical Explanation of Experimental Observations /by Bastien Dalla Piazza1st ed. 2016.Cham :Springer International Publishing :Imprint: Springer,2016.1 online resource (189 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Description based upon print version of record.3-319-26418-4 Includes bibliographical references.Introduction -- Variational Study of the Square Lattice Anti-ferromagnet Magnetic Zone-Boundary Anomaly -- Modeling the Spin-Wave Dispersion of Insulating Cuprate Materials.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053MagnetismMagnetic materialsQuantum computersSpintronicsQuantum physicsOptical materialsElectronic materialsMagnetism, Magnetic Materialshttps://scigraph.springernature.com/ontologies/product-market-codes/P25129Quantum Information Technology, Spintronicshttps://scigraph.springernature.com/ontologies/product-market-codes/P31070Quantum Physicshttps://scigraph.springernature.com/ontologies/product-market-codes/P19080Optical and Electronic Materialshttps://scigraph.springernature.com/ontologies/product-market-codes/Z12000Magnetism.Magnetic materials.Quantum computers.Spintronics.Quantum physics.Optical materials.Electronic materials.Magnetism, Magnetic Materials.Quantum Information Technology, Spintronics.Quantum Physics.Optical and Electronic Materials.538.44Dalla Piazza Bastienauthttp://id.loc.gov/vocabulary/relators/aut805088MiAaPQMiAaPQMiAaPQBOOK9910254637103321Excitation Spectra of Square Lattice Antiferromagnets2541011UNINA