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Excitation spectra of square lattice...

Piazza, Bastien Dalla.

Excitation spectra of square lattice antiferromagnetstheoretical explanation of experimental observations /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Excitation spectra of square lattice antiferromagnetsby Bastien Dalla Piazza.
其他題名:	theoretical explanation of experimental observations /
作者:	Piazza, Bastien Dalla.
出版者:	Cham :Springer International Publishing :2016.
面頁冊數:	xvii, 176 p. :ill. (some col.), digital ;24 cm.
Contained By:	Springer eBooks
標題:	Antiferromagnetism.
電子資源:	http://dx.doi.org/10.1007/978-3-319-26419-6
ISBN:	9783319264196$q(electronic bk.)

Excitation spectra of square lattice antiferromagnetstheoretical explanation of experimental observations /
Piazza, Bastien Dalla.

Excitation spectra of square lattice antiferromagnetstheoretical explanation of experimental observations /[electronic resource] :by Bastien Dalla Piazza. - Cham :Springer International Publishing :2016. - xvii, 176 p. :ill. (some col.), digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

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.

ISBN: 9783319264196$q(electronic bk.)

Standard No.: 10.1007/978-3-319-26419-6doiSubjects--Topical Terms:

229787
Antiferromagnetism.

LC Class. No.: QC761.5

Dewey Class. No.: 538.44

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520 $a 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.
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