- AutorIn
- Christoph Waidacher
- Titel
- Charge properties of cuprates: ground state and excitations
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:swb:14-998985918593-73513
- Datum der Einreichung
- 20.10.1999
- Datum der Verteidigung
- 17.03.2000
- Abstract (EN)
- This thesis analyzes charge properties of (undoped) cuprate compounds from a theoretical point of view. The central question considered here is: How does the dimensionality of the CU-O sub-structure influence its charge degrees of freedom? The model used to describe the Cu-O sub-structure is the three- (or multi-) band Hubbard model. Analytical approaches are employed (ground-state formalism for strongly correlated systems, Mori-Zwanzig projection technique) as well as numerical simulations (Projector Quantum Monte Carlo, exact diagonalization). Several results are compared to experimental data. The following materials have been chosen as candidates to represent different Cu-O sub-structures: Bi2CuO4 (isolated CuO4 plaquettes), Li2CuO2 (chains of edge-sharing plaquettes), Sr2CuO3 (chains of corner-sharing plaquettes), and Sr2CuO2Cl2 (planes of plaquettes). Several results presented in this thesis are valid for other cuprates as well. Two different aspects of charge properties are analyzed: 1) Charge properties of the ground state 2) Charge excitations. (gekürzte Fassung)
- Freie Schlagwörter (DE)
- nicht angegeben
- Freie Schlagwörter (EN)
- core level photoemission spectroscopy, dimensionality, multi band Hubbard model, projection technique, quantum Monte Carlo, strongly correlated electrons
- Klassifikation (DDC)
- 29
- Klassifikation (RVK)
- UP 2200
- Normschlagwörter (GND)
- Cuprate, Elektrische Ladung, Niederdimensionales System
- GutachterIn
- Prof. Dr. Klaus Becker
- Prof. Peter Fulde
- Prof. ... von der Linden
- BetreuerIn
- Prof. Dr. Klaus Becker
- Verlag
- Technische Universität Dresden, Dresden
- URN Qucosa
- urn:nbn:de:swb:14-998985918593-73513
- Veröffentlichungsdatum Qucosa
- 03.03.2000
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis