Fermions and bosons : excitons in strongly correlated materials

Leiden Repository

Fermions and bosons : excitons in strongly correlated materials

Title: Fermions and bosons : excitons in strongly correlated materials
Author: Rademaker, Louk
Publisher: Lorentz Center, Faculty of Science, Leiden University
Issue Date: 2013-12-11
Keywords: Excitons
Strongly correlated electron systems
Theoretical condensed matter physics
Abstract: This thesis involves excitonic physics in bilayers of strongly correlated electron materials. The fermionic bilayer extended Hubbard model is studied by means of mean field theory and Determinant Quantum Monte Carlo simulations. A bosonic low-energy effective theory is developed, called the exciton t-J model. The phase diagram and the elementary excitations of this model are investigated. Surprisingly, the excitons are predicted to exhibit Ising confinement physics in the antiferromagnetic phase. In the exciton superfluid phase the magnetic triplon modes borrow kinetic energy from the excitons.
Description: Promotores: J. Zaanen, H. Hilgenkamp
With Summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Rademaker, L., 2013, Doctoral Thesis, Leiden University
Series/Report no.: Casimir PhD Series;2013-25
ISBN: 9789085931669
Handle: http://hdl.handle.net/1887/22839
 

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