Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"quantum magnetism"”.
-
Quantum magnetism in cerium-based binary compounds
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
-
Neutron scattering and thermodynamic studies of quantum magnetism on the kagomé lattice
… can exhibit novel magnetic ground states such as quantum spin liquids and spin nematics. Thermodynamic measurements were performed on the antiferromagnetic kagome materials MgxCu₄-x(OH)₆ Cl₂ , featuring S = 1/2 moments. These measurements reveal magnetic ordering at low values of x that is …
-
Geometrically frustrated quantum magnets
(cont.) more general lessons on frustrated quantum magnetism. At the end, we demonstrate some new mathematical tools on two other frustrated two-dimensional systems, and summarize our conclusions, with an outlook to remaining open problems.
-
Realization of Bose-Einstein condensation with Lithium-7 atoms
… Einstein condensate as a first step to study quantum magnetism in optical lattice. The techniques used in this experiment include Zeeman slowing, magneto-optical trapping (MOT), gray molasses, static magnetic trapping, evaporative cooling, optical dipole trapping (ODT), etc. The apparatus has …
-
Magnetic super-exchange with ultra cold atoms in spin dependent optical lattices
… behind high temperature superconductivity and quantum magnetism. This thesis will focus on trapping cold bosonic atoms in spin dependent optical lattices to engineer a system that behaves according to the Hubbard model. By loading the atoms into a state dependent lattice, it may be possible to …
-
Coexistence and Competition of Superconductivity and Magnetism
… and competition of superconductivity and magnetism. Initially, an overview of the subject is given with descriptions of various compounds which show unusual forms of both phenomena. This is followed by an analysis of the basic theoretical concepts behind both superconductivity and …
-
Thermometry and cooling of ultracold atoms in an optical lattice
… the lower limit of this thermometer is set by quantum magnetic ordering effects. The dynamic response of this system to changes in magnetic field gradient was studied, both in the weak and strong lattice regimes. The result of these studies was the development of spin gradient demagnetization …
-
Spin-obit coupling in optical superlattices
Quantum simulation is emerging as an exciting and active frontier in atomic physics. It allows us not only to verify existing models with high precision, but also to engineer novel systems with strong correlations and exotic topologies. Recent efforts have been made to include synthetic gauge …
-
Quantum critical matter: Casimir pairing, emergent orders and topological defects
… critical phenomena in two- and three dimensional quantum materials. Specifically we consider high temperature superconductors, dimerized quantum magnets and frustrated magnets. First, motivated by the recent discovery of a magnetic quantum critical point in hole-doped cuprates, we study the …
-
A complex of interactions in rare-earth based quantum honeycomb magnets
Quantum spin liquids (QSLs) represent an exotic state of matter characterized by long-range quantum entanglement and fractionalized excitations. Although predicted theoretically by models such as the Kitaev honeycomb model, experimentally verifying these states in real materials remains a …