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.
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Showing 1 to 8 of 8 for “"Octupolar"”.
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Molecular Engineering of Dipolar and Octupolar Non-Linear Optical Materials for Next-Generation Telecommunications
… of organic non-linear optical (NLO) materials, octupolar molecules have the potential to produce far greater NLO effects; moreover, they have the capacity to produce 3-D sensitive NLO phenomena. This PhD explores new classes of dipolar organic and octupolar organometallic materials, where …
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NEW ORGANOMETALLIC COMPLEXES WITH PHOTOLUMINESCENT AND NON LINEAR OPTICAL PROPERTIES
… organic and organometallic compounds. Finally an octupolar tripodal ligand had been prepared which terminates with pyridyl groups that were easily linked to organometallic fragments. Although coordination of our octupolar core to Zn complexes of a commercial porphyrin, or phtalocyanine, did not …
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Exotic Phenomena Emerging from Localized Multipolar Degrees of Freedom
… that hosts electric quadrupolar and magnetic octupolar moments. Using renormalization group methods, we uncover a number of stable non-Fermi liquid ground states. We next examine the nature of these fixed points using boundary conformal field theory techniques, to provide a non-perturbative …
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Surface Friction and Spectroscopic Probes of New Physics with Trapped Ions
… shifts S₁/₂ → D₅/₂, S₁/₂ → D₃/₂, and octupolar shift S₁/₂ → F₇/₂). Deviations from theoretical predictions have been found and indicate higher-order Standard Model effects or even beyond-the-Standard-Model physics. Spectroscopic design and shift results, as well as possible theoretical …
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Exotic phenomena in rare-earth based geometrically frustrated magnets
… results on a RE pyrochlore oxide and candidate octupolar spin-ice, Ce2Sn2O7. The pseudo-spin-1/2 moments in Ce2Sn2O7 are known to possess dipolar-octupolar character and a large parameter space within the phase diagram is theorized to host novel QSL states. Previous powder neutron diffraction …
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Frustration from Frustration: Field Tuning, Vison Crystallisation, and Disorder in Quantum Spin Ice
… that a [111] field applied to a dominantly octupolar quantum spin ice (such as the interesting candidate Ce Hf O ) drives a quantum phase transition into a state which we tentatively call a ‘flux liquid’. Further, I show that the applied magnetic field coherently modulates the emergent QED, …
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LUMINESCENT COMPOUNDS FOR APPLICATIONS IN PHOTONICS
… ones. Compound T1, in spite of being an octupolar structure, was characterized by a moderate cross-section of 190 GM at 587 nm. However, this is only a preliminary result, and T1 was prepared to set and optimize the synthetic procedures to obtain a class of molecules characterized by more …
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Geometric frustration in high spin orbit coupling magnetic materials
… ground state Kramers doublet as having dipole-octupolar form with a significant multipolar character. Heat capacity and magnetic neutron diffuse scattering have ice-like features, but are inconsistent with Monte Carlo simulations of the nearest-neighbor and next-nearest-neighbor dipolar …