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Article
Interface Roughness of Quantum Wells Studied by Time-Resolved Photoluminescence
Optical properties of GaAs-Al0 5Ga0 5As multiple quantum wells affected by interface roughness have been investigated by timeresolved photoluminescence. The interface roughness affects on exciton dynamics is show...
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Article
Field and Temperature Dependent Suspension Studies of High Temperature Superconductors
We have employed a novel variable-temperature, variable-field/field-gradient cryogenic levitometer, previously used in levitation experiments, to study the suspension properties of the thallium-based high temp...
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Article
Neutron Scattering Study of Layered Silicates Pillared with Alkylandnonium Ions
Incoherent, inelastic neutron scattering has been used to study the vibrational spectra of tetramethylammonium montmorillonite and trimethylammonium vermiculite in the energy range 20–140 meV. For both systems...
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Article
Raman Spectra of Ion Intercalated Vermiculites
The Raman spectra of ion intercalated Vermiculites have been studied. The torsional mode frequencies exhibit a shift to higher energy with increasing basal spacing d. Using a van der Waals type force model, an...
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Article
Structural and Dynamical Properties of Intercalated Layered Silicates
Structural and dynamical properties of intercalated solids in general [1], and layered silicates of the type AxB1−x -Vermiculite in particular, are of both fundamental and practical interest. In these systems, tw...