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Showing 1 to 20 of 173 for “"Electronic states"”.
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Periodically Modulated Electronic States in Natural Superlattices
… a crystal underpins our understanding of their electronic states. Since the development of the band theory description of such systems, it was realized that interaction effects and materials synthesis techniques could be exploited to introduce additional periodic modulations atop this underlying …
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High Pressure Moessbauer Studies of the Electronic States of Iron Compounds
Made available in DSpace on 2014-12-08T23:18:24Z (GMT). No. of bitstreams: 1 6910770.pdf: 4870055 bytes, checksum: f321a08d830dd0705bae0005ad40da93 (MD5) Previous issue date: 1968
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High-resolution spectroscopic investigations of rovibrational state mixing in ground electronic states
… of rovibrational state mixing in the ground electronic state of the molecules methyl glyoxal and methyl formate are presented. The technique of Stimulated Emission Pumping (SEP) spectroscopy is used to examine the effect of an intramolecular van der Waals interaction on intermode coupling of …
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A configuration interaction study of the electronic states of the water molecule
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1962.
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Optical Control and Spectroscopic Studies of Collisional Population Transfer in Molecular Electronic States
… \textit{gateway} between the singlet and triplet electronic states. We demonstrate that the singlet-triplet mixing characters of the \textit{gateway} levels can be controlled by manipulating the coupling laser \textit{E} field amplitude. We observe experimentally the collisional population …
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Experimental and Theoretical Study of Resonance Raman Spectroscopy in Ground and Excited Electronic States
… to understand the effects of intramolecular electronic and nuclear structure on the Raman intensities of molecules with extended π conjugation. Conjugated thiophene derivatives have a variety of interesting optical and electronic properties, which makes them ideal targets for studies of …
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Character of the Electronic States Near the Metal -Insulator Transition in Gallium Manganese Arsenide
The character of electronic states near the Mott-Anderson metal-insulator transition in the ferromagnetic semiconductor Ga1-xMn xAs is studied by cross sectional scanning tunneling microscopy. 200nm thick samples grown by MBE at UCSB with doping levels from 1.5%, close the metal-insulator …
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Character of the electronic states near the metal-insulator transition in Gallium Manganese Arsenide
The character of electronic states near the Mott-Anderson metal-insulator transition in the ferromagnetic semiconductor Ga1-xMnxAs is studied by cross sectional scanning tunneling microscopy. 200nm thick samples grown by MBE at UCSB with doping levels from 1.5%, close the metal-insulator …
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Collisional transfer between excited electronic states as a mechanism for sulfur mass-independent fractionation
The Great Oxygenation Event, the introduction of O2 into the Earth's atmosphere approximately 2.5 billion years ago, is a critical milestone in the development of life on Earth. The exact timing of this event is thought to be correlated with the disappearance of Archean sulfur isotopic anomalies, …
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Field-induced magnetic phase transitions and correlated electronic states in the hexagonal RAgGe and RPtIn series
… having low ordering temperatures and enhanced electronic specific heat coefficient gamma, they can be classified as stoichiometric, Yb-based heavy fermion compounds, with a magnetic field-induced quantum critical point QCP. In the former compound, a non-Fermi liquid-like NFL regime is apparent …
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A Dynamic Study of the Electronic States of Nitrogen-Dioxide Using Tunable Organic Dye Laser Excitation
Made available in DSpace on 2014-12-10T23:01:23Z (GMT). No. of bitstreams: 1 7219921.pdf: 5330611 bytes, checksum: c6a1f589596064b0febebd42fe66b748 (MD5) Previous issue date: 1972
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Electronic States near Surfaces - a) Analysis of calculation methods using semi-infinite boundary conditions; b) Sensitive detection using laser photoelectron spectroscopy
… can provide a low-background, sensitive view of electronic states in the band gap and photo-populated states above the Fermi level. Measurements of photoelectron emission for ultra-high vacuum cleaved surfaces of CdSe, excited by 4.5 and 5.9 eV Ti:sapphire laser pulses of 150 femtosecond duration …
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Variable Temperature Scanning Tunneling Microscopy Study of a High Temperature Superconductor Bi2Sr2CaCu2O8+d
… tunneling microscope (STM) to investigate the electronic states of a slightly underdoped high-TC superconductor Bi2Sr2CaCu2O8+d as a function of temperature. We have demonstrated for the first time that atomicallyresolved spectroscopic studies at elevated temperatures are possible. We have used …
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Atom-by-Atom Substitution of Transition Metals in Gallium Arsenide and Visualization of Hole-Mediated Interactions
… between isolated Mn impurities mediated by electronic states in GaAs. High-resolution STM measurements provide visualization of the GaAs electronic states that participate in Mn-Mn interactions. We quantify the interaction strengths between Mn pairs as a function of relative position and …
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Beschreibung angeregter Molekülzustände in komplex strukturierter Umgebung durch einen effizienten, individuell selektierenden MRCI-Algorithmus gekoppelt an ein molekularmechanisches Kraftfeld
… demand due to the involvement of excited electronic states, we (i) largely speed up the individually selecting multi-refernce configuration interaction (IS/MRCI) scheme by Tavan and Schulten (1980) by a new grahical algorithm and (ii) take use of recently developed semimempirical valence …
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Quantum Nuclear Dynamics: Application to Spin-Forbidden Transitions and Lifetime of Vibrational States
… - nK range) can be prepared in specific quantum states and used for a variety of applications, such as quantum computing and ultracold chemistry. Theoretical predictions of the spectroscopic constants and the lifetimes of the vibrational quantum states of these molecules are needed for selecting …
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Atom-by-Atom Substitution of Transition Metals in GaAs and Visualization of Hole-Mediated Interactions
… metal dopants into GaAs. We compare the electronic states of isolated single acceptors in an identical configuration - Ga sites in the top layer of a GaAs surface. The acceptor levels and anisotropic shape of the hole states for manganese, iron, cobalt; and zinc are determined with STM …
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