Theoretical optical spectroscopy of complex systems
نویسندگان
چکیده
منابع مشابه
D ec 1 99 8 Local Optical Spectroscopy in Quantum Confined Systems : A Theoretical Description
A theoretical description of local absorption is proposed in order to investigate spectral variations on a length scale comparable with the extension of the relevant quantum states. A general formulation is derived within the density-matrix formalism including Coulomb correlation, and applied to the prototypical case of coupled quantum wires. The results show that excitonic effects may have a c...
متن کاملApplication of Optical Spectroscopy in Biological Systems
Conceptually, a typical spectroscopic experiment is extremely simple. Electromagnetic radiation at a certain nominal wavelength λ is allowed to impinge on the sample. Then some properties of the radiation that emerges from the sample are measured. One of the simplest properties is the fraction of the incident radiation absorbed or dissipated by the sample. (Typical techniques are optical absorp...
متن کاملSpectroscopy, Structural, and Optical Investigations of NiFe2O4 Ferrite
Ni ferrite crystalline material is synthesized using a sol-gel method at two different temperatures. The vibrational and stretching modes, crystalline phase, size distribution and morphology of the products are investigated via Raman back-scattering and Fourier transform infrared (FTIR) spectroscopy, XRD and FESEM, respectively. Vibrational modes of spinel ferrite are observed at Raman and FTIR...
متن کاملThe ! Transition in Ce: A Theoretical View from Optical Spectroscopy
Kristjan Haule, Viktor Oudovenko, Sergej Y. Savrasov, and Gabriel Kotliar Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia Laboratory for Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia Department of Physics, New Jersey Institute of Technology, Newark, NJ 07102, USA Department of Physics and Center for Material Theory, Rutgers University, Piscataway, NJ 08854,...
متن کاملComplex Systems, Artificial Intelligence and Theoretical Psychology
The main finding of complex systems research is that there can be a disconnect between the local behavior of the interacting elements of a complex system and regularities that are observed in the global behavior of that system, making it virtually impossible to derive the global behavior from the local rules. It is arguable that intelligent systems must involve some amount of complexity, and so...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Electron Spectroscopy and Related Phenomena
سال: 2013
ISSN: 0368-2048
DOI: 10.1016/j.elspec.2013.02.002