Cluster theory of charge-transfer excitations in strongly correlated oxides

2011 ◽  
Vol 111 (3) ◽  
pp. 403-410 ◽  
Author(s):  
A. S. Moskvin
Keyword(s):  
Charge Transfer ◽  
Strongly Correlated ◽  
Cluster Theory ◽  
Strongly Correlated Oxides

New Polaronic-Type Excitons in Ferroelectric Oxides: INDO-Calculations and Experimental Manifestation

2001 ◽  
Vol 677 ◽  
Author(s):  
Valentin S. Vikhnin ◽  
Roberts I. Eglitis ◽  
Eugene A. Kotomin ◽  
Siegmar Kapphan ◽  
Gunnar Borstel
Keyword(s):  
Charge Transfer ◽  
Theoretical Knowledge ◽  
Strongly Correlated ◽  
Hartree Fock ◽  
Indo Calculations ◽  
Photoluminescence Studies ◽  
Ferroelectric Oxides ◽  
New Phase

ABSTRACTThe current experimental and theoretical knowledge of new polaronic-type excitons in ferroelectric oxides – charge transfer vibronic excitons (CTVE) – is discussed. It is shown that Hartree-Fock-type INDO calculations as well as photoluminescence studies in ferroelectric oxygen-octahedral perovskites confirm the CTVE-concept. Single CTVE as well as a new phase of strongly correlated CTVEs are analysed.

Ultrafast dynamical response of strongly correlated oxides: role of coherent optical and acoustic oscillations

2010 ◽  
Vol 57 (11) ◽  
pp. 959-966 ◽  
Author(s):  
B. Mansart ◽  
D. Boschetto ◽  
A. Sambri ◽  
R. Malaquias ◽  
F. Miletto Granozio ◽  
...  
Keyword(s):  
Dynamical Response ◽  
Strongly Correlated ◽  
Acoustic Oscillations ◽  
Strongly Correlated Oxides

scholarly journals Assessing Hubbard-corrected AM05+U and PBEsol+U density functionals for strongly correlated oxides CeO2 and Ce2O3

2016 ◽  
Vol 18 (38) ◽  
pp. 26816-26826 ◽  
Author(s):  
Philippe F. Weck ◽  
Eunja Kim
Keyword(s):  
Strongly Correlated ◽  
Density Functionals ◽  
Structure Property ◽  
Exchange Correlation ◽  
Structure Property Relationships ◽  
Strongly Correlated Oxides

The structure–property relationships of bulk CeO2 and Ce2O3 have been investigated within the DFT+U framework. AM05+U and PBEsol+U reproduce experimental crystalline parameters and properties with superior accuracy compared to conventional Hubbard-corrected exchange–correlation functionals.

scholarly journals Strongly correlated oxides for energy harvesting

2018 ◽  
Vol 19 (1) ◽  
pp. 899-908 ◽  
Author(s):  
Jobu Matsuno ◽  
Jun Fujioka ◽  
Tetsuji Okuda ◽  
Kazunori Ueno ◽  
Takashi Mizokawa ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Strongly Correlated ◽  
Strongly Correlated Oxides

scholarly journals Shock compression of strongly correlated oxides: A liquid-regime equation of state for cerium(IV) oxide

2018 ◽  
Vol 97 (12) ◽  
Author(s):  
Philippe F. Weck ◽  
Kyle R. Cochrane ◽  
Seth Root ◽  
J. Matthew D. Lane ◽  
Luke Shulenburger ◽  
...  
Keyword(s):  
Equation Of State ◽  
Shock Compression ◽  
Strongly Correlated ◽  
Strongly Correlated Oxides

Features of Optical Properties and the Electronic Structure of Nanostructured Oxides of 3d-Metals

2010 ◽  
Vol 168-169 ◽  
pp. 317-320 ◽  
Author(s):  
Boris A. Gizhevskii ◽  
Yu.P. Sukhorukov ◽  
L.V. Nomerovannaya ◽  
A.A. Makhnev ◽  
Yurii S. Ponosov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Absorption Edge ◽  
High Pressure Torsion ◽  
Fundamental Absorption Edge ◽  
Strongly Correlated ◽  
Phonon Modes ◽  
3D Metals ◽  
Wide Range ◽  
Strongly Correlated Oxides

Features of the optical properties of nanostructured strongly correlated oxides CuO, Y3Fe5O12, and FeBO3 in a wide range of energies, which includes both the fundamental absorption region, low-energy electron excitations, and phonon modes have been investigated by methods of optical spectroscopy. Absorption and reflection spectra, Raman spectra, and ellipsometry measurements are carried out on the samples of oxide nanostructured ceramics. High-density nanoceramics were prepared by shock-wave loading and high pressure torsion methods from coarse-grain oxide powders. Strong smearing of the fundamental absorption edge is revealed for all nanoceramics. Anomalous red shift of the absorption edge Eg is found in CuO nanooxide. The features of the optical functions in nanooxides of 3d-metals may be attributed to high defectiveness of nanooxides, peculiarities in the electronic structure of strongly correlated oxides and their tendency to electronic phase separation.

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