Ultrafast spin dynamics in metallic layers and strongly correlated oxides

2014 ◽  
Author(s):  
Ettore Carpene ◽  
Fabio Boschini ◽  
Hamoon Hedayat ◽  
Claudia Dallera ◽  
Ezio Puppin
Keyword(s):  
Spin Dynamics ◽  
Strongly Correlated ◽  
Strongly Correlated Oxides

SPIN DYNAMICS IN STRONGLY CORRELATED ELECTRON SYSTEMS

2007 ◽  
Vol 21 (05) ◽  
pp. 669-690 ◽  
Author(s):  
A. SHERMAN ◽  
M. SCHREIBER
Keyword(s):  
Spin Dynamics ◽  
Magnetic Response ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Two Dimensional ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Transfer Frequency ◽  
Correlated Electron

Magnetic properties of the two-dimensional t-J model are reviewed. Some of these properties are close to those observed in cuprate perovskites. In particular, the magnetic response of the model is characterized by the intensive peak at the antiferromagnetic wave vector and at some transfer frequency. The peak splits into several incommensurate maxima for lower and higher frequencies. We discuss mechanisms which are responsible for these peculiarities in the model, which might also refer to cuprates.

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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