Optical properties ofLa1.85Sr0.15CuO4: Evidence for strong electron-phonon and electron-electron interactions

1987 ◽  
Vol 36 (1) ◽  
pp. 733-735 ◽  
Author(s):  
S. L. Herr ◽  
K. Kamarás ◽  
C. D. Porter ◽  
M. G. Doss ◽  
D. B. Tanner ◽  
...  
Keyword(s):  
Optical Properties ◽  
Strong Electron ◽  
Electron Interactions

Second-order nonlinear optical properties of eight-membered centrosymmetric cyclic borasiloxanes

2019 ◽  
Vol 43 (27) ◽  
pp. 10948-10958
Author(s):  
Mohan Gopalakrishnan ◽  
Thamodharan Viswanathan ◽  
Ezhumalai David ◽  
Krishnan Thirumoorthy ◽  
Nattamai S. P. Bhuvanesh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Silicon Atom ◽  
Nonlinear Optical ◽  
Crystal Packing ◽  
Second Order ◽  
Nonlinear Optical Properties ◽  
Strong Electron ◽  
Non Covalent Interactions ◽  
Electron Withdrawing Group ◽  
Covalent Interactions

SHG efficiencies of eight-membered centrosymmetric cyclic borasiloxanes arise form distorted silicon atom, strong electron withdrawing group and non-covalent interactions in crystal packing.

scholarly journals Dynamic response of a mesoscopic capacitor in the presence of strong electron interactions

2010 ◽  
Vol 81 (15) ◽  
Author(s):  
Yuji Hamamoto ◽  
Thibaut Jonckheere ◽  
Takeo Kato ◽  
Thierry Martin
Keyword(s):  
Dynamic Response ◽  
Strong Electron ◽  
Electron Interactions

scholarly journals Low Energy Electrodynamics of CrI3 Layered Ferromagnet

2021 ◽  
Author(s):  
Luca Tomarchio ◽  
Salvatore Macis ◽  
Lorenzo Mosesso ◽  
Loi T. Nguyen ◽  
Antonio Grilli ◽  
...  
Keyword(s):  
Optical Properties ◽  
Degrees Of Freedom ◽  
Near Infrared ◽  
Effective Interaction ◽  
Blue Shift ◽  
Ferromagnetic Phase ◽  
Phonon Modes ◽  
Strong Electron ◽  
Spin Lattice ◽  
Electron Phonon Interaction

Abstract We report on the optical properties from terahertz (THz) to Near-Infrared (NIR) of the layered magnetic compound CrI3 at various temperatures, both in the para- magnetic and ferromagnetic phase. In the NIR spectral range, we have observed an insulating electronic gap around 1.1 eV which strongly hardens with decreasing temperature. The blue shift observed represents a record in insulating materials and it is a fingerprint of a strong electron-phonon interaction. Moreover, a further gap hardening is observed below the Curie temperature, indicating the establishment of an effective interaction between electrons and magnetic degrees of freedom in the ferromagnetic phase. This interaction is confirmed by the disappearance of some phonon modes in the same phase as expected from a spin-lattice interaction theory. Therefore, the optical properties of CrI3 reveal a complex interaction among electronic, phononic and magnetic degrees of freedom, opening many possibilities for its use in 2-Dimensional heterostructures.

scholarly journals Electron-electron interactions, topological phase, and optical properties of a charged artificial benzene ring

2015 ◽  
Vol 92 (24) ◽  
Author(s):  
Isil Ozfidan ◽  
Milos Vladisavljevic ◽  
Marek Korkusinski ◽  
Pawel Hawrylak
Keyword(s):  
Optical Properties ◽  
Benzene Ring ◽  
Topological Phase ◽  
Electron Interactions

scholarly journals Formation of Hubbard-like bands as a fingerprint of strong electron-electron interactions in FeSe

2017 ◽  
Vol 95 (8) ◽  
Author(s):  
Matthew D. Watson ◽  
Steffen Backes ◽  
Amir A. Haghighirad ◽  
Moritz Hoesch ◽  
Timur K. Kim ◽  
...  
Keyword(s):  
Strong Electron ◽  
Electron Interactions

scholarly journals Low energy electrodynamics of CrI3 layered ferromagnet

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luca Tomarchio ◽  
Salvatore Macis ◽  
Lorenzo Mosesso ◽  
Loi T. Nguyen ◽  
Antonio Grilli ◽  
...  
Keyword(s):  
Optical Properties ◽  
Degrees Of Freedom ◽  
Near Infrared ◽  
Effective Interaction ◽  
Blue Shift ◽  
Ferromagnetic Phase ◽  
Phonon Modes ◽  
Strong Electron ◽  
Spin Lattice ◽  
Electron Phonon Interaction

AbstractWe report on the optical properties from terahertz (THz) to Near-Infrared (NIR) of the layered magnetic compound CrI3 at various temperatures, both in the paramagnetic and ferromagnetic phase. In the NIR spectral range, we observe an insulating electronic gap around 1.1 eV which strongly hardens with decreasing temperature. The blue shift observed represents a record in insulating materials and it is a fingerprint of a strong electron-phonon interaction. Moreover, a further gap hardening is observed below the Curie temperature, indicating the establishment of an effective interaction between electrons and magnetic degrees of freedom in the ferromagnetic phase. Similar interactions are confirmed by the disappearance of some phonon modes in the same phase, as expected from a spin-lattice interaction theory. Therefore, the optical properties of CrI3 reveal a complex interaction among electronic, phononic and magnetic degrees of freedom, opening many possibilities for its use in 2-Dimensional heterostructures.

scholarly journals Theoretical Calculations for Highly Selective Direct Heteroarylation Polymerization: New Nitrile-Substituted Dithienyl-Diketopyrrolopyrrole-Based Polymers

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2324 ◽  
Author(s):  
Thomas Bura ◽  
Serge Beaupré ◽  
Marc-André Légaré ◽  
Olzhas Ibraikulov ◽  
Nicolas Leclerc ◽  
...  
Keyword(s):  
Activation Energy ◽  
Optical Properties ◽  
Conjugated Polymers ◽  
Organic Electronics ◽  
Theoretical Calculations ◽  
Bromine Atom ◽  
Strong Electron ◽  
Valuable Alternative

Direct Heteroarylation Polymerization (DHAP) is becoming a valuable alternative to classical polymerization methods being used to synthesize π-conjugated polymers for organic electronics applications. In previous work, we showed that theoretical calculations on activation energy (Ea) of the C–H bonds were helpful to rationalize and predict the selectivity of the DHAP. For readers’ convenience, we have gathered in this work all our previous theoretical calculations on Ea and performed new ones. Those theoretical calculations cover now most of the widely utilized electron-rich and electron-poor moieties studied in organic electronics like dithienyl-diketopyrrolopyrrole (DT-DPP) derivatives. Theoretical calculations reported herein show strong modulation of the Ea of C–H bond on DT-DPP when a bromine atom or strong electron withdrawing groups (such as fluorine or nitrile) are added to the thienyl moiety. Based on those theoretical calculations, new cyanated dithienyl-diketopyrrolopyrrole (CNDT-DPP) monomers and copolymers were prepared by DHAP and their electro-optical properties were compared with their non-fluorinated and fluorinated analogues.

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