scholarly journals Theory of Raman response of a superconductor with extendeds-wave symmetry: Application to the iron pnictides

2009 ◽  
Vol 79 (22) ◽  
Author(s):  
Andrey V. Chubukov ◽  
Ilya Eremin ◽  
Maxim M. Korshunov
Keyword(s):  
Iron Pnictides ◽  
Wave Symmetry ◽  
Raman Response

scholarly journals Manifestation of nematic degrees of freedom in the Raman response function of iron pnictides

2015 ◽  
Vol 92 (7) ◽  
Author(s):  
U. Karahasanovic ◽  
F. Kretzschmar ◽  
T. Böhm ◽  
R. Hackl ◽  
I. Paul ◽  
...  
Keyword(s):  
Response Function ◽  
Degrees Of Freedom ◽  
Iron Pnictides ◽  
Raman Response

scholarly journals The Phenomenology of Iron Pnictides Superconductors Explained in the Framework of -Wave Three-Band Eliashberg Theory

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
G. A. Ummarino
Keyword(s):  
Critical Temperature ◽  
Order Parameter ◽  
Dominant Role ◽  
Coupling Constants ◽  
Iron Pnictides ◽  
Critical Temperatures ◽  
Sign Reversal ◽  
Eliashberg Theory ◽  
Wave Symmetry ◽  
Boson Coupling

Thes-wave three-band Eliashberg theory can simultaneously reproduce the experimental critical temperatures and the gap values of the superconducting materials , and as exponent of the more important families of iron pnictides. In this model the dominant role is played by interband interactions and the order parameter undergoes a sign reversal between hole and electron bands (-wave symmetry). The values of all the gaps (with the exact experimental critical temperature) can be obtained by using high values of the electron-boson coupling constants and small typical boson energies (in agreement with experiments).

Polarization-dependence of the Raman response of free-standing strained Ce0.8Gd0.2O2 membranes

2021 ◽  
Author(s):  
Alexander Konetschny ◽  
Marcel Weinhold ◽  
Christian Heiliger ◽  
Matthias Thomas Elm ◽  
Peter J. Klar
Keyword(s):  
Thin Films ◽  
Strain State ◽  
Polarization Dependence ◽  
Raman Mapping ◽  
Free Standing ◽  
Excitation Light ◽  
Oriented Polycrystalline ◽  
Raman Response

Square-shaped Ce0.8Gd0.2O2 (GDC) membranes are prepared by microstructuring techniques from (111)-oriented, polycrystalline GDC thin films. The strain state of the membranes is investigated by micro-Raman mapping using polarized excitation light....

Grain boundary effects on dielectric, infrared and Raman response of SrTiO3 nanograin ceramics

2006 ◽  
Vol 26 (14) ◽  
pp. 2855-2859 ◽  
Author(s):  
Jan Petzelt ◽  
Tetyana Ostapchuk ◽  
Ivan Gregora ◽  
Maxim Savinov ◽  
Dagmar Chvostova ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Effects ◽  
Grain Boundary Effects ◽  
Raman Response

Mechanochemically assisted synthesis of Ca/K 1144-type iron pnictides

2021 ◽  
pp. 1-1
Author(s):  
Andrea Masi ◽  
Achille Angrisani Armenio ◽  
Andrea Augieri ◽  
Giuseppe Celentano ◽  
Chiarasole Fiamozzi Zignani ◽  
...  
Keyword(s):  
Iron Pnictides

Effects of d-wave symmetry in high Tc step-edge Josephson junctions

2000 ◽  
Vol 341-348 ◽  
pp. 1473-1474 ◽  
Author(s):  
Soon-Gul Lee ◽  
Yunseok Hwang ◽  
Jin-Tae Kim ◽  
Gun Yong Sung
Keyword(s):  
Josephson Junctions ◽  
Step Edge ◽  
High Tc ◽  
Wave Symmetry ◽  
D Wave
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