scholarly journals Pressure effect on the adiabatic potential in the crystals with D23d space symmetry and strong electron-phonon interaction

2019 ◽  
Vol 46 (0) ◽  
pp. 22-29
Author(s):  
Л. Ю. Хархаліс ◽  
К. Є. Глухов ◽  
Т. Я. Бабука
Keyword(s):  
Pressure Effect ◽  
Adiabatic Potential ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Space Symmetry

THERMAL EXPANSION COEFFICIENTS OF YBa2Cu3O7−x WITH ORTHORHOMBIC AND TETRAGONAL PHASES

1989 ◽  
Vol 03 (04) ◽  
pp. 325-329 ◽  
Author(s):  
Y.Z. RUAN ◽  
L.P. LI ◽  
X.L. HU ◽  
D.K. PENG ◽  
J.B. HU ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Pressure Effect ◽  
Structural Phase ◽  
Orthorhombic Phase ◽  
Lattice Instability ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

Thermal expansion coefficients of YBa 2 Cu 3 O 7−x with the tetragonal and orthorhombic structural phases were measured by the method of differential parallel-plate capacitance. There exist anomalies near 205 K for orthorhombic phase and between 92–130K for tetragonal phase, respectively. We suggest that the former may be related to the lattice instability, indicating that there is a strong electron-phonon interaction; the latter may be result from the structural phase transition which damages the high T c superconductivity. In the meantime, a small jump of the thermal expansion coefficient at T c was observed in the orthorhombic phase and from this the pressure effect was estimated.

Optical Spectroscopic Studies of a Soluble Fluorene-Based Conjugated Polymer: A Hydrostatic Pressure and Temperature Study

2001 ◽  
Vol 708 ◽  
Author(s):  
S. Guha ◽  
J.D. Rice ◽  
C. M. Martin ◽  
W. Graupner ◽  
M. Chandrasekhar ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Conjugated Polymer ◽  
Spectroscopic Properties ◽  
Spectroscopic Studies ◽  
Phonon Interaction ◽  
Optical Studies ◽  
Strong Electron ◽  
Conjugated Molecules ◽  
Electron Phonon Interaction ◽  
Backbone Conformation

ABSTRACTSpectroscopic properties of conjugated molecules/polymers have varying degrees of sensitivity to backbone conformation. Optical studies are presented as a function of temperature and hydrostatic pressure, using photoluminescence and Raman scattering from two polymers with distinct differences in their backbone conformation, namely, polyfluorene (PF) and ladder type poly(para-phenylene)(m-LPPP). In contrast to the photoluminescence (PL) vibronics in mLPPP, the 0-0 PL vibronic peak in PF shows a red-shift with increasing temperatures. Pressure studies reveal that the PL spectrum of PF red-shifts and broadens with increasing pressures. The phonon lines in PF show an antiresonance effect at higher pressures indicating a strong electron-phonon interaction.

Evidence of strong electron-phonon interaction in a GaN-based quantum cascade emitter

2020 ◽  
Vol 145 ◽  
pp. 106631
Author(s):  
Daniel Hofstetter ◽  
Hans Beck ◽  
John E. Epler ◽  
Lutz Kirste ◽  
David P. Bour
Keyword(s):  
Phonon Interaction ◽  
Strong Electron ◽  
Quantum Cascade ◽  
Electron Phonon Interaction

Strong Electron-Phonon Interaction in A Suspended Carbon Nanotube

2016 ◽  
Vol 35d (1and2) ◽  
pp. 5 ◽  
Author(s):  
Anand Kumar Singh ◽  
Anil Kumar Das ◽  
Ashok Kumar ◽  
Mantosh Kumar Singh
Keyword(s):  
Carbon Nanotube ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction

Microwave conductivity of superconductors with a strong electron-phonon interaction

1994 ◽  
Vol 89 (10) ◽  
pp. 827-831 ◽  
Author(s):  
O.V. Dolgov ◽  
E.G. Maksimov ◽  
A.E. Karakozov ◽  
A.A. Mikhailovsky
Keyword(s):  
Phonon Interaction ◽  
Microwave Conductivity ◽  
Strong Electron ◽  
Electron Phonon Interaction
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