scholarly journals Superconductivity-induced transverse plasma mode and phonon anomaly in the c -axis response of the bilayer compound RbCa2Fe4As4F2

2020 ◽  
Vol 101 (21) ◽  
Author(s):  
B. Xu ◽  
D. Munzar ◽  
A. Dubroka ◽  
E. Sheveleva ◽  
F. Lyzwa ◽  
...  
Keyword(s):  
Plasma Mode ◽  
Phonon Anomaly

Deep Impurities with Collision Delay

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Wave Function ◽  
Kinetic Equation ◽  
Elastic Scattering ◽  
Response Function ◽  
Plasma Oscillation ◽  
Impurity Scattering ◽  
Fermi Momentum ◽  
Screening Length ◽  
Plasma Mode ◽  
Dissipative Mechanism

The linearised nonlocal kinetic equation is solved analytically for impurity scattering. The resulting response function provides the conductivity, plasma oscillation and Fermi momentum. It is found that virial corrections nearly compensate the wave-function renormalizations rendering the conductivity and plasma mode unchanged. Due to the appearance of the correlated density, the Luttinger theorem does not hold and the screening length is influenced. Explicit results are given for a typical semiconductor. Elastic scattering of electrons by impurities is the simplest but still very interesting dissipative mechanism in semiconductors. Its simplicity follows from the absence of the impurity dynamics, so that individual collisions are described by the motion of an electron in a fixed potential.

scholarly journals Non-linear Terahertz driving of plasma waves in layered cuprates

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Francesco Gabriele ◽  
Mattia Udina ◽  
Lara Benfatto
Keyword(s):  
Low Frequency ◽  
Plasma Waves ◽  
Meissner Effect ◽  
High Energy ◽  
Plasma Mode ◽  
Light Pulses ◽  
High Frequency Plasma ◽  
Non Linear ◽  
Out Of Plane ◽  
Layered Cuprates

AbstractThe hallmark of superconductivity is the rigidity of the quantum-mechanical phase of electrons, responsible for superfluid behavior and Meissner effect. The strength of the phase stiffness is set by the Josephson coupling, which is strongly anisotropic in layered cuprates. So far, THz light pulses have been used to achieve non-linear control of the out-of-plane Josephson plasma mode, whose frequency lies in the THz range. However, the high-energy in-plane plasma mode has been considered insensitive to THz pumping. Here, we show that THz driving of both low-frequency and high-frequency plasma waves is possible via a general two-plasmon excitation mechanism. The anisotropy of the Josephson couplings leads to markedly different thermal effects for the out-of-plane and in-plane response, linking in both cases the emergence of non-linear photonics across Tc to the superfluid stiffness. Our results show that THz light pulses represent a preferential knob to selectively drive phase excitations in unconventional superconductors.

scholarly journals Axisymmetric plasma mode in disk with two-dimensional electron gas

2020 ◽  
Vol 1686 ◽  
pp. 012052
Author(s):  
D A Rodionov ◽  
I V Zagorodnev ◽  
A A Zabolotnykh ◽  
V A Volkov
Keyword(s):  
Electron Gas ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Plasma Mode ◽  
Dimensional Electron Gas

Phonon anomaly of La1.85Sr0.15CuO4 studied by neutron scattering

1995 ◽  
Vol 213-214 ◽  
pp. 75-77 ◽  
Author(s):  
M. Arai ◽  
K. Yamada ◽  
S. Hosoya ◽  
S. Wakimoto ◽  
K. Ubukata ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Phonon Anomaly

Microwave plasma mode excitation in Ge single-crystals

1969 ◽  
Vol 7 (10) ◽  
pp. 751-753 ◽  
Author(s):  
M. Grandolfo ◽  
P.L. Indovina
Keyword(s):  
Single Crystals ◽  
Microwave Plasma ◽  
Plasma Mode ◽  
Mode Excitation

P-102: A Study on Plasma Mode and Efficiency of Coplanar and Face-to-Face Electrode Structures in AC PDPs

2006 ◽  
Vol 37 (1) ◽  
pp. 582 ◽  
Author(s):  
Bo-Sung Kim ◽  
Heung-Sik Tae ◽  
Tae. S. Cho ◽  
Young. D. Choi ◽  
Jung. N. Kim ◽  
...  
Keyword(s):  
Plasma Mode ◽  
Face To Face
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