Elimination of the electron-phonon interaction in superlattices in a quantizing magnetic field

1998 ◽  
Vol 32 (6) ◽  
pp. 657-658
Author(s):  
O. V. Kibis
Keyword(s):  
Magnetic Field ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Quantizing Magnetic Field

Noise Equivalent Power of Graphene–Superconductor-Based Optical Sensor

2017 ◽  
Vol 16 (01) ◽  
pp. 1750006
Author(s):  
B. Afkhami Aghda ◽  
A. Moftakharzadeh ◽  
M. Hosseini
Keyword(s):  
Magnetic Field ◽  
Optical Sensors ◽  
Operation Mode ◽  
Noise Equivalent Power ◽  
Direct Relation ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Device Resistance ◽  
Conductivity Electron ◽  
The Magnetic Field

In this paper, the noise equivalent power (NEP) of optical sensors based on graphene–superconductor junctions in the voltage bias operation mode has been calculated. The effects of device parameters such as temperature, magnetic field and device resistance on the NEP of these detectors have been thoroughly investigated. By solving the related equations, graphene specific heat, thermal conductivity, electron–phonon interaction and responsivity of the detector have been obtained. Using the calculated parameters, the NEP of the device was obtained. The results show that at constant magnetic field the NEP will increase linearly by increasing device temperature. On the other hand, at constant temperature the behavior of NEP versus magnetic field is first increasing and then decreasing. Our calculations show that the optimal resistance of the device has a direct relation with respect to the device temperature, while in the investigated operating range the optimal resistance of device is almost independent of the magnetic field.

OPTICAL PROPERTIES OF ACCEPTORS IN SEMIMAGNETIC QUANTUM WELL SYSTEMS

2002 ◽  
Vol 16 (25) ◽  
pp. 3737-3757 ◽  
Author(s):  
Sr. GERARDIN JAYAM ◽  
K. NAVANEETHAKRISHNAN
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Quantum Well ◽  
Cross Sections ◽  
Empirical Relationship ◽  
Phonon Interaction ◽  
Shallow Acceptor ◽  
Electron Phonon Interaction ◽  
The Magnetic Field ◽  
Confined Phonons

The binding energy of a shallow acceptor in an isolated quantum well of the CdTe / Cd 1-x Mn x Te system has been investigated in an external magnetic field, assuming an empirical relationship between the barrier height and the magnetic field. Photoionization cross-sections for different magnetic fields have been estimated. Taking into account the confined phonons in the electron-phonon interaction, carrier capture times for various magnetic fields and different hydrostatic pressures have been computed. The results obtained are discussed in the light of the existing literature.

THE LINEARIZED POLARON MODEL SYSTEM IN A MAGNETIC FIELD

2008 ◽  
Vol 22 (28) ◽  
pp. 5015-5026
Author(s):  
A. A. GHAZARYAN
Keyword(s):  
Magnetic Field ◽  
Free Energy ◽  
Integral Method ◽  
Function Method ◽  
Model System ◽  
Phonon Interaction ◽  
Polaron Model ◽  
Electron Phonon Interaction ◽  
Path Integral Method ◽  
The Given

This article is devoted to the calculation of the free energy on electron-phonon interaction in the external magnetic field according to Green's function method. It should be noted that creation of structures with predicted features occurred (with the use of experimental techniques). To sum up, it should be noted that the given result coincides with the result of Devreese and Brosens, which was obtained by Feynman's path integral method.

Sign in / Sign up

Export Citation Format

Share Document