China
Africa
Explore chapters and articles related to this topic
Electrical Field in Materials
Published in Ahmad Shahid Khan, Saurabh Kumar Mukerji, Electromagnetic Fields, 2020
Ahmad Shahid Khan, Saurabh Kumar Mukerji
The electric susceptibility of a dielectric material is a measure of its sensitivity to the polarization in the presence of an electric field E. It is denoted by a Greek letter χe (chi) and can be considered as the constant of proportionality in the relation of electric field E and the induced dielectric polarization density P. These are related as: P=εo⋅χe⋅E
P
Published in Splinter Robert, Illustrated Encyclopedia of Applied and Engineering Physics, 2017
[biomedical, energy, general, thermodynamics] The electric field response of a medium under the influence of an applied external electric field. Measure of electric resistance of a medium under the process of forming an electric field within the medium. Note that the electric field is the electric potential per unit length resulting from separation of charges; how easily are the charges in a medium polarized under the influence of an external electric field. In a related definition, the electric susceptibility is an indication of the degree of polarization for a medium under the influence of an external electric field, the ease at which charges can be reorganized. The permittivity is the product of the relative permittivity (εr) and the permittivity of free space (ε0 = 8.85419 × 10−12C2/Nm2).
Tridimensional electric field effect on diamagnetic susceptibility and polarisability of a donor impurity in a double quantum dot
Published in Philosophical Magazine, 2023
Reda Arraoui, Ed-Dahmouny Ayoub, Ahmed Sali, Kamal El-Bakkari, Mohammed Jaouane, Abdelghani Fakkahi
By definition, the susceptibility of a sample is an extensive quantity that characterises its reaction to an applied field. The degree of polarisation of a material in regards toward to an applied electric field is measured as electric susceptibility. When we have a response to a magnetic field in the opposite sense of the applied field, we call it diamagnetic. In this respect, the diamagnetic susceptibility is used to investigate the magnetic behaviour of nanostructures. More recently, E. Iqraoun et al. [23] have studied the influence of an electric field applied on the binding energy, the diamagnetic susceptibility and polarisability of a shallow donor in a quantum dot with conical form. One of their results indicated that the field F enhances slightly the , whereas it diminishes when the electronic quantum confinement is strong. To the best of our knowledge, no theoretical research has been conducted on the influence of a tridimensional field F on the diamagnetic susceptibility and the polarisability of a shallow donor impurity in a symmetrical double QD.