"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

The effect of hydrostatic pressure on the diamagnetic susceptibility of a magneto-donor in a GaAs cylindrical quantum dot

S. JANATI EDRISSI1, I. ZORKANI1,* , K. RAHMANI2, A. MMADI3, Y. CHRAFIH4, A. JORIO1, L. LEONTIE5,*

Affiliation

  1. Solid Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar El Mahraz, BP 1796, Fès, Morocco
  2. LIRST Faculty of Polydisciplinary, Beni Mellal, Morocco
  3. Faculty of Sciences and Technics, University of the Comoros, BP 2585, Moroni Comoros, Union of Comoros
  4. LDD, Faculty of Sciences and Technics, Beni Mellal, Morocco
  5. Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Bulevardul Carol I, Nr. 11, RO-700506 Iasi, Romania

Abstract

The binding energy and diamagnetic susceptibility of shallow hydrogenic impurity in a Cylindrical Quantum Dot (CQD) is calculated using a variational approach within the effective mass approximation. Numerical calculations were performed for a GaAs-based CQD as a function of dot size, under simultaneous influence of hydrostatic pressure and magnetic field. The impurity binding energy increases with decreasing dot size and increasing pressure. The diamagnetic susceptibility increases with hydrostatic pressure and decreasing dot size. The absolute value of diamagnetic susceptibility increases with QD radius or reducing magnetic field strength. Applied magnetic field and hydrostatic pressure strongly affect the diamagnetic susceptibility.

Keywords

Cylindrical quantum dot, Diamagnetic susceptibility, Binding energy, Magnetic field, Hydrostatic pressure, Donor.

Citation

S. JANATI EDRISSI, I. ZORKANI, K. RAHMANI, A. MMADI, Y. CHRAFIH, A. JORIO, L. LEONTIE, The effect of hydrostatic pressure on the diamagnetic susceptibility of a magneto-donor in a GaAs cylindrical quantum dot, Optoelectronics and Advanced Materials - Rapid Communications, 13, 1-2, January-February 2019, pp.111-115 (2019).

Submitted at: July 17, 2018

Accepted at: Feb. 12, 2019