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Osório, Francisco A. P.; Degani, Marcos H.; Hipólito, Oscar

doi:10.1103/physrevb.37.1402

Cited by 80 publications

(20 citation statements)

References 15 publications

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“…Lee et al [2] and Bryant [3] have studied the hydrogenic impurity binding energy in QWWs by using a variational approach with infinite barrier. For the realistic case of a finite height confining potential Bryant [4] and Osoriõ et al [5] have calculated the binding energy, for cylindrical and rectangular quantum wire, respectively. El Said et al [6] have estimated the donor polarizability in rectangular wire, assuming that an electric field is applied in the z-direction, chosen as the direction of the electron free motion.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field and finite barrier-height effects on the polarizability of a shallow donor in a GaAs quantum wire

Zounoubi¹,

Messaoudi²,

Zorkani³

et al. 2001

Superlattices and Microstructures

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Section: Introductionmentioning

confidence: 99%

Magnetic field and finite barrier-height effects on the polarizability of a shallow donor in a GaAs quantum wire

Zounoubi¹,

Messaoudi²,

Zorkani³

et al. 2001

Superlattices and Microstructures

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“…We use the effective Bohr radius h ¼ ea * F R * is a dimensionless measure of the electric field, g ¼ hw c 2R * is a dimensionless measure of the magnetic field and e 0 is the dielectric constant. m * is the electron band effective mass, which is defined as [25] …”

Section: General Formalismmentioning

confidence: 99%

Finite-Barrier Height Effect on the Polarizability of a Shallow Magneto-Donor in a Quantum Box

Messaoudi¹,

Zounoubi²,

Zorkani³

et al. 2002

phys. stat. sol. (b)

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PACS: 73.21.La; 73.21.Hb The polarizability is estimated for a shallow donor confined to move in a quantum box (QB) with a uniform magnetic field. In this work, the Hass variational method within the effective mass approximation is used in the case of an infinite and a finite barrier potential. We present our results as a function of the size of the box and the intensity of the magnetic field. It is found, that the polarizabilities decrease with decreasing size of the box, reach a minimum value at a certain value of the cross section of the box and increase again when the section becomes significantly smaller. For a higher and larger box, the effects of the magnetic field are predominant. The finite barrier-height effect is important for higher fields and large box. The numerical results are presented for a box made out of GaAs.

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“…Recent advances in the technology of fabrication of quasi-2D, -1D, -0D nanocrystals have stimulated the theoreticians' interest in formulating models describing physical phenomena associated with nanocrystals [1][2][3][4][5][6][7][8][9][10][11][12]. These structures are attractive both for scientific investigation and for the development of a new generation of electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Polaron in Cylindrical and Spherical Quantum Dots

Fai¹,

Teboul²,

Monteil³

et al. 2004

Condens. Matter Phys.

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Polaron states in cylindrical and spherical quantum dots with parabolic confinement potentials are investigated applying the Feynman variational principle. It is observed that for both kinds of quantum dots the polaron energy and mass increase with the increase of Fröhlich electron-phonon coupling constant and confinement frequency. In the case of a spherical quantum dot, the polaron energy for the strong coupling is found to be greater than that of a cylindrical quantum dot. The energy and mass are found to be monotonically increasing functions of the coupling constant and the confinement frequency.

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Bound impurity in GaAs-Ga1−κAl

Cited by 80 publications

References 15 publications

Magnetic field and finite barrier-height effects on the polarizability of a shallow donor in a GaAs quantum wire

Magnetic field and finite barrier-height effects on the polarizability of a shallow donor in a GaAs quantum wire

Finite-Barrier Height Effect on the Polarizability of a Shallow Magneto-Donor in a Quantum Box

Polaron in Cylindrical and Spherical Quantum Dots

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