Infrared transitions between hydrogenic states in cylindrical GaAs quantum-well wires under applied magnetic fields

Villamil, Pablo; Porras‐Montenegro, N.; Granada, J. C.

doi:10.1103/physrevb.59.1605

Cited by 48 publications

(22 citation statements)

References 9 publications

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“…1A) agree very well with those obtained by Duque et al [15]. Notice that, in the absence of the magnetic field and for small values of the radius (R < 3a * ), the 2 p − -like state of an on-center donor in a cylindrical GaAs LDS is unbounded, as has already been pointed out by Villamil et al [9]. The appearance of the 2 p − -like bounded state is allowed at high magnetic fields for a wider range of axial lengths, as is shown in Fig.…”

Section: Impurity Located At the Centersupporting

confidence: 83%

“…Numerical calculations and magnetophotoluminescence studies of ln 0.13 Ga 0.8 As/GaAs modulated-barrier quantum wires have been performed in magnetic fields up to B = 9 T by Bayer et al [8]. Recently, the effects of an applied magnetic field on the binding energy of donor impurities in cylindrical GaAs QWWs have been studied [9,10]. It was shown that some excited states are not bounded for some values of the wire radius and of the magnetic field [9].…”

Section: Introductionmentioning

confidence: 98%

“…Recently, the effects of an applied magnetic field on the binding energy of donor impurities in cylindrical GaAs QWWs have been studied [9,10]. It was shown that some excited states are not bounded for some values of the wire radius and of the magnetic field [9]. Also, as a result of the presence of the magnetic field, the impurity binding energy may be increased or decreased depending on the impurity location in the quantum structure [10].…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Niculescu

2001

Superlattices and Microstructures

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Section: Impurity Located At the Centersupporting

confidence: 83%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Niculescu

2001

Superlattices and Microstructures

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“…We further follow the same approach used by Bella and Navaneethakrishnan [22], Chaudhuri and Bajaj [47], Latge et al [48] and Villamil et al [49,50] and take the part of the variational trial wave function that represents the electron in the QD to be in the ground state (Eq. (5)) for any hydrogenic impurity state.…”

Section: O-center Impuritymentioning

confidence: 99%

Spin-Orbit Interaction in a Spherical Quantum Dot

2014

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The conventional spinorbit interaction due to the presence of an o-center impurity located in a spherical quantum dot of nite conning potential has been investigated. The dierent eective masses of dot and barrier are taken into consideration. The spinorbit interaction has been calculated in the excited state (2p). The variational method has been applied by using a new form of the trial wave function in addition to the conventional form that has been used in previous work. The new form has the advantage of satisfying the boundary conditions at the interface between dot and barrier in the case of dierent masses. It has been shown that the spinorbit interaction takes its highest value when the impurity is located in the vicinity of the position at which the radial electron probability takes its maximum value. The corresponding results of a central impurity has been investigated as the limiting case when the impurity radial coordinate tends to zero. The case of central impurity has been further explored by using the exact solution in the state (2p) of the radial Schrödinger equation in the presence of the impurity.

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“…Extensive theoretical and experimental work have been devoted to the study of the optical and electronic properties presented by these nanostructures because of their possible application in optoelectronic device [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Binding Energy of a Bound Polaron in a Quantum Well Wire

et al. 2000

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Theoretical study of the binding energies of an off-center donor hydrogenic impurity in a cylindrical quantum well wires semiconductor is presented. Calculations are performed in the framework of the effective mass approximation using the variational approach. We describe the effect of the quantum confinement by an infinitely deep potential well and we take into consideration the interaction between the charge carrier (electron and ion) and the optical phonons (confined longitudinal optical and surface optical). Our results show that the impurity binding energy depends strongly on the spatial confinement, the impurity position and the polaronic corrections.

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Infrared transitions between hydrogenic states in cylindrical GaAs quantum-well wires under applied magnetic fields

Cited by 48 publications

References 9 publications

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Spin-Orbit Interaction in a Spherical Quantum Dot

Binding Energy of a Bound Polaron in a Quantum Well Wire

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