Hybrid resonances in the optical absorption of a three-dimensional anisotropic quantum well

Geyler, V. A.; Margulis, V. A.; Shorokhov, A. V.

doi:10.1103/physrevb.63.245316

Cited by 19 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our proceeding papers [27,29] we have found the transition matrix from the initial phase coordinates ( p, r) to the new ones ( P , Q). Using this matrix we can easily calculate the matrix elements of the coordinate and momentum operator because the wave function have a simple form of the product of the oscillatory functions Ψ nml = Φ n (Q 1 )Φ m (Q 2 )Φ l (Q 3 ) in the new phase variables ( P , Q).…”

Section: Introductionmentioning

confidence: 99%

“…However, the method of canonic transformation of the phase space [27] allows us to resolve this problem using only simple calculations from linear algebra. In particular, in our preceding papers we used this method to study hybrid and hybrid-phonon resonances in this system [28,29]. By means of a linear canonic transformation of the phase space, we found the new phase coordinates ( P , Q) such that Hamiltonian (2) has the canonic form [27,29]…”

Section: Introductionmentioning

confidence: 99%

“…In particular, in our preceding papers we used this method to study hybrid and hybrid-phonon resonances in this system [28,29]. By means of a linear canonic transformation of the phase space, we found the new phase coordinates ( P , Q) such that Hamiltonian (2) has the canonic form [27,29]…”

Section: Introductionmentioning

confidence: 99%

“…where ω i (i = 1, 2, 3) are the hybrid frequencies depended on the magnitude and direction magnetic field [27,29].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hybrid–impurity resonances in anisotropic quantum dots

Margulis

Shorokhov

2009

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

The absorption of electromagnetic radiation of an anisotropic quantum dot is theoretically investigated taking into account the processes associated with simultaneous scattering from ionized impurities. It is shown that the scattering of electrons by impurities leads to the resonance absorption even if we have only one impurity in the quantum dot. Explicit formula is derived for the absorption coefficient. The positions of the resonances peaks are found. The effects of external magnetic field on the resonance absorption are studied.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…where ω i (i = 1, 2, 3) are the hybrid frequencies depended on the magnitude and direction magnetic field [27,29].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hybrid–impurity resonances in anisotropic quantum dots

Margulis

Shorokhov

2009

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

show abstract

“…In this case, using the transition matrix ⌳, one can obtain the squares of the matrix elements of the operator V on the analogy of Ref. 15:…”

mentioning

confidence: 99%

Photoconductance of quantum wires in a magnetic field

2004

Self Cite

View full text Add to dashboard Cite

We have calculated the photoconductance of a parabolic quantum wire subject to a magnetic field. It is shown that the photoconductance has maxima in the vicinity of a threshold of ballistic conductance steps. Electromagnetic irradiation is found to decrease the resistance of the quantum wire. The dependence of the photoconductance on the radiation frequency, on the magnetic field, and on the electron energy is investigated.Quantum wires are widely used to study the conductance quantization in three-dimensional systems. As a rule the transport properties of such systems are studied ignoring the influence of a high-frequency electromagnetic field on the conductance. However, the use of microwave irradiation with an applied magnetic field may provide a convenient tool to study quantum electron states in nanostructures. Therefore, the influence of electromagnetic irradiation on the conductance is attracting a great deal of experimental 1-5 and theoretical 6-9 interest.Note that the electric current is more favorable to measure than the absorption coefficient to study the electron states because a direct measurement of the absorption is restricted by the fact that the volume of the wire is much smaller than the total volume of the electromagnetic resonator. 8 The absorption of the electromagnetic field, polarized in the transverse direction ͑in this case there is no transfer of longitudinal momentum͒, can give a strong influence on the conductance due to electron transitions between different modes in the system. 9 Only electrons above the Fermi surface make a positive contribution to the photocurrent. In this case the states below the Fermi surface are occupied by the electrons from the reservoir. Hence the ordinary ballistic conductance, which is conditioned by the electrons below Fermi surface, does not change. Since only photoelectrons make a contribution to the photocurrent it is necessary to count the number of electrons above the Fermi surface to calculate the photoconductance. Thus one of the criteria of nonzero photocurrent is as follows: average time of electron transitions from the reservoir to the wire must be less than average time of electron transitions from the one reservoir to the other. Additionally, the condition for the conductance to be ballistic is as follows: the average transition time from the one reservoir to the other must be less than the average time of the phase-breaking process. 10 Thus in our case the total conductance of the system is a sum of the ordinary conductance and photoconductance. The latter is due to the photoelectron above Fermi surface ͑i.e., due to the electrons in excited levels͒.The purpose of this work is to investigate the influence of a high-frequency electromagnetic field on the conductance quantization in the three-dimensional anisotropic quantum wire. To model the confinement of the quantum wire we use the parabolic potential. This potential is widely employed in theoretical investigations to study the physical properties of quantum wires. 11,12 Note also that in m...

show abstract

Magnetic field and hydrostatic pressure effects on electron Raman scattering in anisotropic quantum dots

Xie

2013

Chemical Physics

View full text Add to dashboard Cite

Hybrid resonances in the optical absorption of a three-dimensional anisotropic quantum well

Cited by 19 publications

References 13 publications

Hybrid–impurity resonances in anisotropic quantum dots

Hybrid–impurity resonances in anisotropic quantum dots

Photoconductance of quantum wires in a magnetic field

Magnetic field and hydrostatic pressure effects on electron Raman scattering in anisotropic quantum dots

Contact Info

Product

Resources

About