Excited State Effects in the Dielectric Function of a 2D Boson System

Vázquez-Nava, R. A.; Ulloa, Sergio E.; Castillo-Mussot, Marcelo del

doi:10.1002/1521-3951(200010)221:2<797::aid-pssb797>3.0.co;2-o

Cited by 1 publication

(4 citation statements)

References 19 publications

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“…[ 19,20]. Moreover, these potential expressions can also be used in a quantitative description of the kinematics of scattering events, as those needed in a treatment of the distribution function via the Boltzmann equation to evaluate drag, 21 or the evaluation of the Bose condensate properties in this dipole-interacting system.…”

Section: Scattering Eventssupporting

confidence: 63%

“…Since the density-fluctuation modes are now able to include rather complex internal excitations, the resulting modes may indeed be quite unusual and complicated. One would use the potential derived here in an approach similar to the case with no field, 19,20 and results will be presented elsewhere.…”

Section: Discussionmentioning

confidence: 99%

“…As we have mentioned, the potential matrix elements above allow the description of the collective excitations of the weakly repulsive gas of polarized excitons, in a manner similar to that treated in Ref. [ 19,20]. Moreover, these potential expressions can also be used in a quantitative description of the kinematics of scattering events, as those needed in a treatment of the distribution function via the Boltzmann equation to evaluate drag, 21 or the evaluation of the Bose condensate properties in this dipole-interacting system.…”

Section: Scattering Eventsmentioning

confidence: 93%

“…In the last equation, we have used u = r P − r P ′ , and the gradient in Eq. (19) refers to the explicit q-dependence shown in (20), different from u.…”

Section: Interaction Matrix Elementsmentioning

confidence: 99%

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Interaction potential between dynamic dipoles: Polarized excitons in strong magnetic fields

Olivares-Robles

Ulloa

2001

Phys. Rev. B

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The interaction potential of a two-dimensional system of excitons with spatially separated electron-hole layers is considered in the strong magnetic field limit. The excitons are assumed to have free dynamics in the x-y plane, while being constrained or 'polarized' in the z direction. The model simulates semiconductor double layer systems under strong magnetic field normal to the layers. The residual interaction between excitons exhibits interesting features, arising from the coupling of the center-of-mass and internal degrees of freedom of the exciton in the magnetic field. This coupling induces a dynamical dipole moment proportional to the center-of-mass magnetic moment of the exciton. We show the explicit dependence of the inter-exciton potential matrix elements, and discuss the underlying physics. The unusual features of the interaction potential would be reflected in the collective response and non-equilibrium properties of such system.

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Section: Scattering Eventssupporting

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Scattering Eventsmentioning

confidence: 93%

“…In the last equation, we have used u = r P − r P ′ , and the gradient in Eq. (19) refers to the explicit q-dependence shown in (20), different from u.…”

Section: Interaction Matrix Elementsmentioning

confidence: 99%

See 2 more Smart Citations