2006
DOI: 10.1103/physrevlett.97.187403
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Motional Enhancement of Exciton Magnetic Moments in Zinc-Blende Semiconductors

Abstract: We report a remarkable enhancement of the magnetic moments of excitons as a result of their motion. This surprising result, which we have observed in magneto-optical studies of three distinct zinc-blende semiconductors, GaAs, CdTe, and ZnSe, becomes significant as the kinetic energy of the exciton becomes comparable with its Rydberg energy and is attributed to motionally induced changes in the internal structure of the exciton. The enhancement of the magnetic moment as a function of the exciton translational w… Show more

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Cited by 43 publications
(59 citation statements)
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“…Large variation of exciton g-factor for different quantum-confined exciton states has been experimentally observed in several heterostructures with wide QWs [27][28][29][30]. Effect of the quantum confinement of excitons in the QWs gives rise to quasiperiodic peculiarities in optical spectra corresponding to the quantization of the centerof-mass exciton motion [31,32].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Large variation of exciton g-factor for different quantum-confined exciton states has been experimentally observed in several heterostructures with wide QWs [27][28][29][30]. Effect of the quantum confinement of excitons in the QWs gives rise to quasiperiodic peculiarities in optical spectra corresponding to the quantization of the centerof-mass exciton motion [31,32].…”
Section: Introductionmentioning
confidence: 99%
“…We however found that the second term in these expressions gives rise to the considerably smaller contribution than the first term that is the major effect of coupling with d-like states comes from the first terms. It is nonzero for k ϕ , k ϕ = (−2, 0) for matrix element (26) and k ϕ k ϕ = (2, 0) for (27).…”
Section: B Step 2: the Total Hamiltonian Diagonalization In Finite Bmentioning
confidence: 99%
“…Такой ме-тод позволяет исследовать тонкие оптические эффекты и определять связанные с ними зонные параметры. В част-ности, этим методом был обнаружен эффект гигантского увеличения g-фактора экситона при его движении [1] и определены параметры гамильтониана дырки [2], ответ-ственные за возникновение этого эффекта. В работе [3] из анализа спектров экситонного отражения в магнит-ном поле был выявлен специфичный для квантовых ям эффект магнитоиндуцированной пространственной дисперсии -эффект четности.…”
unclassified
“…Recently some of the present authors have observed a new effect of "motional enhancement of the exciton magnetic moment" (MEM). In this effect, the exciton magnetic moment (exciton g-factor) increases for the moving exciton [6] as the translational kinetic energy gets larger.…”
Section: Introductionmentioning
confidence: 99%