Magnetic tailoring of the nature of the fundamental optical transition in a ZnSe/(Zn,Mn)Se heterostructure

Deleporte, Emmanuelle; Lebihen, T.; Ohnesorge, B.; Roussignol, Philippe; Delalande, Claude; Guha, Supratik; Munekata, H.

doi:10.1103/physrevb.50.4514

Cited by 29 publications

(15 citation statements)

References 31 publications

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“…Zn 1Ϫx Mn x Se/ZnSe heterostructures have been fabricated by molecular-beam epitaxy and investigated by several groups. [11][12][13][14][15][16] Due to the band-gap bowing of Zn 1Ϫx Mn x Se, 17 this material in combination with ZnSe serves as a quantum well for xϽ0.04 and as barriers for xϾ0.04. However for xϽ0.04 the confinement potentials for carriers are rather small.…”

Section: Introductionmentioning

confidence: 99%

Heating of the magnetic ion system in (Zn, Mn)Se/(Zn, Be)Se semimagnetic quantum wells by means of photoexcitation

et al. 2001

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Heating of the spin system of magnetic Mn ions by means of photoexcited carriers has been studied in undoped ͑Zn, Mn͒Se/͑Zn, Be͒Se multiple quantum well structures. Elevated spin temperature of the magnetic ions has been documented by a suppression of the giant Zeeman splitting of excitonic states measured in photoluminescence and reflectivity spectra. Low densities of photoexcitation ͑about 1 W/cm 2 ͒ induce strong heating of the Mn spin system. The heating shows a strong dependence on the Mn content varying from 0.004 to 0.06. It decreases with increasing Mn content due to the shortening of the spin-lattice relaxation time.

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Section: Introductionmentioning

confidence: 99%

Heating of the magnetic ion system in (Zn, Mn)Se/(Zn, Be)Se semimagnetic quantum wells by means of photoexcitation

et al. 2001

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“…[1][2][3][4][5] The study of such heterostructures has opened a large area of new phenomena such as magneticfield-induced type-I/type-II transition 6 or spin superlattices, 4 because of the large variation of the conduction-and valence-band edges as a function of an applied magnetic field. This large variation results from the exchange interaction between the carriers and the magnetic ions spins.…”

Section: Introductionmentioning

confidence: 99%

Band-offset determination of the CdTe/(Cd,Mn)Te interface

Lebihen¹,

Deleporte²,

Delalande³

1997

Phys. Rev. B

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We report on photoluminescence excitation spectroscopy of CdTe/͑Cd,Mn͒Te separate confinement heterostructures. The Mn concentration and layers thicknesses are carefully chosen, so that transitions that are strongly dependent on the valence-band offset are observable. Comparison between theory and experiments gives a valence-band offset between CdTe and Cd 1Ϫx Mn x Te equal to 25% Ϯ 7% of the total band-gap difference. ͓S0163-1829͑97͒06504-1͔

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“…17 The strain-free band offset between the ZnSe and Zn 1Ϫx Mn x Se layers is 30 meV. 20 The relative valence-band offset found in the literature is not unique 21 and here we take it as 20%. The strain-free lattice constant is a 1 ϭ5.666 Å for ZnSe and a 2 ϭ5.666ϩ0.268x Å ͑Ref.…”

Section: Resultsmentioning

confidence: 99%

Electronic structure of diluted magnetic semiconductor superlattices: In-plane magnetic field effect

Chang

Xia

2002

Phys. Rev. B

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The electronic structure of diluted magnetic semiconductor ͑DMS͒ superlattices under an in-plane magnetic field is studied within the framework of the effective-mass theory; the strain effect is also included in the calculation. The numerical results show that an increase of the in-plane magnetic field renders the DMS superlattice from the direct band-gap system to the indirect band-gap system, and spatially separates the electron and the hole by changing the type-I band alignment to a type-II band alignment. The optical transition probability changes from type I to type II and back to type I like at large magnetic field. This phenomenon arises from the interplay among the superlattice potential profile, the external magnetic field, and the sp-d exchange interaction between the carriers and the magnetic ions. The shear strain induces a strong coupling of the light-and heavy-hole states and a transition of the hole ground states from ''light''-hole to ''heavy''-holelike states.

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Magnetic tailoring of the nature of the fundamental optical transition in a ZnSe/(Zn,Mn)Se heterostructure

Cited by 29 publications

References 31 publications

Heating of the magnetic ion system in (Zn, Mn)Se/(Zn, Be)Se semimagnetic quantum wells by means of photoexcitation

Heating of the magnetic ion system in (Zn, Mn)Se/(Zn, Be)Se semimagnetic quantum wells by means of photoexcitation

Band-offset determination of the CdTe/(Cd,Mn)Te interface

Electronic structure of diluted magnetic semiconductor superlattices: In-plane magnetic field effect

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