2000
DOI: 10.1103/physrevb.61.8388
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Sinusoidally modulatedZnSexTe1xsuperlattices: Fabrication and structural studies

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Cited by 13 publications
(7 citation statements)
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“…Associated sinusoidal variation of film composition in the growth direction has been observed in other alloy systems 24,25 and should be anticipated as a possible microstructural feature in any film grown under conditions that include even small flux gradients and substrate rotation. Substrate rotation generally is introduced into MBE growth strategies specifically to mitigate the flux profiles that are inherent to most MBE chamber designs.…”
Section: B Discussionmentioning
confidence: 66%
“…Associated sinusoidal variation of film composition in the growth direction has been observed in other alloy systems 24,25 and should be anticipated as a possible microstructural feature in any film grown under conditions that include even small flux gradients and substrate rotation. Substrate rotation generally is introduced into MBE growth strategies specifically to mitigate the flux profiles that are inherent to most MBE chamber designs.…”
Section: B Discussionmentioning
confidence: 66%
“…They attributed this increase in bismuth to crystallization of gallium (Ga) and Bi surface clusters that grow and shrink as the sample is rotated through the varying V/III flux ratio. Periodic compositional modulation as a function of substrate rotation has been documented for other MBE-grown materials such as ZnSeTe, 20 InGaAs, 21 and AlGaAs. 22 This work further explores how varying the local V/III and Bi/Ga ratios via control of sample rotation during growth can impact the saturation point of bismuth in GaAsBi grown on GaAs and InGaAs underlayers and grown with As 4 rather than As 2 .…”
Section: Introductionmentioning
confidence: 90%
“…The fact that the period of the sinusoidal modulation is proportional to the period of the rotational motion of the substrate is unambiguously indicated by X-ray measurements, the separation of the superlattice satellites from the main peak indicating that the period grows with the rotation rate. It should be noted that the satellite peak is as narrow as the main alloy peak, indicating that the SMSL structures are of very good quality [1]. The band structure of the SMSL is interesting as well, different from that of standard superlattice with 2 abrupt interfaces [6].…”
mentioning
confidence: 99%
“…Motivated by this interest, recently a new model of fabricating ZnSe/ZnTe superlattices has been introduced, using the rotation of the substrate as the modulating mechanism instead of shutter opening and closing [1], resulting in sinusoidally modulated superlattices (SMSLs) [1]. The compositional profile of this new structure has been investigated using X-ray diffraction studies, which systematically exhibit a main alloy peak arising from the average ZnSe 1−x Te x lattice constant of the alloy, with only one satellite on each side of the main peak, the latter implying that the chemical composition of the alloy x varies sinusoidally along the growth direction [5].…”
mentioning
confidence: 99%
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