Properties of Type-II ZnTe/ZnSe Submonolayer Quantum Dots Studied via Excitonic Aharonov-Bohm Effect and Polarized Optical Spectroscopy
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Properties of Type-II ZnTe/ZnSe Submonolayer Quantum Dots Studied via Excitonic Aharonov-Bohm Effect and Polarized Optical Spectroscopy
منابع مشابه
Photoluminescence and magneto-optical properties of multilayered type-II ZnTe/ZnSe quantum dots
Multilayered Zn–Se–Te structures grown by migration enhanced epitaxy are studied by temperatureand excitation-dependent photoluminescence (PL) as well as magneto-PL. The PL consists of two bands: a blue band, overlaid with band edge sharp lines, dominant at low temperatures and high excitation, and a green band, which appears at elevated temperature and low excitation. Upon varying excitation i...
متن کاملAharonov-Bohm excitons at elevated temperatures in type-II ZnTe/ZnSe quantum dots.
Optical emission from type-II ZnTe/ZnSe quantum dots demonstrates large and persistent oscillations in both the peak energy and intensity indicating the formation of coherently rotating states. Furthermore, these Aharonov-Bohm oscillations are shown to be remarkably robust and persist until 180 K. This is at least one order of magnitude greater than the typical temperatures in lithographically ...
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We present magneto-photoluminescence of a ZnTe/ZnSe multilayer structure in which the clustering of Te atoms results in the formation of columns of type-II ZnSe:Te quantum dots. This unique geometry permits the observation of strong Aharonov–Bohm oscillations in both the emission energy and peak intensity with increasing magnetic field. Furthermore, far-infrared optically detected resonance tec...
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B. Roy,1,2,* H. Ji,1,2 S. Dhomkar,1,2 F. J. Cadieu,1,2 L. Peng,2,3 R. Moug,3 M. C. Tamargo,2,3 Y. Kim,4 D. Smirnov,4 and I. L. Kuskovsky1,2,† 1Department of Physics, Queens College of CUNY, Flushing, New York 11367, USA 2The Graduate Center of CUNY, New York, New York 10016, USA 3Department of Chemistry, The City College of CUNY, New York, New York 10031, USA 4National High Magnetic Field Labor...
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تاریخ انتشار 2016