Parallel magnetotransport in multiple quantum well structures

Sheregii, E. M.; Płoch, D.; Marchewka, M.; Tomaka, G.; Kolek, Andrzej; Stadler, A. W.; Mleczko, K.; Strupiński, Włodek; Jasik, A.; Jakieła, R.

doi:10.1063/1.1819862

Cited by 4 publications

(6 citation statements)

References 23 publications

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“…The structures are consisted from single In x Ga 1-x As QW and from the two In y Al 1-y As layers-barriers. Four types (see Table 1) of different forms of structures with a single QW (SQW) were produced by MOCVD on semi-insulating GaAs at ITME by W. Strupiński group and tested at the Center for Microelectronics and Nanotechnology at the University of Rzeszów during the years 2005-2014 [12,13]. After that, the program of producing double quantum wells (DQW) and multiple quantum wells (MQW) was developed in years 2015-2018 [14][15][16].…”

Section: Modeling Of Quasi-rectangular Qw Based On the Ingaas/inalgaamentioning

confidence: 99%

“…This fact that we are dealing with an excellent rectangular quantum well confirms the experimental magneto-transport curves obtained for QW 1098. Table 1) with asymmetric shape of QW [12,13].…”

Section: Special Engineering Of a Rectangular Qwmentioning

confidence: 99%

“…Interpretation of the QHE curve and magnetoresistance curve for three-angle SQW 1088 [12,13]. Figure 11.…”

Section: Special Engineering Of a Rectangular Qwmentioning

confidence: 99%

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Realization of the Quantum Confinement

Sheregii¹

2020

Quantum Mechanics

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In this chapter the three main technologies are described, which allows for the implementation of quantum structures (QS)-quantum wells (QWs) and heterostructures. These are liquid phase epitaxy (LPE), molecular beam epitaxy (MBE), and metal-organic chemical vapor deposition (MOCVD). The most important properties, including the quantum Hall effect (QHE), of two-dimensional electron gas (2DEG) arising in a heterojunction on the boundary of two phases-the socalled interface-are also presented. The 2DEG properties in different kinds of QW are described. Double quantum wells as interesting example of quantum structure is considered also including such a spectacular quantum-mechanical phenomenon as splitting into symmetrical and anti-symmetrical states.

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Section: Modeling Of Quasi-rectangular Qw Based On the Ingaas/inalgaamentioning

confidence: 99%

Section: Special Engineering Of a Rectangular Qwmentioning

confidence: 99%

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Realization of the Quantum Confinement

Sheregii¹

2020

Quantum Mechanics

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“…The method of producing the structures with a single QW, which was reported earlier [23,24], was used also for producing DQW structure with rectangular, as well as triangular QWs. The structure of the first type (#2506) consists of two In 0.65 Ga 0.…”

Section: Description Of the Structuresmentioning

confidence: 99%

“…The symmetric and anti-symmetric states differ from one another because the symmetric properties of their wave functions are different. To the best of our knowledge, in the papers published by far, except of our short communications [21,22], the consequences of this essential difference between the symmetric properties of the electron's wave functions were not treated properly. It is worth to be mentioned also, that the magnetotransport phenomena in such structures were not analyzed previously by taking into account the accurately calculated energies of Landau levels (LL).…”

Section: Introductionmentioning

confidence: 99%

Magnetospectroscopy of symmetric and anti-symmetric states in double quantum wells

Marchewka

Sheregii

Tralle

et al. 2008

Physica E: Low-dimensional Systems and Nanostructures

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Abstract. The experimental results obtained for the magneto-transport in the InGaAs/InAlAs double quantum wells (DQW) structures of two different shapes of wells are reported. The beating-effect occurred in the Shubnikov-de Haas (SdH) oscillations was observed for both types of the structures at low temperatures in the parallel transport when magnetic field was perpendicular to the layers. An approach to the calculation of the Landau levels energies for DQW structures was developed and then applied to the analysis and interpretation of the experimental data related to the beating-effect. We also argue that in order to account for the observed magnetotransport phenomena (SdH and Integer Quantum Hall effect), one should introduce two different quasi-Fermi levels characterizing two electron sub-systems regarding symmetry properties of their states, symmetric and anti-symmetric ones which are not mixed by electron-electron interaction. Magnetospectroscopy of symmetric and anti-symmetric states in double quantum wells2

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Magnetophonon resonance in double quantum wells

et al. 2009

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The experimental results obtained for the magnetotransport in pulsed magnetic fields in the InGaAs/InAlAs double quantum well ͑DQW͒ structures of two different shapes of wells and different values of the electron density are reported. The magnetophonon resonance ͑MPR͒ was observed for both types of structures within the temperature range 77-125 K. Four kinds of LO phonons are taken into account to interpret the MPR oscillations in the DQW and a method of the Landau level calculation in the DQW is elaborated for this aim. The peculiarity of the MPR in the DQW is the large number of the Landau levels caused by SAS splitting of the electron states ͑splitting on the symmetric and anti-symmetric states͒ and the large number of the phonon assistance electron transitions between Landau levels. The significant role of the carrier statistics is shown too. The behavior of the electron states in the DQWs at comparably high temperatures has been studied using the MPR. It is shown that the Huang and Manasreh ͓Manasreh ͓Phys. Rev. B 54, 2044 ͑1996͔͒ model involving screening of exchange interaction is confirmed.

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Parallel magnetotransport in multiple quantum well structures

Cited by 4 publications

References 23 publications

Realization of the Quantum Confinement

Realization of the Quantum Confinement

Magnetospectroscopy of symmetric and anti-symmetric states in double quantum wells

Magnetophonon resonance in double quantum wells

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