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<p>Using second-order perturbation theory, we investigated the combined effects of temperature, hydrostatic pressure, and aluminum concentration on the optically detected magneto-phonon resonance and full width at half maximum (FWHM) in a Morse confinement potential quantum well subjected to a transverse electric field. The physical properties of the magneto-phonon resonance spectrum were analyzed through the magneto-optical absorption coefficient (MOAC) in both one- and two-photon absorption processes, accompanied by optical phonon emission and absorption processes. Our numerical calculations for a specific quantum well <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11082_2025_8341_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="134" /> </InlineMediaObject> <EquationSource Format="TEX">\(\text {GaAs/Al}_{\nu }\text {Ga}_{1-\nu }\text {As}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mtext>GaAs/Al</mtext> <mi>ν</mi> </msub> <msub> <mtext>Ga</mtext> <mrow> <mn>1</mn> <mo>-</mo> <mi>ν</mi> </mrow> </msub> <mtext>As</mtext> </mrow> </math></EquationSource> </InlineEquation> show a strong dependence of MOAC and FWHM on aluminum concentration, temperature, hydrostatic pressure, and transverse electric field. The red and blue shift behaviors of absorption peaks, along with the variations in FWHM for the phonon absorption and emission processes as influenced by these parameters, are discussed in particular. These findings highlight the possibility of controlling the magneto-optical properties of quantum wells by tuning these parameters, offering new avenues for future magneto-optical device applications.</p>

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Combined effects of hydrostatic pressure, temperature, and aluminum concentration on optically detected magneto-phonon resonance of \(\text {GaAs/Al}_{\nu }\text {Ga}_{1-\nu }\text {As}\) quantum wells with Morse confinement potential under transverse electric field

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • Nguyen Cong Toan,
  • Nguyen Quang Hoc,
  • Nguyen Chinh Cuong,
  • Le Nguyen Dinh Khoi,
  • Ngo Quang Duc,
  • Tran Van Phuc,
  • Lanh Thi Hoan Dieu,
  • Phan Thanh Tung,
  • Nguyen Dang Quang Huy,
  • Anh-Tuan Tran

摘要

Using second-order perturbation theory, we investigated the combined effects of temperature, hydrostatic pressure, and aluminum concentration on the optically detected magneto-phonon resonance and full width at half maximum (FWHM) in a Morse confinement potential quantum well subjected to a transverse electric field. The physical properties of the magneto-phonon resonance spectrum were analyzed through the magneto-optical absorption coefficient (MOAC) in both one- and two-photon absorption processes, accompanied by optical phonon emission and absorption processes. Our numerical calculations for a specific quantum well \(\text {GaAs/Al}_{\nu }\text {Ga}_{1-\nu }\text {As}\) GaAs/Al ν Ga 1 - ν As show a strong dependence of MOAC and FWHM on aluminum concentration, temperature, hydrostatic pressure, and transverse electric field. The red and blue shift behaviors of absorption peaks, along with the variations in FWHM for the phonon absorption and emission processes as influenced by these parameters, are discussed in particular. These findings highlight the possibility of controlling the magneto-optical properties of quantum wells by tuning these parameters, offering new avenues for future magneto-optical device applications.