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- W1644857067 abstract "Optically detected resonance spectroscopy has been used to study resonant absorption of electrons, holes, and their complexes in ${mathrm{G}mathrm{a}mathrm{A}mathrm{s}/mathrm{A}mathrm{l}}_{x}{mathrm{Ga}}_{1ensuremath{-}x}mathrm{As}$ quantum wells (QW's) in magnetic fields up to 15 T. In undoped multiple-QW samples with well widths of 12.5, 15, and 20 nm, in addition to an electron and two hole cyclotron resonances, $1stackrel{ensuremath{rightarrow}}{s}{mathrm{np}}_{+,ensuremath{-}}$ (in the hydrogenic notation) internal exciton transitions (IET's) arising from two distinct neutral heavy-hole magneto-excitons were observed. The unique capability of observing electron and hole cyclotron resonance as well as several IET's in a single sample permitted verification of a predicted relationship resulting from the symmetry of the magnetoexciton Hamiltonian, namely, $ensuremath{Elzxh}({ensuremath{omega}}_{e}ensuremath{-}{ensuremath{omega}}_{h}{)=E}_{{1sensuremath{-}np}_{+}}ensuremath{-}{E}_{{1sensuremath{-}np}_{ensuremath{-}}},$ where ${ensuremath{omega}}_{e}({ensuremath{omega}}_{h})$ is the electron (hole) cyclotron frequency, and ${E}_{{1sensuremath{-}np}_{+}}$ ${(E}_{{1sensuremath{-}np}_{ensuremath{-}}})$ is the energy of the $1stackrel{ensuremath{rightarrow}}{s}{mathrm{np}}_{+}$ $(1stackrel{ensuremath{rightarrow}}{s}{mathrm{np}}_{ensuremath{-}})$ transition." @default.
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- W1644857067 date "2000-07-15" @default.
- W1644857067 modified "2023-10-18" @default.
- W1644857067 title "Internal transitions of confined neutral magnetoexcitons in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>G</mml:mi><mml:mi mathvariant=normal>a</mml:mi><mml:mi mathvariant=normal>A</mml:mi><mml:mi mathvariant=normal>s</mml:mi><mml:mo>/</mml:mo><mml:mi mathvariant=normal>A</mml:mi><mml:mi mathvariant=normal>l</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><…" @default.
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- W1644857067 doi "https://doi.org/10.1103/physrevb.62.2773" @default.
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