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Magnetic field dependence of quasi-bound Coulomb states of light holes in germanium

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Jungwirt, G. ; Kropf, R. ; Rössler, Ulrich ; Prettl, Wilhelm
Date of publication of this fulltext: 18 Oct 2010 11:55


The photothermal spectra of the shallow acceptor boron in high purity p-Ge has been investigated for various magnetic field strengths at low temperatures. A large number of lines observed at frequencies above the binding energy of boron are attributed to optical excitation of quasi-bound Coulomb states, which arise in a magnetic field below each Landau level. By comparison with calculated Landau level energies the final states of the observed transitions can be unambigously identified.

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