Electronic structure of CrO2 as deduced from its magneto-optical Kerr spectra

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2002
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Kune , J.
Novák, P.
Oppeneer, Pieter M.
König, Christian
Fraune, Michael
Güntherodt, Gernot
Ambrosch-Draxl, Claudia
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Physical Review B. 2002, 65, 165105. Available under: doi: 10.1103/PhysRevB.65.165105
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We report a combined experimental-computational investigation of the electronic structure of CrO2.We have measured the magneto-optical Kerr spectra of CrO2 at 10 K and 300 K. At 10 K the Kerr signal is significantly enhanced over that obtained at 300 K. We compare the measured Kerr spectra to first-principles theoretical spectra, which we computed using three different approximations to the exchange-correlation functional, i.e., the local spin-density approximation (LSDA), generalized gradient approximation (GGA), and LSDA1U. The experimental low-temperature magneto-optical Kerr spectra are best explained by calculations employing the GGA functional. The addition of an on-site Coulomb correlation U does not lead to reasonable Kerr spectra.

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ISO 690KUNE , J., P. NOVÁK, Pieter M. OPPENEER, Christian KÖNIG, Michael FRAUNE, Ulrich RÜDIGER, Gernot GÜNTHERODT, Claudia AMBROSCH-DRAXL, 2002. Electronic structure of CrO2 as deduced from its magneto-optical Kerr spectra. In: Physical Review B. 2002, 65, 165105. Available under: doi: 10.1103/PhysRevB.65.165105
BibTex
@article{Kune2002Elect-9448,
  year={2002},
  doi={10.1103/PhysRevB.65.165105},
  title={Electronic structure of CrO2 as deduced from its magneto-optical Kerr spectra},
  volume={65},
  journal={Physical Review B},
  author={Kune , J. and Novák, P. and Oppeneer, Pieter M. and König, Christian and Fraune, Michael and Rüdiger, Ulrich and Güntherodt, Gernot and Ambrosch-Draxl, Claudia},
  note={Article Number: 165105}
}
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