@Article{LafrentzBKPHPYSBARB:2010:OpThSp,
               author = "Lafrentz, M. and Brunne, D. and Kaminski, B. and Pavlov, V. V. and 
                         Henriques, A. B. and Pisarev, R. V. and Yakovlev, D. R. and 
                         Springholz, G. and Bauer, G. and Abramof, Eduardo and Rappl, P. H. 
                         O. and Bayer, M.",
          affiliation = "{Technische Universit{\"a}t Dortmund} and {Technische 
                         Universit{\"a}t Dortmund} and {} and {Russian Academy of 
                         Sciences} and {Johannes Kepler Universit{\"a}t Linz} and 
                         Institute f{\"u}r Halbleiter- und Festk{\"o}rperphysik, Johannes 
                         Kepler Universit{\"a}t Linz, 4040 Linz, Austria and {} and {} and 
                         {Technische Universit{\"a}t Dortmund} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Optical third-harmonic spectroscopy of the magnetic semiconductor 
                         EuTe",
              journal = "Physical Review B",
                 year = "2010",
               volume = "82",
               number = "23",
                pages = "235206",
             keywords = "spectroscopy, magnetic semiconductor EuTe.",
             abstract = "EuTe possesses the centrosymmetric crystal structure m3m of 
                         rocksalt type in which the second-harmonic generation is forbidden 
                         in electric dipole approximation but the third-harmonic generation 
                         (THG) is allowed. We studied the THG spectra of this material and 
                         observed several resonances in the vicinity of the band gap at 
                         2.22.5 eV and at higher energies up to 4 eV, which are related to 
                         four-photon THG processes. The observed resonances are assigned to 
                         specific combinations of electronic transitions between the ground 
                         4f7 state at the top of the valence band and excited 4f65d1 states 
                         of Eu2+ ions, which form the lowest energy conduction band. 
                         Temperature, magnetic field, and rotational anisotropy studies 
                         allowed us to distinguish crystallographic and 
                         magnetic-field-induced contributions to the THG. A strong 
                         modification of THG intensity for the 2.4 eV band and suppression 
                         of the THG for the 3.15 eV band was observed in applied magnetic 
                         field. Two main features of the THG spectra were assigned to 
                         5d(t2g) and 5d(eg) subbands at 2.4 eV and 3.15 eV, respectively. A 
                         microscopic quantum-mechanical model of the THG response was 
                         developed and its conclusions are in qualitative agreement with 
                         the experimental results.",
                  doi = "10.1103/PhysRevB.82.235206",
                  url = "http://dx.doi.org/10.1103/PhysRevB.82.235206",
                 issn = "1098-0121",
             language = "en",
           targetfile = "PhysRevB.82.235206.pdf",
        urlaccessdate = "02 maio 2024"
}