Перегляд за автором "Choi, K.-Y."

Сортувати за: Порядок: Результатів:

  • Comparative Raman scattering study of Ba₃MSb₂O₉ (M=Zn, Co and Cu) 
    Glamazda, A.; Lemmens, P.; Do, S.-H.; Choi, K.-Y. (Физика низких температур, 2017)
    Raman spectroscopy is combined with lattice dynamic calculations to investigate the magnetic and structural properties of the 6H-perovskite compounds Ba₃MSb₂O₉ (M = Zn, Co and Cu). Unlike the nonmagnetic Ba₃ZnSb₂O₉ compound, ...
  • Low-dimensional magnetism of spin-½ chain systems α- and β-TeVO₄: a comparative study 
    Gnezdilov, V.; Lemmens, P.; Wulferding, D.; Pashkevich, Yu.; Lamonova, K.; Choi, K.-Y.; Afanasiev, O.; Gnatchenko, S.; Berger, H. (Физика низких температур, 2012)
    We present a comparative study of the low-dimensional compounds α- and β-TeVO₄. Our data clearly show that the change in the local coordination geometry of V⁴⁺ ions comparing α- and β-TeVO₄ leads to a drastic differences in ...
  • Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions 
    Gnezdilov, V.; Choi, K.-Y.; Pashkevich, Yu.; Lemmens, P.; Shiryaev, S.; Bychkov, G.; Barilo, S.; Fomin, V.; Yeremenko, A.V. (Физика низких температур, 2006)
    One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger number of phonon modes than allowed ...
  • Phonons and magnons in stripe-ordered nickelates. A Raman scattering study 
    Gnezdilov, V.; Kurnosov, V.; Pashkevich, Yu.; Lemmens, P.; Tranquada, J.; Choi, K.-Y.; Güntherodt, G.; Nakajima, K.; Yeremenko, A. (Физика низких температур, 2005)
    Electronic correlation effects in La₂-xSrxNiO₄ (x = 1/3 and 0.225) lead to spontaneous phase separation into microscopic spin/charge stripes with commensurate and incommensurate order, respectively. Raman scattering ...