J. C. Cezar

Publications (2)2.55 Total impact

• Article: BaVS3 probed by V L edge x-ray absorption spectroscopy

  V. Ilakovac, N. B. Brookes, J. C. Cezar, P. Thakur, V. Bisogni, C. Dallera, G. Ghiringhelli, L. Braicovich, S. Bernu, H. Berger, L. Forr´o, A. Akrap, C. F. Hague
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  ABSTRACT: Polarization dependent vanadium L edge x-ray absorption spectra of BaVS3 single crystals are measured in the four phases of the compound. The difference between signals with the polarizations E ? c and E k c (linear dichroism) changes with temperature. Besides increasing the intensity of one of the maxima, a new structure appears in the pre-edge region below the metal–insulator transition. More careful examination brings to light that the changes start already with pretransitional charge density wave fluctuations. Simple symmetry analysis suggests that the effect is related to rearrangements in the Eg and A1g states, and is compatible with the formation of four inequivalent V-sites along the V–S chain.
  Journal of Physics Condensed Matter 01/2012; 24(4):045503. · 2.55 Impact Factor
• Article: Direct observation of oxygen induced room temperature ferromagnetism in MoO[sub 2] thin films by x-ray magnetic circular dichroism characterizations

  P. Thakur, J. C. Cezar, N. B. Brookes, R. J. Choudhary, Ram Prakash, D. M. Phase, K. H. Chae, Ravi Kumar
  Applied Physics Letters. 01/2009; 94(6):062501.