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Two-dimensional correlation analysis of raman spectra of superconducting YNi2B2C

Title
Two-dimensional correlation analysis of raman spectra of superconducting YNi2B2C
Authors
Jung Y.M.Kim S.B.Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2004
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
vol. 45, no. 3, pp. 652 - 655
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
This paper demonstrates the potential of two-dimensional (2D) correlation analysis for characterizing the effect of magnetic fields on the Raman spectra of superconducting YNi2IB2C single crystal. The synchronous 2D Raman correlation spectrum from the magnetic field-dependent Raman spectra of superconducting YNi2B2 C single crystal reveals that the two prominent peaks at 204 and 42 cm-1 are strongly positively correlated, in accordance with the BCS theory. Moreover, the superconducting gap peak at 42 cm-1 shows much greater variation in intensity than the phonon peak at 204 cm-1. The corresponding asynchronous 2D Raman correlation spectrum suggests that the decrease in the intensity of the phonon peak at 204 cm-1 occurs before that of the gap peak at 42 cm-1 with the applied magnetic field.
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자연과학대학 > 물리학전공 > Journal papers
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