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 Title: Low Energy Electronic Raman Scattering in Cuprate High Temperature Superconductors Author(s): Kang, Moonsoo Doctoral Committee Chair(s): Klein, M.V. Department / Program: Physics Discipline: Physics Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Physics, Condensed Matter Abstract: The temperature dependence of the 2$\Delta$-peak in overdoped Tl-2201 implies that the superconducting gap opens very rapidly below the critical temperature. The measured peak intensity as a function of temperature, however, shows an anomalous behavior. A magnetic field is observed to affect Raman spectra in way similar to the way temperature does. Nevertheless, the peak intensity change as a function of magnetic field is different from that of temperature. The upper critical fields were extracted by analyzing the field dependence of the 2$\Delta$-peak intensity. The upper critical fields obtained from Raman scattering in magnetic field show that superconducting order is present above the irreversibility field obtained from magnetization measurements. Issue Date: 1997 Type: Text Language: English Description: 131 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997. URI: http://hdl.handle.net/2142/80641 Other Identifier(s): (MiAaPQ)AAI9717290 Date Available in IDEALS: 2015-09-25 Date Deposited: 1997
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