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Title: Optical and transport properties of the high-temperature cuprate superconductor La₂₋ˣSrˣCuO₄
Author: Cooper, Rosemary Alice
ISNI:       0000 0004 2677 4151
Awarding Body: University of Bristol
Current Institution: University of Bristol
Date of Award: 2009
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This thesis describes measurements of the optical and d.c. electrical conductivity of a family of high-temperature superconductors. For this purpose, an optical spectroscopy laboratory was constructed, incorporating a commercial infrared spectrometer and a homemade continuous-flow optical cryostat. The performance of the experimental set-up was studied through comparison with recent, high-quality, reflectance data on heavily over doped La2-xSra;Cu04 (LSCO) with x = 0.28, which was measured by the Timusk group at McMaster University, Canada. Excellent agreement, to within 1%, was found and thus, a working experiment was realized. The system is capable of measurements at temperatures n the range 12 - 350K, from the far-infrared to the near-infrared (~ 40 - 10,000cm ⁻¹). The overall experimental uncertainty in the reflectance data does not exceed ±0.5%.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available