Thesis (Ph. D.)--University of Chicago, 1912. / "Reprinted from the Physical review, vol. XXXIV, no. 4, April, 1912." Bibliography: p. 294-295.

Inaug.-diss.--Marburg. / Lebenslauf.

Inaug.-diss.--Bonn. / Vita.

Inaug.-diss.--Erlangen. / Lebenslauf.

Thesis (Ph. D.)--University of Chicago, 1912. / "Reprinted from the Physical review, vol. XXXIV, no. 4, April, 1912." Bibliography: p. 294-295. Also available on the Internet.

Magnetic dependence of low temperature specific heat down to 0.6K is used to investigate the pairing symmetry of unconventional superconductor CeRu2. At low temperature Debye model highly deviated the 8T data serving as normal state below small magnetic anomaly shown around 6K. Based on the entropy conservation of superconducting transition, superconducting order parameters of s-wave and d-wave could not both be well described specific heat data at zero field. However, two-gap model, £GS=0.80 meV and £GL=1.01 meV, is better to describe the pairing symmetry of CeRu2. This might be the controversies among the earlier reports. Magnetic susceptibility and resistance under magnetic filed are both used to investigate the small anomaly, excluding double superconducting phase. Moreover, two rounds of specific-heat measurement both show the magnetic anomaly and might lead to an intrinsic property.

In this thesis we synthesize Pr1.85Ce0.15CuO4 system by mean of X-ray diffraction, electrical resistivity, magnetic susceptibility and low-temperature specific heat. From these data analysis, we hope to more clearly understand the transition of electron-doped superconductor Pr2-xCexCuO4 (0.14<x<0.7) system. The main results show that the system is d-wave pairing symmetry. This conclusion is consisted with C. C. Tsuei¡¦s result. They present phase-sensitive evidence that the electron-doped cuprates Pr1.85Ce0.15CuO4 have d-wave pairing symmetry.

Dissertation : Physics : Chicago : 1917. / Notes bibliographiques.

No description available.

No description available.