Erschienen:
[Erscheinungsort nicht ermittelbar]: eScholarship, University of California, 2007
Sprache:
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Entstehung:
Hochschulschrift:
Dissertation, eScholarship, University of California, 2007
Anmerkungen:
Beschreibung:
Sm̳2̳-x̳C̳ex̳CuO̳4̳-̳y belongs to a class of materials known as electron-doped superconductors (Ln̳2̳-x̳Mx̳CuO̳4̳-̳y;Ln = Pr, Nd, Sm, Eu; M = Ce, Th) and has a moderately high superconducting critical temperature, T̳c, of ̃ 20 K at optimal doping (x = 0.15). The trivalent rare earth site is doped with tetravalent Ce or Th; hence the name electron-doped". Sm̳2̳-x̳C̳ex̳CuO̳4̳-̳y also exhibits a unique magnetic structure at low temperatures (T ̲ 0.14, displaying the vortex glass melting lines. Magnetoresistance data taken as a function of angle, [theta], is also discussed in the context of the vortex glass scaling model"