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Measurement of penetration depth [lambda](T) in YBa[sub 2]Cu[sub 3]O[sub 7-[delta]] thin film

Conference ·
OSTI ID:6489322
;  [1]; ;  [2]
  1. Ohio State Univ., Columbus, OH (United States). Dept. of Physics
  2. Los Alamos National Lab., NM (United States)
We present the magnetic penetration depth [lambda](T) in two laser ablated YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin films, determined by the two-coil method. The slope of 1/[lambda][sup 2](T) near T[sub c], the only exactly measurable quantity, extrapolates to 930[Angstrom] at T=0, which compares well with 830[Angstrom] in the high quality single crystal recently reported by Hardy et al., and which exhibited a linear T dependence at low T. For T [lt] 30K, we find [lambda](T)/[lambda](0)[minus]1 = a(T/T[sub c])[sup 2] where a=0.5.
Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
6489322
Report Number(s):
LA-UR-93-1705; CONF-930801--2; ON: DE93014587
Country of Publication:
United States
Language:
English