TY - JOUR
KW - Superconducting films
KW - Magnetoresistance
KW - Perovskite
KW - Manganese
KW - High temperature superconductors
KW - Magnetic properties
KW - Electric conductivity of solids
KW - Magnetic variables measurement
KW - Direct current resistivity
KW - Surface resistances
AU - S.E Lofland
AU - M Dominguez
AU - S.D Tyagi
AU - S.M Bhagat
AU - M.C Robson
AU - C Kwon
AU - Z Trajanovic
AU - I Takeuchi
AU - Ramamoorthy Ramesh
AU - T Venkatesan
AB - We present a systematic study of the surface resistance of perovskite thin films and bulk samples at microwave frequencies. The d.c. resistivity p of the various samples spans three orders of magnitude. For bulk samples, we obtain the usual ρ1/2 dependence of Rs. For ρ < 1 μΩ cm, Rs displays conventional behavior, i.e. Rs α ρ. However, for ρ > 1 μΩ cm, Rs is not proportional to ρ but to the conductivity σ. Using this fact, we have made the first direct observation of a peak in σ1, just below Tc in a-axis films of YBa2Cu3O7.
BT - Thin Solid Films
LA - eng
M1 - 1-2
N1 - cited By 28
N2 - We present a systematic study of the surface resistance of perovskite thin films and bulk samples at microwave frequencies. The d.c. resistivity p of the various samples spans three orders of magnitude. For bulk samples, we obtain the usual ρ1/2 dependence of Rs. For ρ < 1 μΩ cm, Rs displays conventional behavior, i.e. Rs α ρ. However, for ρ > 1 μΩ cm, Rs is not proportional to ρ but to the conductivity σ. Using this fact, we have made the first direct observation of a peak in σ1, just below Tc in a-axis films of YBa2Cu3O7.
PY - 1996
SP - 256
EP - 261
T2 - Thin Solid Films
TI - Surface resistance of thin Perovskite films - High-temperature superconductors and giant magnetoresistance manganites
VL - 288
SN - 00406090
ER -