TY - JOUR
T1 - Exponential Temperature Dependence of the Penetration Depth in Single Crystal [Formula presented]
AU - Manzano, F.
AU - Carrington, A.
AU - Hussey, N. E.
AU - Lee, S.
AU - Yamamoto, A.
AU - Tajima, S.
PY - 2002
Y1 - 2002
N2 - The temperature dependence of the London penetration depth, [Formula presented], was measured in both single crystal and polycrystalline [Formula presented] samples by a high-resolution, radio frequency technique. A clear exponential temperature dependence of [Formula presented] was observed at low temperature, indicating [Formula presented]-wave pairing. A BCS fit to the lowest temperature data gives an in-plane energy gap [Formula presented] of [Formula presented] [Formula presented], which is significantly smaller than the standard BCS weak coupling value of 3.5. We find that the data are best described by a two-gap model.
AB - The temperature dependence of the London penetration depth, [Formula presented], was measured in both single crystal and polycrystalline [Formula presented] samples by a high-resolution, radio frequency technique. A clear exponential temperature dependence of [Formula presented] was observed at low temperature, indicating [Formula presented]-wave pairing. A BCS fit to the lowest temperature data gives an in-plane energy gap [Formula presented] of [Formula presented] [Formula presented], which is significantly smaller than the standard BCS weak coupling value of 3.5. We find that the data are best described by a two-gap model.
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U2 - 10.1103/PhysRevLett.88.047002
DO - 10.1103/PhysRevLett.88.047002
M3 - Article
AN - SCOPUS:84875406739
SN - 0031-9007
VL - 88
SP - 4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 4
ER -