Evidence for a Nodeless Gap from the Superfluid Density of Optimally Doped Pr1.855Ce0.145CuO4-y Films

John A. Skinta; Thomas R. Lemberger; Tine Greibe; M. Natio

doi:10.1103/PhysRevLett.88.207003

Evidence for a Nodeless Gap from the Superfluid Density of Optimally Doped Pr_1.855Ce_0.145CuO_4-y Films

John A. Skinta
, Thomas R. Lemberger
, Tine Greibe
, M. Natio

Ohio State University
NTT Basic Research Laboratories

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We present measurements of the ab-plane magnetic penetration depth, λ(T), in five optimally doped Pr_1.855Ce_0.145CuO_4-y films for 1.6K≤T≤T_c∼24K. Low resistivities, high superfluid densities n_s(T)∝λ^-2(T), high T_c’s, and small transition widths are reproducible and indicative of excellent film quality. For all five films, λ^-2(T)/λ^-2(0) at low T is well fitted by an exponential temperature dependence with a gap, Δ_min, of 0.85kBTc. This behavior is consistent with a nodeless gap and is incompatible with d-wave superconductivity.

Original language	English
Article number	207003
Journal	Physical Review Letters
Volume	88
Issue number	20
Number of pages	4
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.88.207003
Publication status	Published - 2002
Externally published	Yes

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@article{5dc0986d15b44f6bbe32806de22abac2,

title = "Evidence for a Nodeless Gap from the Superfluid Density of Optimally Doped Pr1.855Ce0.145CuO4-y Films",

abstract = "We present measurements of the ab-plane magnetic penetration depth, λ(T), in five optimally doped Pr1.855Ce0.145CuO4-y films for 1.6K≤T≤Tc∼24K. Low resistivities, high superfluid densities ns(T)∝λ-2(T), high Tc{\textquoteright}s, and small transition widths are reproducible and indicative of excellent film quality. For all five films, λ-2(T)/λ-2(0) at low T is well fitted by an exponential temperature dependence with a gap, Δmin, of 0.85kBTc. This behavior is consistent with a nodeless gap and is incompatible with d-wave superconductivity.",

author = "Skinta, \{John A.\} and Lemberger, \{Thomas R.\} and Tine Greibe and M. Natio",

year = "2002",

doi = "10.1103/PhysRevLett.88.207003",

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journal = "Physical Review Letters",

issn = "0031-9007",

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TY - JOUR

T1 - Evidence for a Nodeless Gap from the Superfluid Density of Optimally Doped Pr1.855Ce0.145CuO4-y Films

AU - Skinta, John A.

AU - Lemberger , Thomas R.

AU - Greibe, Tine

AU - Natio, M.

PY - 2002

Y1 - 2002

N2 - We present measurements of the ab-plane magnetic penetration depth, λ(T), in five optimally doped Pr1.855Ce0.145CuO4-y films for 1.6K≤T≤Tc∼24K. Low resistivities, high superfluid densities ns(T)∝λ-2(T), high Tc’s, and small transition widths are reproducible and indicative of excellent film quality. For all five films, λ-2(T)/λ-2(0) at low T is well fitted by an exponential temperature dependence with a gap, Δmin, of 0.85kBTc. This behavior is consistent with a nodeless gap and is incompatible with d-wave superconductivity.

AB - We present measurements of the ab-plane magnetic penetration depth, λ(T), in five optimally doped Pr1.855Ce0.145CuO4-y films for 1.6K≤T≤Tc∼24K. Low resistivities, high superfluid densities ns(T)∝λ-2(T), high Tc’s, and small transition widths are reproducible and indicative of excellent film quality. For all five films, λ-2(T)/λ-2(0) at low T is well fitted by an exponential temperature dependence with a gap, Δmin, of 0.85kBTc. This behavior is consistent with a nodeless gap and is incompatible with d-wave superconductivity.

U2 - 10.1103/PhysRevLett.88.207003

DO - 10.1103/PhysRevLett.88.207003

M3 - Journal article

C2 - 12005592

SN - 0031-9007

VL - 88

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 207003