Role of Normal Layers in Penetration Depth Determinations of the Pairing State in High- Tc Superconductors

Richard A. Klemm; Samuel H. Liu

doi:10.1103/PhysRevLett.74.2343

← Back to search

Role of Normal Layers in Penetration Depth Determinations of the Pairing State in High- Tc Superconductors

Richard A. Klemm, Samuel H. Liu

DOI 10.1103/PhysRevLett.74.2343 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We calculate the penetration depth λT for a model of the high- Tc superconductors based upon proximity coupling between one superconducting S and one normal N layer per unit cell. The linear, low- T region of the λabT data of Bonn et al. on YBa2Cu3O7−δ is fitted quantitatively for both s-wave and dx2−y2 order parameters. However, these fitted models give very different predictions for λcT, which may serve as a new test for the order parameter, or at least for the role of N layers.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nd1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown