BCS d-wave behavior in the terahertz electrodynamic response of electron-doped cuprate superconductors
Zhenisbek Tagay, Fahad Mahmood, Anaelle Legros, Tarapada Sarkar, Richard L. Greene, N. P. Armitage
DOI 10.1103/PhysRevB.104.064501 · Physical Review B
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
Although cuprate superconductors have been intensively studied for the past decades, there is no consensus regarding the microscopic origin of their superconductivity. In this paper, we measure the low-energy electrodynamic response of slightly underdoped and overdoped La2−xCexCuO4 thin films using time-domain terahertz (THz) spectroscopy to determine the temperature and field dependence of the superfluid spectral weight. We show that the temperature dependence obeys the relation ns ∝1−(T/Tc)2, typical for dirty limit BCS-like d-wave superconductors. Furthermore, the magnetic field dependence was found to follow a sublinear B form, which supports predictions based on a d-wave symmetry for the superconducting gap. These observations imply that the superconducting order in these electron-doped cuprates can be well described in terms of a disordered BCS d-wave formalism.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | unknown |
| La2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 19 | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Quantum criticality tuned by magnetic field in optimally electron-doped cuprate thin films
similarity 0.95Xu Zhang et al.
Source status unknown — claims are unverified
Bosonic excitations and electron pairing in an electron-doped cuprate superconductor
similarity 0.95M. C. Wang et al.
Source status unknown — claims are unverified
Ultrafast dynamics in the presence of antiferromagnetic correlations in electron-doped cuprate La2−xCexCuO4±δ
similarity 0.95I. M. Vishik et al.
Source status unknown — claims are unverified
Phase Diagram of the Electron-Doped La2−xCexCuO4 Cuprate Superconductor from Andreev Bound States at Grain Boundary Junctions
similarity 0.95M. Wagenknecht et al.
Source status unknown — claims are unverified
Self-consistent gauge-invariant theory of the in-plane infrared response of high-Tc cuprate superconductors
similarity 0.94Jiří Chaloupka & Dominik Munzar
Source status unknown — claims are unverified
Low-temperature Hall effect in electron-doped superconducting La2−xCexCuO4 thin films
similarity 0.94K. Jin et al.
Source status unknown — claims are unverified