Next Article in Journal
Spiral Thermal Waves Generated by Self-Propelled Camphor Boats
Next Article in Special Issue
A Retrospective of Materials Synthesis at the Paul Scherrer Institut (PSI)
Previous Article in Journal
Phenomenon of Electromagnetic Field Resonance in Metal and Dielectric Gratings and Its Possible Practical Applications
Previous Article in Special Issue
A Lattice Litany for Transition Metal Oxides
Article

Suppression of the s-Wave Order Parameter Near the Surface of the Infinite-Layer Electron-Doped Cuprate Superconductor Sr0.9La0.1CuO2

1
Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
2
Department of Physics, Tbilisi State University, Chavchavadze 3, GE-0128 Tbilisi, Georgia
3
Laboratory for Material Behaviour, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
4
Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
*
Author to whom correspondence should be addressed.
Condens. Matter 2020, 5(3), 50; https://doi.org/10.3390/condmat5030050
Received: 29 June 2020 / Revised: 17 July 2020 / Accepted: 24 July 2020 / Published: 3 August 2020
The temperature dependencies of the in-plane (λab) and out-of-plane (λc) components of the magnetic field penetration depth were investigated near the surface and in the bulk of the electron-doped superconductor Sr0.9La0.1CuO2 by means of magnetization measurements. The measured λab(T) and λc(T) were analyzed in terms of a two-gap model with mixed s+d-wave symmetry of the order parameter. λab(T) is well described by an almost pure anisotropic d-wave symmetry component (96%), mainly reflecting the surface properties of the sample. In contrast, λc(T) exhibits a mixed s+d-wave order parameter with a substantial s-wave component of more than 50%. The comparison of λab2(T) measured near the surface with that determined in the bulk by means of the muon-spin rotation/relaxation technique demonstrates that the suppression of the s-wave component of the order parameter near the surface is associated with a reduction of the superfluid density by more than a factor of two. View Full-Text
Keywords: superconductivity; cuprates; magnetic penetration depth; order parameter; superconducting gap structure superconductivity; cuprates; magnetic penetration depth; order parameter; superconducting gap structure
Show Figures

Figure 1

MDPI and ACS Style

Khasanov, R.; Shengelaya, A.; Brütsch, R.; Keller, H. Suppression of the s-Wave Order Parameter Near the Surface of the Infinite-Layer Electron-Doped Cuprate Superconductor Sr0.9La0.1CuO2. Condens. Matter 2020, 5, 50. https://doi.org/10.3390/condmat5030050

AMA Style

Khasanov R, Shengelaya A, Brütsch R, Keller H. Suppression of the s-Wave Order Parameter Near the Surface of the Infinite-Layer Electron-Doped Cuprate Superconductor Sr0.9La0.1CuO2. Condensed Matter. 2020; 5(3):50. https://doi.org/10.3390/condmat5030050

Chicago/Turabian Style

Khasanov, Rustem, Alexander Shengelaya, Roland Brütsch, and Hugo Keller. 2020. "Suppression of the s-Wave Order Parameter Near the Surface of the Infinite-Layer Electron-Doped Cuprate Superconductor Sr0.9La0.1CuO2" Condensed Matter 5, no. 3: 50. https://doi.org/10.3390/condmat5030050

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop