Localized GHz frequency electrodynamic behavior of an optimally-doped Ba(Fe1-xCox)2As2 epitaxial film
Abstract
High frequency (several GHz) electrodynamic properties of a high-quality epitaxial, single-crystal Iron-Pnictide Ba(Fe1-xCox)2As2 thin film near optimal doping (x = 0.08) are measured under a localized and strong RF magnetic field created by a near-field microwave microscope. Linear response and third harmonic electrodynamic measurements are performed to understand the electromagnetic properties of Ba(Fe1-xCox)2As2 and contrasts are drawn with similar measurements on Nb. Our measurement results show that Ba(Fe1-xCox)2As2 has nonlinear response potentially arising from a number of mechanisms and may show evidence of a multi-gap nature.
- Publication:
-
Physica C Superconductivity
- Pub Date:
- January 2017
- DOI:
- 10.1016/j.physc.2016.11.014
- Bibcode:
- 2017PhyC..532...44T
- Keywords:
-
- Iron-Pnictide;
- Ba(Fe<SUB>1-x</SUB>Co<SUB>x</SUB>)<SUB>2</SUB>As<SUB>2</SUB>;
- Superconductivity;
- Microwave frequency measurement;
- Niobium