The low temperature magnetic structure of superconducting FeTeOx films
Abstract
We compare the temperature dependent magnetic structure of superconducting FeTeOx and non-superconducting FeTe films using neutron diffraction. Both show an antiferromagnetic transition below 70 K. The major difference between the two is that the superconducting FeTeOx film shows a distinct reduction in magnetic order around the superconducting transition temperature (13 K) while the non-superconducting FeTe film shows a smoothly developing magnetic order as a function of temperature. Preliminary Mössbauer spectroscopy studies done on the superconducting FeTeOx indicate that film undergoes an antiferromagnetic transition below 50 K and magnetic order still exists in superconducting state.
Supported by DOE/BES through contract DE-FG02-00ER45801 (Uconn).- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2014
- Bibcode:
- 2014APS..MARQ13006N