Assistant Professor Steve Johnston is co-author on two papers chosen by their respective journals as 2016 highlights. Both papers study the superconducting properties of iron and selenium thin films on substrates comprising strontium, titanium, and oxygen. Johnston’s post-doctoral research associate Yan Wang played a leading role in both publications.
The New Journal of Physics selected “Enhanced superconductivity due to forward scattering in FeSe thin films on SrTiO3 substrates” for its 2016 highlights list, which featured papers that best met the journal’s mission in “creating global impact for the latest advances within the research community.” The paper was originally published as a Fast Track Communication, a distinction reserved for fewer than five percent of the journal’s publications. The editors hold these papers to more rigorous standards and deem them worthy of priority peer review and a faster publication schedule to insure the research is quickly made available to other scientists. In this research, Johnston, Wang, and colleagues from Oak Ridge National Laboratory and the Kavli Institute for Theoretical Physics found that the electron-phonon coupling strongly-peaked around zero momentum transfer (known as forward scattering) may provide a signification portion of the observed high-temperature superconductivity in two-dimensional systems. A second paper exploring this idea (“Aspects of electron–phonon interactions with strong forward scattering in FeSe Thin Films on SrTiO3 substrates”) was listed among the 2016 highlights by journal editors at Superconductor Science and Technology. Both journals are published by the International of Physics Publishing group.
Both papers are available online:
- Enhanced superconductivity due to forward scattering in FeSe thin films on SrTiO3 substrates
- Aspects of electron–phonon interactions with strong forward scattering in FeSe Thin Films on SrTiO3 substrates