Superconducting dome in ferroelectric-type materials from soft mode instability
Journal Article
·
· Physical Review. B
- Rice University, Houston, TX (United States); OSTI
- Shanghai Jiao Tong University (China)
- University of Milan (Italy); University of Cambridge (United Kingdom)
Here we present a minimal theory of superconductivity enhancement in ferroelectric-type materials. Simple expressions for the optical mode responsible for the soft mode transition are assumed. A key role is played by the anharmonic phonon damping which is modulated by an external control parameter (electron doping or mechanical strain) causing the appearance of the soft mode. It is shown that the enhancement in the superconducting critical temperature Tc upon approaching the ferroelectric transition from either side is due to the Stokes electron-phonon scattering processes promoted by strong phonon damping effects.
- Research Organization:
- University of Florida, Gainesville, FL (United States)
- Sponsoring Organization:
- Army Research Laboratory; Army Research Office (ARO); Shanghai Municipal Science and Technology; USDOE Office of Science (SC)
- Grant/Contract Number:
- FG02-05ER46236
- OSTI ID:
- 1979774
- Journal Information:
- Physical Review. B, Journal Name: Physical Review. B Journal Issue: 2 Vol. 105; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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