Superconductivity in Compression-Shear Deformed Diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-04-06 |
| Journal | Physical Review Letters |
| Authors | Chang Liu, Xianqi Song, Quan Li, Yanming Ma, Changfeng Chen |
| Institutions | Jilin University, State Key Laboratory of Superhard Materials |
| Citations | 102 |
Abstract
Section titled āAbstractāDiamond is a prototypical ultrawide band gap semiconductor, but turns into a superconductor with a critical temperature T_{c}ā4 K near 3% boron doping [E. A. Ekimov et al., Nature (London) 428, 542 (2004)NATUAS0028-083610.1038/nature02449]. Here we unveil a surprising new route to superconductivity in undoped diamond by compression-shear deformation that induces increasing metallization and lattice softening with rising strain, producing phonon mediated T_{c} up to 2.4-12.4 K for a wide range of Coulomb pseudopotential Ī¼^{*}=0.15-0.05. This finding raises intriguing prospects of generating robust superconductivity in strained diamond crystal, showcasing a distinct and hitherto little explored approach to driving materials into superconducting states via strain engineering. These results hold promise for discovering superconductivity in normally nonsuperconductive materials, thereby expanding the landscape of viable nontraditional superconductors and offering actionable insights for experimental exploration.