Robust zero resistance in a superconducting high-entropy alloy at pressures up to 190 GPa.
Proc Natl Acad Sci U S A
; 114(50): 13144-13147, 2017 12 12.
Article
en En
| MEDLINE
| ID: mdl-29183981
ABSTRACT
We report the observation of extraordinarily robust zero-resistance superconductivity in the pressurized (TaNb)0.67(HfZrTi)0.33 high-entropy alloy--a material with a body-centered-cubic crystal structure made from five randomly distributed transition-metal elements. The transition to superconductivity (TC ) increases from an initial temperature of 7.7 K at ambient pressure to 10 K at â¼60 GPa, and then slowly decreases to 9 K by 190.6 GPa, a pressure that falls within that of the outer core of the earth. We infer that the continuous existence of the zero-resistance superconductivity from 1 atm up to such a high pressure requires a special combination of electronic and mechanical characteristics. This high-entropy alloy superconductor thus may have a bright future for applications under extreme conditions, and also poses a challenge for understanding the underlying quantum physics.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Año:
2017
Tipo del documento:
Article
País de afiliación:
China