Back to Search
Start Over
Pressure-induced superconducting CS2H10 with an H3S framework.
- Source :
- Physical Chemistry Chemical Physics (PCCP); 10/21/2021, Vol. 23 Issue 39, p22779-22784, 6p
- Publication Year :
- 2021
-
Abstract
- The discovery of the high-temperature superconducting state in the compounds of hydrogen, carbon and sulfur with a critical temperature (T<subscript>c</subscript>) of 288 K at high pressure is an important milestone towards room-temperature superconductors. Here, we have extensively investigated the high-pressure phases of CS<subscript>2</subscript>H<subscript>10</subscript>, and found four phases Cmc2<subscript>1</subscript>, P3m1, P3¯m1 and Pm. Among them, P3m1 can be dynamically stable at a pressure as low as 50 GPa, and Cmc2<subscript>1</subscript> has a high T<subscript>c</subscript> of 155 K at 150 GPa. Both Cmc2<subscript>1</subscript> and P3m1 are host–guest hydrides, in which CH<subscript>4</subscript> molecules are inserted into Im3¯m-H<subscript>3</subscript>S and R3m-H<subscript>3</subscript>S sublattices, respectively. Their T<subscript>c</subscript> is dominated by the H<subscript>3</subscript>S lattice inside. The insertion of CH<subscript>4</subscript> molecules greatly reduces the pressure required for the stability of the original H<subscript>3</subscript>S lattice, but it has a negative impact on superconductivity which cannot be ignored. By studying the effect of CH<subscript>4</subscript> insertion in the H<subscript>3</subscript>S lattice, we can design hydrides with a T<subscript>c</subscript> close to that of H<subscript>3</subscript>S and a greatly reduced pressure required for stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639076
- Volume :
- 23
- Issue :
- 39
- Database :
- Complementary Index
- Journal :
- Physical Chemistry Chemical Physics (PCCP)
- Publication Type :
- Academic Journal
- Accession number :
- 153022381
- Full Text :
- https://doi.org/10.1039/d1cp03270d