Journal
PHYSICAL REVIEW B
Volume 93, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.174105
Keywords
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Funding
- ARO [W911NF-13-1-0231]
- DARPA [W31P4Q1210008, W31P4Q1310005]
- NSF [EAR-1520648, 1531583]
- NSFC [21473211]
- National Science Foundation-Earth Sciences [EAR-1128799]
- Department of Energy-Geosciences [DE-FG02-94ER14466]
- U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- National Science Foundation [EAR-1114313, DMR-1231586]
- Ministry of Education and Science of Russian Federation [8512, 14.B25.31.0032]
- Foreign Talents Introduction and Academic Exchange Program [B08040]
- DOE-BES [DE-AC02-98CH10086]
- European Community [FP7/2007-2013, 312284]
- [14.A12.31.0003]
- Division Of Earth Sciences
- Directorate For Geosciences [1531583] Funding Source: National Science Foundation
Ask authors/readers for more resources
Hydrogen sulfide (H2S) was studied by x-ray synchrotron diffraction and Raman spectroscopy up to 150 GPa at 180-295 K and by quantum-mechanical variable-composition evolutionary simulations. The experiments show that H2S becomes unstable with respect to formation of compounds with different structure and composition, including Cccm and a body-centered cubic like (R3m or Im-3m) H3S, the latter one predicted previously to show a record-high superconducting transition temperature, a T-c of 203 K. These experiments provide experimental ground for understanding of this record-high T-c. The experimental results are supported by theoretical structure searches that suggest the stability of H3S, H4S3, H5S8, H3S5, and HS2 compounds that have not been reported previously at elevated pressures.
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