Superconductivity in highly disordered dense carbon disulfide

被引:35
|
作者
Dias, Ranga P. [1 ,2 ]
Yoo, Choong-Shik [1 ,2 ]
Struzhkin, Viktor V. [3 ]
Kim, Minseob [1 ,2 ]
Muramatsu, Takaki [3 ]
Matsuoka, Takahiro [4 ]
Ohishi, Yasuo [4 ]
Sinogeikin, Stanislav [5 ]
机构
[1] Washington State Univ, Dept Phys, Inst Shock Phys, Pullman, WA 99164 USA
[2] Washington State Univ, Dept Chem, Inst Shock Phys, Pullman, WA 99164 USA
[3] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA
[4] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan
[5] Carnegie Inst Washington, Geophys Lab, High Pressure Collaborat Access Team, Argonne, IL 60439 USA
基金
美国国家科学基金会;
关键词
extended solids; magnetic ordering; metallization; nonconventional superconductors; non-Fermi liquids; TEMPERATURE; DEPENDENCE; PRESSURE; NITRIDE;
D O I
10.1073/pnas.1305129110
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
High pressure plays an increasingly important role in both understanding superconductivity and the development of new superconducting materials. New superconductors were found in metallic and metal oxide systems at high pressure. However, because of the filled close-shell configuration, the superconductivity in molecular systems has been limited to charge-transferred salts and metal-doped carbon species with relatively low superconducting transition temperatures. Here, we report the low-temperature superconducting phase observed in diamagnetic carbon disulfide under high pressure. The superconductivity arises from a highly disordered extended state (CS4 phase or phase III[CS4]) at similar to 6.2 K over a broad pressure range from 50 to 172 GPa. Based on the X-ray scattering data, we suggest that the local structural change from a tetrahedral to an octahedral configuration is responsible for the observed superconductivity.
引用
收藏
页码:11720 / 11724
页数:5
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