Superconductivity in titanium probed by AC magnetic susceptibility to 120 GPa
Jing Song(宋静)1,†, Hongyu Liu(刘红玉)1,2, Xiancheng Wang(望贤成)1, and Changqing Jin(靳常青)1,2,‡
1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; 2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
Abstract We used a highly sensitive AC magnetic susceptibility technique to probe superconductivity in elemental titanium (Ti) under extreme pressures to 120 GPa in a diamond anvil cell (DAC). The measurements reveal that the critical temperature () of Ti rises monotonically with increasing pressure, reaching 6.1 K at 120 GPa. Our results confirm the bulk nature of the superconductivity in Ti, as evidenced by a robust diamagnetic response in the AC magnetic susceptibility. Our work provides a routine technique to probe Meissner effect of elemental superconductors at megabar pressures.
(Magnetometers for susceptibility, magnetic moment, and magnetization measurements)
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2023YFA1406000) and the National Natural Science Foundation of China (Grant No. 12204514).
Corresponding Authors:
Jing Song, Changqing Jin
E-mail: jingsong@iphy.ac.cn;jin@iphy.ac.cn
Cite this article:
Jing Song(宋静), Hongyu Liu(刘红玉), Xiancheng Wang(望贤成), and Changqing Jin(靳常青) Superconductivity in titanium probed by AC magnetic susceptibility to 120 GPa 2025 Chin. Phys. B 34 047403
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