摘要
Superconductivity is one of most intriguing quantum phenomena,and the quest for elemental superconductors with high critical temperature(T_(c))is of great scientific significance due to their relatively simple material composition and the underlying mechanism.Here we report the experimental discovery of densely compressed scandium(Sc)becoming the first elemental superconductor with T_(c)breaking into 30 K range,which is comparable to the T_(c)values of the classic La-Ba-Cu-O or LaFeAsO superconductors.Our results show that T_(c)^(onset)of Sc increases from~3K at around 43GPa to~32K at about 283GPa(T_(c)^(zero)~31 K),which is well above liquid neon temperature.Interestingly,measured T_(c)shows no sign of saturation up to the maximum pressure achieved in our experiments,indicating that T_(c)may be even higher upon further compression.
作者
何鑫
张昌玲
李芷文
张思佳
冯少敏
赵建发
卢可
闵保森
彭毅
望贤成
宋静
王鲁红
Saori I.Kawaguchi
吉诚
李冰
刘浩哲
J.S.Tse
靳常青
Xin He;Changling Zhang;Zhiwen Li;Sijia Zhang;Shaomin Feng;Jianfa Zhao;Ke Lu;Baosen Min;Yi Peng;Xiancheng Wang;Jin Song;Luhong Wang;Saori I.Kawaguchi;Cheng Ji;Bing Li;Haozhe Liu;J.S.Tse;Changqing Jin(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;Shanghai Advanced Research in Physical Sciences,Shanghai 201203,China;Japan Synchrotron Radiation Research Institute,SPring-8,Sayo-gun Hyogo 679-5198,Japan;Center for High Pressure Science&Technology Advanced Research,Beijing 100094,China;Department of Physics,University of Saskatchewan,Canada)
基金
supported by the National Key R&D Program of China(Grant No.2021YFA1401800,2022YFA1403800,and 2022YFA1403900)
the National Natural Science Foundation of China(Grant Nos.11921004 and U2032220)
Chinese Academy of Sciences(Grant No.XDB33010200)
NSERC Canada for a Discovery Grant。
