Author:
He 何 Xin 鑫,Zhang 张 Changling 昌玲,Li 李 Zhiwen 芷文,Zhang 张 Sijia 思佳,Feng 冯 Shaomin 少敏,Zhao 赵 Jianfa 建发,Lu 卢 Ke 可,Min 闵 Baosen 保森,Peng 彭 Yi 毅,Wang 望 Xiancheng 贤成,Song 宋 Jin 静,Wang 王 Luhong 鲁红,I. Kawaguchi Saori,Ji 吉 Cheng 诚,Li 李 Bing 冰,Liu 刘 Haozhe 浩哲,Tse J. S.,Jin 靳 Changqing 常青
Abstract
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 ∼ 3 K at around 43 GPa to ∼ 32 K at about 283 GPa (
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.
Subject
General Physics and Astronomy
Cited by
3 articles.
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