论文类型：期刊论文
第一作者：K. Huang
通讯作者：Y. L. Chen,Z. K. Liu,Y. F. Guo,G. Xu
合写作者：L. X. Yang,H. F. Yang,Eli Rotenberg,Aaron Bostwick,Chris Jozwiak,Z. Sun,S. T. Cui,F. Wu,Y. W. Li,X. L. Liu,G. N. Zhang,C. Chen,A. Y. Luo
发表刊物：Physical Review B
收录刊物：SCI
学科门类：理学
一级学科：物理学
文献类型：J
卷号：103
期号：15
页面范围：155148
ISSN号：2469-9950
发表时间：2021-04-26
影响因子：3.908
摘要：The interplay between topological electronic structure and superconductivity has attracted tremendous research interests recently as they could induce topological superconductivity (TSCs) which may be used to realize topological qubits for quantum computation. Among various TSC candidates, superconducting BaSn3 (Tc∼4.4 K) has been predicted to be a topological Dirac semimetal (TDS) hosting two pairs of Dirac points along the Γ-A direction. Here, by combining the use of angle-resolved photoemission spectroscopy and ab initio calculations, we identified the predicted topological Dirac fermions and confirmed the TDS nature of the compound. In addition, we observed surface states connecting the Dirac points. Our observations demonstrate BaSn3 as a superconductor with nontrivial topological electronic structures.