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DOI | 10.1126/science.aav2327 |
Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet | |
Belopolski, Ilya1; Manna, Kaustuv2; Sanchez, Daniel S.1; Chang, Guoqing1; Ernst, Benedikt2; Yin, Jiaxin1; Zhang, Songtian S.1; Cochran, Tyler1; Shumiya, Nana1; Zheng, Hao; Singh, Bahadur3,4; Bian, Guang5; Multer, Daniel1; Litskevich, Maksim1; Zhou, Xiaoting6; Huang, Shin-Ming7; Wang, Baokai8; Chang, Tay-Rong6; Xu, Su-Yang1; Bansil, Arun8; Felser, Claudia2; Lin, Hsin9; Hasan, M. Zahid1,10,11 | |
2019-09-20 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 365期号:6459页码:1278-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; Peoples R China; Taiwan |
英文摘要 | Topological matter is known to exhibit unconventional surface states and anomalous transport owing to unusual bulk electronic topology. In this study, we use photoemission spectroscopy and quantum transport to elucidate the topology of the room temperature magnet Co2MnGa. We observe sharp bulk Weyl fermion line dispersions indicative of nontrivial topological invariants present in the magnetic phase. On the surface of the magnet, we observe electronic wave functions that take the form of drumheads, enabling us to directly visualize the crucial components of the bulk-boundary topological correspondence. By considering the Berry curvature field associated with the observed topological Weyl fermion lines, we quantitatively account for the giant anomalous Hall response observed in this magnet. Our experimental results suggest a rich interplay of strongly interacting electrons and topology in quantum matter. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000487547400040 |
WOS关键词 | QUANTUM ; ALLOYS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/202360 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Princeton Univ, Lab Topol Quantum Matter & Adv Spect B7, Dept Phys, Princeton, NJ 08544 USA; 2.Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany; 3.Shenzhen Univ, Coll Optoelect Engn, SZU NUS Collaborat Ctr, Shenzhen 518060, Peoples R China; 4.Shenzhen Univ, Coll Optoelect Engn, Int Collaborat Lab 2D Mat Optoelect Sci & Technol, Shenzhen 518060, Peoples R China; 5.Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA; 6.Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan; 7.Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan; 8.Northeastern Univ, Dept Phys, Boston, MA 02115 USA; 9.Acad Sinica, Inst Phys, Taipei 11529, Taiwan; 10.Princeton Univ, Princeton Inst Sci & Technol Mat, Princeton, NJ 08544 USA; 11.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Belopolski, Ilya,Manna, Kaustuv,Sanchez, Daniel S.,et al. Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet[J]. SCIENCE,2019,365(6459):1278-+. |
APA | Belopolski, Ilya.,Manna, Kaustuv.,Sanchez, Daniel S..,Chang, Guoqing.,Ernst, Benedikt.,...&Hasan, M. Zahid.(2019).Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet.SCIENCE,365(6459),1278-+. |
MLA | Belopolski, Ilya,et al."Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet".SCIENCE 365.6459(2019):1278-+. |
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