Coexistence of Bulk-Nodal and Surface-Nodeless Cooper Pairings in a Superconducting Dirac Semimetal

Yang, Xian P.1; Zhong, Yigui2; Mardanya, Sougata3; Cochran, Tyler A.1; Chapai, Ramakanta4; Mine, Akifumi2; Zhang, Junyi5; Sanchez-Barriga, Jaime6,7; Cheng, Zi-Jia1; Clark, Oliver J.; Yin, Jia-Xin8; Blawaf, Joann4,9; Cheng, Guangming10; Belopolski, Ilya1; Nagashima, Tsubaki2; Najafzadeh, Sahand2; Gao, Shiyuan5; Yao, Nan10; Basrasil, Arun11; Jin, Rongying9; Chang, Tay-Ron3,12,13; Shin, Shik2,14,15; Okazaki, Kozo2,15,16; Hasan, M. Zahid1,10,17

2023-01-27

10.1103/PhysRevLett.130.046402

PHYSICAL REVIEW LETTERS   Impact Factor & Quartile

0031-9007

1079-7114

The interplay of nontrivial topology and superconductivity in condensed matter physics gives rise to exotic phenomena. However, materials are extremely rare where it is possible to explore the full details of the superconducting pairing. Here, we investigate the momentum dependence of the superconducting gap distribution in a novel Dirac material PdTe. Using high resolution, low temperature photoemission spectroscopy, we establish it as a spin-orbit coupled Dirac semimetal with the topological Fermi arc crossing the Fermi level on the (010) surface. This spin-textured surface state exhibits a fully gapped superconducting Cooper pairing structure below Tc similar to 4.5 K. Moreover, we find a node in the bulk near the Brillouin zone boundary, away from the topological Fermi arc. These observations not only demonstrate the band resolved electronic correlation between topological Fermi arc states and the way it induces Cooper pairing in PdTe, but also provide a rare case where surface and bulk states host a coexistence of nodeless and nodal gap structures enforced by spin-orbit coupling.

SCI

English

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Others

Institute for Quantum Matter, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences[DE-SC0019331] ; JSPS KAKENHI on Innovative Areas "Quantum Liquid Crystals"[MOST107-2627-E-006-001] ; NSF[DE-SC0019331] ; Princeton Center for Complex Materials (PCCM)[FA9550-20-1-0322] ; National Science Foundation (NSF)-MRSEC program[DGE-1656466] ; Special Postdoctoral Researchers Program, RIKEN["GBMF4547","GBMF9461"] ; null[DOE/BES DE-FG-02-05ER46200] ; null[DE-AC02-76SF00515] ; null[JP19H01818] ; null[JP19H00651] ; null[JP19H05826] ; null[HRSF-0067] ; null[DMR-1504226] ; null[DMR-2011750] ; null[MOST110- 2636-M-006-016] ; null[FA9550-20-1-032]

Physics

Physics, Multidisciplinary

WOS:000929471900002

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Princeton Univ, Dept Phys, Lab Topol Quantum Matter & Adv Spect B7, Princeton, NJ 08544 USA
2.Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
3.Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan
4.Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
5.Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA
6.Helmholtz Zent Berlin Mat & Energie, Elektronenspeicherring BESSY II, Albert Einstein Str 15, D-12489 Berlin, Germany
7.IMDEA Nanosci, C Faraday 9,Campus Cantoblanco, Madrid 28049, Spain
8.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
9.Univ South Carolina, Ctr Expt Nanoscale Phys, Dept Phys & Astron, Columbia, SC 29208 USA
10.Princeton Univ, Princeton Inst Sci & Technol Mat, Princeton, NJ 08544 USA
11.Northeastern Univ, Dept Phys, Boston, MA 02115 USA
12.Ctr Quantum Frontiers Res & Technol QFort, Tainan 701, Taiwan
13.Natl Ctr Theoret Sci, Phys Div, Taipei 10617, Taiwan
14.Univ Tokyo, Off Univ Prof, Kashiwa, Chiba 2778581, Japan
15.Univ Tokyo, Mat Innovat Res Ctr, Kashiwa, Chiba 2778581, Japan
16.Univ Tokyo, Transscale Quantum Sci Inst, Bunkyo Ku, Tokyo 1130033, Japan
17.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

Yang, Xian P.,Zhong, Yigui,Mardanya, Sougata,et al. Coexistence of Bulk-Nodal and Surface-Nodeless Cooper Pairings in a Superconducting Dirac Semimetal[J]. PHYSICAL REVIEW LETTERS,2023,130(4).

Yang, Xian P..,Zhong, Yigui.,Mardanya, Sougata.,Cochran, Tyler A..,Chapai, Ramakanta.,...&Hasan, M. Zahid.(2023).Coexistence of Bulk-Nodal and Surface-Nodeless Cooper Pairings in a Superconducting Dirac Semimetal.PHYSICAL REVIEW LETTERS,130(4).

Yang, Xian P.,et al."Coexistence of Bulk-Nodal and Surface-Nodeless Cooper Pairings in a Superconducting Dirac Semimetal".PHYSICAL REVIEW LETTERS 130.4(2023).