Evidence map›Paper›PMID 42251062›Full record

ArticleNature communications2026

Correlated singular flat bands on the surface pentagonal lattice of ferromagnetic CoS

Yuting Qian, Younsik Kim, Du Hyung Kim, Taekoo Oh, Yoonseok Hwang, Wonshik Kyung, Junseo Yoo, Sehoon Kim, Suyoung Lee, Hyunjee Song and 8 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors.

Yuting Qian *Department of Physics and Astronomy, Seoul National University, Seoul, Korea.
Younsik Kim *Department of Physics and Astronomy, Seoul National University, Seoul, Korea.ORCID http://orcid.org/0009-0005-7928-9322
Du Hyung Kim *Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea.
Taekoo OhDepartment of Physics and Origin of Matter and Evolution of Galaxies (OMEG) Institute, Soongsil University, Seoul, Korea.ORCID http://orcid.org/0000-0001-7481-7556
Yoonseok HwangDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.ORCID http://orcid.org/0000-0002-8784-7495
Wonshik KyungDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.ORCID http://orcid.org/0000-0001-8750-5471
Junseo YooDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.ORCID http://orcid.org/0009-0005-8431-6348
Sehoon KimDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.
Suyoung LeeDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.ORCID http://orcid.org/0009-0003-9520-9535
Hyunjee SongDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.
Mi Kyung KimDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea.
Cheng-Maw ChengNational Synchrotron Radiation Research Center, Hsinchu, Taiwan.ORCID http://orcid.org/0000-0002-7569-6757
Min-Seok KimDepartment of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea.ORCID http://orcid.org/0009-0007-7253-2953
Se Young ParkDepartment of Physics and Origin of Matter and Evolution of Galaxies (OMEG) Institute, Soongsil University, Seoul, Korea.
Changming YueState Key Laboratory of Quantum Functional Materials, Department of Physics, and Guangdong Basic Research Center of Excellence for Quantum Science, Southern University of Science and Technology (SUSTech), Shenzhen, China.
Jungpil SeoDepartment of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea. jseo@dgist.ac.kr.ORCID http://orcid.org/0000-0002-0442-288X
Changyoung KimDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea. changyoung@snu.ac.kr.ORCID http://orcid.org/0000-0003-0555-2341
Bohm-Jung YangDepartment of Physics and Astronomy, Seoul National University, Seoul, Korea. bjyang@snu.ac.kr.ORCID http://orcid.org/0000-0001-5888-7546

Funding

National Research Foundation of Korea (NRF) RS-2023-00258359National Research Foundation of Korea (NRF) RS-2025-00562579
6 · The paper itself

Abstract

Flat bands have been proposed in various geometrically frustrated lattices, yet their experimental realization has been limited only to the two-dimensional (2D) kagome and three-dimensional (3D) pyrochlore lattices. While synthesizing bulk crystals with desired lattice geometry is generally challenging, the surfaces of 3D bulk materials sometimes naturally host 2D lattice structures hardly achievable in 2D bulk crystals. Thus, the electrons localized on such 2D surfaces can be a new platform for exotic flat bands residing on the unexplored lattice geometry. Here, we report the first experimental observation of singular flat bands with band crossings in the 2D pentagonal lattice on the surface of the 3D ferromagnetic topological semimetal CoS

Identifiers

PMID42251062
PMCPMC13402598

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.