Evidence map›Paper›PMID 38871728›Full record

ArticleNature communications2024

Strongly coupled magneto-exciton condensates in large-angle twisted double bilayer graphene.

Qingxin Li, Yiwei Chen, LingNan Wei, Hong Chen, Yan Huang, Yujian Zhu, Wang Zhu, Dongdong An, Junwei Song, Qikang Gan and 8 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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.

Qingxin Li *National Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Yiwei Chen *National Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
LingNan Wei *National Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Hong Chen *National Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Yan HuangNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Yujian ZhuNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Wang ZhuNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Dongdong AnNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Junwei SongNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Qikang GanNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Qi ZhangNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
Kenji WatanabeResearch Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan.ORCID http://orcid.org/0000-0003-3701-8119
Takashi TaniguchiResearch Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan.ORCID http://orcid.org/0000-0002-1467-3105
Xiaoyang ShiEnvironmental and Sustainable Engineering, College of Engineering and Applied Science, University at Albany, Albany, NY, 12222, USA. xshi7@albany.edu.
Kostya S NovoselovInstitute for Functional Intelligent Materials, National University of Singapore, Building S9, 4 Science Drive 2, Singapore, 117544, Singapore.ORCID http://orcid.org/0000-0003-4972-5371
Rui WangNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China. rwang89@nju.edu.cn.
Geliang YuNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China. yugeliang@nju.edu.cn.ORCID http://orcid.org/0000-0002-0169-7781
Lei WangNational Laboratory of Solid-State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China. leiwang@nju.edu.cn.ORCID http://orcid.org/0000-0002-1919-9107

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Excitons, pairs of electrons and holes, undergo a Bose-Einstein condensation at low temperatures. An important platform to study excitons is double-layer two-dimensional electron gases, with two parallel planes of electrons and holes separated by a thin insulating layer. Lowering this separation (d) strengthens the exciton binding energy, however, leads to the undesired interlayer tunneling, resulting in annihilation of excitons. Here, we report the observation of a sequences of robust exciton condensates (ECs) in double bilayer graphene twisted to ~ 10° with no insulating mid-layer. The large momentum mismatch between two graphene layers suppresses interlayer tunneling, reaching a d ~ 0.334 nm. Measuring the bulk and edge transport, we find incompressible states corresponding to ECs when both layers are in half-filled N = 0, 1 Landau levels (LLs). Theoretical calculations suggest that the low-energy charged excitation of ECs can be meron-antimeron or particle-hole pair, which relies on both LL index and carrier type. Our results establish a novel platform with extreme coupling strength for studying quantum bosonic phase.

Identifiers

PMID38871728
PMCPMC11176383

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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.