Tuning moiré excitons and correlated electronic states through layer degree of freedom

Chen, Dongxue; Lian, Zhen; Huang, Xiong; Su, Ying; Rashetnia, Mina; Yan, Li; Blei, Mark; Taniguchi, Takashi; Watanabe, Kenji; Tongay, Sefaattin; Wang, Zenghui; Zhang, Chuanwei; Cui, Yong-Tao; Shi, Su-Fei

doi:10.1038/s41467-022-32493-9

Title: Tuning moiré excitons and correlated electronic states through layer degree of freedom

Abstract

Moiré coupling in transition metal dichalcogenides (TMDCs) superlattices introduces flat minibands that enable strong electronic correlation and fascinating correlated states, and it also modifies the strong Coulomb-interaction-driven excitons and gives rise to moiré excitons. Here, we introduce the layer degree of freedom to the WSe₂/WS₂ moiré superlattice by changing WSe₂ from monolayer to bilayer and trilayer. We observe systematic changes of optical spectra of the moiré excitons, which directly confirm the highly interfacial nature of moiré coupling at the WSe₂/WS₂ interface. In addition, the energy resonances of moiré excitons are strongly modified, with their separation significantly increased in multilayer WSe₂/monolayer WS2 moiré superlattice. The additional WSe₂ layers also modulate the strong electronic correlation strength, evidenced by the reduced Mott transition temperature with added WSe₂ layer(s). The layer dependence of both moiré excitons and correlated electronic states can be well described by our theoretical model. Our study presents a new method to tune the strong electronic correlation and moiré exciton bands in the TMDCs moiré superlattices, ushering in an exciting platform to engineer quantum phenomena stemming from strong correlation and Coulomb interaction.

Authors:

^[1]; Lian, Zhen ^[2];

^[3];

^[4]; Rashetnia, Mina ^[3]; Yan, Li ^[2]; Blei, Mark ^[5];

^[6];

^[5];

^[7];

^[4];

^[3];

^[2]

University of Electronic Science and Technology of China, Chengdu (China); Rensselaer Polytechnic Institute, Troy, NY (United States)
Rensselaer Polytechnic Institute, Troy, NY (United States)
University of California, Riverside, CA (United States)
University of Texas at Dallas, TX (United States)
Arizona State University, Tempe, AZ (United States)
National Institute for Materials Science, Tsukuba (Japan)
University of Electronic Science and Technology of China, Chengdu (China)

Publication Date:: Tue Aug 16 00:00:00 EDT 2022

Research Org.:: Florida State Univ., Tallahassee, FL (United States); Arizona State Univ., Tempe, AZ (United States)

Sponsoring Org.:: USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR); NYSTAR; National Science Foundation (NSF); Army Research Office (ARO); National Natural Science Foundation of China (NSFC); Japan Society for the Promotion of Science (JSPS)

OSTI Identifier:: 1904628

Grant/Contract Number:: FG02-07ER46451; SC0020653; FA9550-20-1-0179; C150117; DMR-1945420; DMR-2104902; FA9550-18-1-0312; DMR- 2104805; PHY-2110212; PHY-1806227; W911NF17-1-0128; FA9550-20-1-0220; 62004032; DMR-1904716; DMR-1838443; CMMI-1933214; JPMXP0112101001; DMR-1644779

Resource Type:: Accepted Manuscript

Journal Name:: Nature Communications

Additional Journal Information:: Journal Volume: 13; Journal Issue: 1; Journal ID: ISSN 2041-1723

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 42 ENGINEERING; electronic properties and materials; two-dimensional materials

Citation Formats


                    Chen, Dongxue, Lian, Zhen, Huang, Xiong, Su, Ying, Rashetnia, Mina, Yan, Li, Blei, Mark, Taniguchi, Takashi, Watanabe, Kenji, Tongay, Sefaattin, Wang, Zenghui, Zhang, Chuanwei, Cui, Yong-Tao, and Shi, Su-Fei. Tuning moiré excitons and correlated electronic states through layer degree of freedom.  United States: N. p., 2022. 
Web.  doi:10.1038/s41467-022-32493-9.

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                    Chen, Dongxue, Lian, Zhen, Huang, Xiong, Su, Ying, Rashetnia, Mina, Yan, Li, Blei, Mark, Taniguchi, Takashi, Watanabe, Kenji, Tongay, Sefaattin, Wang, Zenghui, Zhang, Chuanwei, Cui, Yong-Tao, & Shi, Su-Fei. Tuning moiré excitons and correlated electronic states through layer degree of freedom.  United States.  https://doi.org/10.1038/s41467-022-32493-9

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                    Chen, Dongxue, Lian, Zhen, Huang, Xiong, Su, Ying, Rashetnia, Mina, Yan, Li, Blei, Mark, Taniguchi, Takashi, Watanabe, Kenji, Tongay, Sefaattin, Wang, Zenghui, Zhang, Chuanwei, Cui, Yong-Tao, and Shi, Su-Fei. Tue .  
"Tuning moiré excitons and correlated electronic states through layer degree of freedom".  United States.  https://doi.org/10.1038/s41467-022-32493-9.  https://www.osti.gov/servlets/purl/1904628.

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@article{osti_1904628,

  title        = {Tuning moiré excitons and correlated electronic states through layer degree of freedom},

  author       = {Chen, Dongxue and Lian, Zhen and Huang, Xiong and Su, Ying and Rashetnia, Mina and Yan, Li and Blei, Mark and Taniguchi, Takashi and Watanabe, Kenji and Tongay, Sefaattin and Wang, Zenghui and Zhang, Chuanwei and Cui, Yong-Tao and Shi, Su-Fei},

  abstractNote = {Moiré coupling in transition metal dichalcogenides (TMDCs) superlattices introduces flat minibands that enable strong electronic correlation and fascinating correlated states, and it also modifies the strong Coulomb-interaction-driven excitons and gives rise to moiré excitons. Here, we introduce the layer degree of freedom to the WSe2/WS2 moiré superlattice by changing WSe2 from monolayer to bilayer and trilayer. We observe systematic changes of optical spectra of the moiré excitons, which directly confirm the highly interfacial nature of moiré coupling at the WSe2/WS2 interface. In addition, the energy resonances of moiré excitons are strongly modified, with their separation significantly increased in multilayer WSe2/monolayer WS2 moiré superlattice. The additional WSe2 layers also modulate the strong electronic correlation strength, evidenced by the reduced Mott transition temperature with added WSe2 layer(s). The layer dependence of both moiré excitons and correlated electronic states can be well described by our theoretical model. Our study presents a new method to tune the strong electronic correlation and moiré exciton bands in the TMDCs moiré superlattices, ushering in an exciting platform to engineer quantum phenomena stemming from strong correlation and Coulomb interaction.},

  doi          = {10.1038/s41467-022-32493-9},

  journal      = {Nature Communications},

  number       = 1,

  volume       = 13,

  place        = {United States},

  year         = {Tue Aug 16 00:00:00 EDT 2022},

  month        = {Tue Aug 16 00:00:00 EDT 2022}

}

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Works referenced in this record:

Moiré excitons: From programmable quantum emitter arrays to spin-orbit–coupled artificial lattices
journal, November 2017

Yu, Hongyi; Liu, Gui-Bin; Tang, Jianju
Science Advances, Vol. 3, Issue 11
DOI: 10.1126/sciadv.1701696

Electrically tunable correlated and topological states in twisted monolayer–bilayer graphene
journal, October 2020

Chen, Shaowen; He, Minhao; Zhang, Ya-Hui
Nature Physics, Vol. 17, Issue 3
DOI: 10.1038/s41567-020-01062-6

Correlated electronic phases in twisted bilayer transition metal dichalcogenides
journal, June 2020

Wang, Lei; Shih, En-Min; Ghiotto, Augusto
Nature Materials, Vol. 19, Issue 8
DOI: 10.1038/s41563-020-0708-6

Unconventional superconductivity in magic-angle graphene superlattices
journal, March 2018

Cao, Yuan; Fatemi, Valla; Fang, Shiang
Nature, Vol. 556, Issue 7699
DOI: 10.1038/nature26160

Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
journal, March 2020

Regan, Emma C.; Wang, Danqing; Jin, Chenhao
Nature, Vol. 579, Issue 7799
DOI: 10.1038/s41586-020-2092-4

Intrinsic quantized anomalous Hall effect in a moiré heterostructure
journal, December 2019

Serlin, M.; Tschirhart, C. L.; Polshyn, H.
Science, Vol. 367, Issue 6480
DOI: 10.1126/science.aay5533

Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
journal, July 2019

Sharpe, Aaron L.; Fox, Eli J.; Barnard, Arthur W.
Science, Vol. 365, Issue 6453
DOI: 10.1126/science.aaw3780

Emerging Photoluminescence in Monolayer MoS₂
journal, April 2010

Splendiani, Andrea; Sun, Liang; Zhang, Yuanbo
Nano Letters, Vol. 10, Issue 4, p. 1271-1275
DOI: 10.1021/nl903868w

Nanoscale Conductivity Imaging of Correlated Electronic States in ${WSe}_{2} / {WS}_{2}$ Moiré Superlattices
journal, October 2020

Chu, Zhaodong; Regan, Emma C.; Ma, Xuejian
Physical Review Letters, Vol. 125, Issue 18
DOI: 10.1103/PhysRevLett.125.186803

Imaging moiré flat bands in three-dimensional reconstructed WSe2/WS2 superlattices
journal, February 2021

Li, Hongyuan; Li, Shaowei; Naik, Mit H.
Nature Materials, Vol. 20, Issue 7
DOI: 10.1038/s41563-021-00923-6

Evidence of a gate-tunable Mott insulator in a trilayer graphene moiré superlattice
journal, January 2019

Chen, Guorui; Jiang, Lili; Wu, Shuang
Nature Physics, Vol. 15, Issue 3
DOI: 10.1038/s41567-018-0387-2

Correlated insulating states at fractional fillings of the WS2/WSe2 moiré lattice
journal, February 2021

Huang, Xiong; Wang, Tianmeng; Miao, Shengnan
Nature Physics
DOI: 10.1038/s41567-021-01171-w

Simulation of Hubbard model physics in WSe2/WS2 moiré superlattices
journal, March 2020

Tang, Yanhao; Li, Lizhong; Li, Tingxin
Nature, Vol. 579, Issue 7799
DOI: 10.1038/s41586-020-2085-3

Correlated insulating states at fractional fillings of moiré superlattices
journal, November 2020

Xu, Yang; Liu, Song; Rhodes, Daniel A.
Nature, Vol. 587, Issue 7833
DOI: 10.1038/s41586-020-2868-6

Tunable correlated Chern insulator and ferromagnetism in a moiré superlattice
journal, March 2020

Chen, Guorui; Sharpe, Aaron L.; Fox, Eli J.
Nature, Vol. 579, Issue 7797
DOI: 10.1038/s41586-020-2049-7

Observation of moiré excitons in WSe2/WS2 heterostructure superlattices
journal, February 2019

Jin, Chenhao; Regan, Emma C.; Yan, Aiming
Nature, Vol. 567, Issue 7746
DOI: 10.1038/s41586-019-0976-y

Electrical switching of magnetic order in an orbital Chern insulator
journal, November 2020

Polshyn, H.; Zhu, J.; Kumar, M. A.
Nature, Vol. 588, Issue 7836
DOI: 10.1038/s41586-020-2963-8

Bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
journal, June 2021

Zhou, You; Sung, Jiho; Brutschea, Elise
Nature, Vol. 595, Issue 7865
DOI: 10.1038/s41586-021-03560-w

Exciton band structure of monolayer ${MoS}_{2}$
journal, February 2015

Wu, Fengcheng; Qu, Fanyao; MacDonald, A. H.
Physical Review B, Vol. 91, Issue 7
DOI: 10.1103/PhysRevB.91.075310

Strong interaction between interlayer excitons and correlated electrons in WSe2/WS2 moiré superlattice
journal, June 2021

Miao, Shengnan; Wang, Tianmeng; Huang, Xiong
Nature Communications, Vol. 12, Issue 1
DOI: 10.1038/s41467-021-23732-6

Tailoring excitonic states of van der Waals bilayers through stacking configuration, band alignment, and valley spin
journal, December 2019

Hsu, Wei-Ting; Lin, Bo-Han; Lu, Li-Syuan
Science Advances, Vol. 5, Issue 12
DOI: 10.1126/sciadv.aax7407

Moire bands in twisted double-layer graphene
journal, July 2011

Bistritzer, R.; MacDonald, A. H.
Proceedings of the National Academy of Sciences, Vol. 108, Issue 30
DOI: 10.1073/pnas.1108174108

Tunable spin-polarized correlated states in twisted double bilayer graphene
journal, July 2020

Liu, Xiaomeng; Hao, Zeyu; Khalaf, Eslam
Nature, Vol. 583, Issue 7815
DOI: 10.1038/s41586-020-2458-7

Correlated insulator behaviour at half-filling in magic-angle graphene superlattices
journal, March 2018

Cao, Yuan; Fatemi, Valla; Demir, Ahmet
Nature, Vol. 556, Issue 7699
DOI: 10.1038/nature26154

One-Dimensional Electrical Contact to a Two-Dimensional Material
journal, October 2013

Wang, L.; Meric, I.; Huang, P. Y.
Science, Vol. 342, Issue 6158
DOI: 10.1126/science.1244358

Optical Spectrum of ${MoS}_{2}$ : Many-Body Effects and Diversity of Exciton States
journal, November 2013

Qiu, Diana Y.; da Jornada, Felipe H.; Louie, Steven G.
Physical Review Letters, Vol. 111, Issue 21
DOI: 10.1103/PhysRevLett.111.216805

Probing excitonic dark states in single-layer tungsten disulphide
journal, August 2014

Ye, Ziliang; Cao, Ting; O’Brien, Kevin
Nature, Vol. 513, Issue 7517
DOI: 10.1038/nature13734

Atomically Thin ${MoS}_{2}$ A New Direct-Gap Semiconductor
journal, September 2010

Mak, Kin Fai; Lee, Changgu; Hone, James
Physical Review Letters, Vol. 105, Issue 13, Article No.136805
DOI: 10.1103/PhysRevLett.105.136805

Tunable van Hove singularities and correlated states in twisted monolayer–bilayer graphene
journal, February 2021

Xu, Shuigang; Al Ezzi, Mohammed M.; Balakrishnan, Nilanthy
Nature Physics, Vol. 17, Issue 5
DOI: 10.1038/s41567-021-01172-9

Spin–layer locking effects in optical orientation of exciton spin in bilayer WSe2
journal, January 2014

Jones, Aaron M.; Yu, Hongyi; Ross, Jason S.
Nature Physics, Vol. 10, Issue 2
DOI: 10.1038/nphys2848

Signatures of tunable superconductivity in a trilayer graphene moiré superlattice
journal, July 2019

Chen, Guorui; Sharpe, Aaron L.; Gallagher, Patrick
Nature, Vol. 572, Issue 7768
DOI: 10.1038/s41586-019-1393-y

Tunable correlated states and spin-polarized phases in twisted bilayer–bilayer graphene
journal, May 2020

Cao, Yuan; Rodan-Legrain, Daniel; Rubies-Bigorda, Oriol
Nature
DOI: 10.1038/s41586-020-2260-6

Correlated states in twisted double bilayer graphene
journal, March 2020

Shen, Cheng; Chu, Yanbang; Wu, QuanSheng
Nature Physics, Vol. 16, Issue 5
DOI: 10.1038/s41567-020-0825-9

Dirac cones and Dirac saddle points of bright excitons in monolayer transition metal dichalcogenides
journal, May 2014

Yu, Hongyi; Liu, Gui-Bin; Gong, Pu
Nature Communications, Vol. 5, Issue 1
DOI: 10.1038/ncomms4876

Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer ${WS}_{2}$
journal, August 2014

Chernikov, Alexey; Berkelbach, Timothy C.; Hill, Heather M.
Physical Review Letters, Vol. 113, Issue 7
DOI: 10.1103/PhysRevLett.113.076802

Topological Exciton Bands in Moiré Heterojunctions
journal, April 2017

Wu, Fengcheng; Lovorn, Timothy; MacDonald, A. H.
Physical Review Letters, Vol. 118, Issue 14
DOI: 10.1103/PhysRevLett.118.147401

Giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
journal, August 2014

Ugeda, Miguel M.; Bradley, Aaron J.; Shi, Su-Fei
Nature Materials, Vol. 13, Issue 12
DOI: 10.1038/nmat4061

Signatures of Wigner crystal of electrons in a monolayer semiconductor
journal, June 2021

Smoleński, Tomasz; Dolgirev, Pavel E.; Kuhlenkamp, Clemens
Nature, Vol. 595, Issue 7865
DOI: 10.1038/s41586-021-03590-4

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Title: Tuning moiré excitons and correlated electronic states through layer degree of freedom

Abstract

Citation Formats

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