Observation of moiré excitons in WSe2/WS2 heterostructure superlattices

Jin, Chenhao; Regan, Emma C.; Yan, Aiming; Iqbal Bakti Utama, M.; Wang, Danqing; Zhao, Sihan; Qin, Ying; Yang, Sijie; Zheng, Zhiren; Shi, Shenyang; Watanabe, Kenji; Taniguchi, Takashi; Tongay, Sefaattin; Zettl, Alex; Wang, Feng

doi:10.1038/s41586-019-0976-y

Observation of moiré excitons in WSe₂/WS₂ heterostructure superlattices

Journal Article · Sun Feb 24 23:00:00 EST 2019 · Nature (London)

DOI:https://doi.org/10.1038/s41586-019-0976-y· OSTI ID:1571978

Jin, Chenhao ^[1]; Regan, Emma C. ^[2]; Yan, Aiming ^[3]; Iqbal Bakti Utama, M. ^[4]; Wang, Danqing ^[2]; Zhao, Sihan ^[1]; Qin, Ying ^[5]; Yang, Sijie ^[5]; Zheng, Zhiren ^[1]; Shi, Shenyang ^[6]; Watanabe, Kenji ^[7]; Taniguchi, Takashi ^[7]; Tongay, Sefaattin ^[5]; Zettl, Alex ^[8]; Wang, Feng ^[8]

Univ. of California, Berkeley, CA (United States). Dept. of Physics
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Graduate Group in Applied Science and Technology
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
Arizona State Univ., Tempe, AZ (United States). School for Engineering of Matter, Transport and Energy
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Fudan Univ., Shanghai (China). Dept. of Physics
National Inst. for Materials Science, Tsukuba (Japan)
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Kavli Energy NanoSciences Inst. at Univ. of California Berkeley and Lawrence Berkeley National Lab., Berkeley, CA (United States)

Moiré superlattices enable the generation of new quantum phenomena in two-dimensional heterostructures, in which the interactions between the atomically thin layers qualitatively change the electronic band structure of the superlattice. For example, mini-Dirac points, tunable Mott insulator states and the Hofstadter butterfly pattern can emerge in different types of graphene/boron nitride moiré superlattices, whereas correlated insulating states and superconductivity have been reported in twisted bilayer graphene moiré superlattices. In addition to their pronounced effects on single-particle states, moiré superlattices have recently been predicted to host excited states such as moiré exciton bands. Here we report the observation of moiré superlattice exciton states in tungsten diselenide/tungsten disulfide (WSe₂/WS₂) heterostructures in which the layers are closely aligned. These moiré exciton states manifest as multiple emergent peaks around the original WSe₂ A exciton resonance in the absorption spectra, and they exhibit gate dependences that are distinct from that of the A exciton in WSe₂ monolayers and in WSe₂/WS₂ heterostructures with large twist angles. These phenomena can be described by a theoretical model in which the periodic moiré potential is much stronger than the exciton kinetic energy and generates multiple flat exciton minibands. The moiré exciton bands provide an attractive platform from which to explore and control excited states of matter, such as topological excitons and a correlated exciton Hubbard model, in transition-metal dichalcogenides.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; USDOD

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1571978

Journal Information:: Nature (London), Journal Name: Nature (London) Journal Issue: 7746 Vol. 567; ISSN 0028-0836

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

References (38)

Crystal structures of tungsten disulfide and diselenide Schutte, W. J.; De Boer, J. L.; Jellinek, F. Journal of Solid State Chemistry, Vol. 70, Issue 2 https://doi.org/10.1016/0022-4596(87)90057-0	journal	October 1987
Quantum-Confined Electronic States Arising from the Moiré Pattern of MoS ₂ –WSe ₂ Heterobilayers Pan, Yi; Fölsch, Stefan; Nie, Yifan Nano Letters, Vol. 18, Issue 3 https://doi.org/10.1021/acs.nanolett.7b05125	journal	February 2018
Interlayer Coupling in Twisted WSe ₂ /WS ₂ Bilayer Heterostructures Revealed by Optical Spectroscopy Wang, Kai; Huang, Bing; Tian, Mengkun ACS Nano, Vol. 10, Issue 7 https://doi.org/10.1021/acsnano.6b01486	journal	June 2016
Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms Greiner, Markus; Mandel, Olaf; Esslinger, Tilman Nature, Vol. 415, Issue 6867 https://doi.org/10.1038/415039a	journal	January 2002
Hofstadter’s butterfly and the fractal quantum Hall effect in moiré superlattices Dean, C. R.; Wang, L.; Maher, P. Nature, Vol. 497, Issue 7451 https://doi.org/10.1038/nature12186	journal	May 2013
Cloning of Dirac fermions in graphene superlattices Ponomarenko, L. A.; Gorbachev, R. V.; Yu, G. L. Nature, Vol. 497, Issue 7451 https://doi.org/10.1038/nature12187	journal	May 2013
Probing excitonic dark states in single-layer tungsten disulphide Ye, Ziliang; Cao, Ting; O’Brien, Kevin Nature, Vol. 513, Issue 7517 https://doi.org/10.1038/nature13734	journal	August 2014
Correlated insulator behaviour at half-filling in magic-angle graphene superlattices Cao, Yuan; Fatemi, Valla; Demir, Ahmet Nature, Vol. 556, Issue 7699 https://doi.org/10.1038/nature26154	journal	March 2018
Unconventional superconductivity in magic-angle graphene superlattices Cao, Yuan; Fatemi, Valla; Fang, Shiang Nature, Vol. 556, Issue 7699 https://doi.org/10.1038/nature26160	journal	March 2018
Coulomb engineering of the bandgap and excitons in two-dimensional materials Raja, Archana; Chaves, Andrey; Yu, Jaeeun Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms15251	journal	May 2017
Dirac cones and Dirac saddle points of bright excitons in monolayer transition metal dichalcogenides Yu, Hongyi; Liu, Gui-Bin; Gong, Pu Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms4876	journal	May 2014
Tightly bound trions in monolayer MoS2 Mak, Kin Fai; He, Keliang; Lee, Changgu Nature Materials, Vol. 12, Issue 3 https://doi.org/10.1038/nmat3505	journal	December 2012
Ultrafast charge transfer in atomically thin MoS2/WS2 heterostructures Hong, Xiaoping; Kim, Jonghwan; Shi, Su-Fei Nature Nanotechnology, Vol. 9, Issue 9 https://doi.org/10.1038/nnano.2014.167	journal	August 2014
Gate-dependent pseudospin mixing in graphene/boron nitride moiré superlattices Shi, Zhiwen; Jin, Chenhao; Yang, Wei Nature Physics, Vol. 10, Issue 10 https://doi.org/10.1038/nphys3075	journal	August 2014
Tuning layer-hybridized moiré excitons by the quantum-confined Stark effect Tang, Yanhao; Gu, Jie; Liu, Song Nature Nanotechnology, Vol. 16, Issue 1 https://doi.org/10.1038/s41565-020-00783-2	journal	November 2020
Isospin Pomeranchuk effect in twisted bilayer graphene Saito, Yu; Yang, Fangyuan; Ge, Jingyuan Nature, Vol. 592, Issue 7853 https://doi.org/10.1038/s41586-021-03409-2	journal	April 2021
Band offsets and heterostructures of two-dimensional semiconductors Kang, Jun; Tongay, Sefaattin; Zhou, Jian Applied Physics Letters, Vol. 102, Issue 1 https://doi.org/10.1063/1.4774090	journal	January 2013
Topological Bloch bands in graphene superlattices Song, Justin C. W.; Samutpraphoot, Polnop; Levitov, Leonid S. Proceedings of the National Academy of Sciences, Vol. 112, Issue 35 https://doi.org/10.1073/pnas.1424760112	journal	August 2015
Boson localization and the superfluid-insulator transition Fisher, Matthew P. A.; Weichman, Peter B.; Grinstein, G. Physical Review B, Vol. 40, Issue 1 https://doi.org/10.1103/PhysRevB.40.546	journal	July 1989
Generic miniband structure of graphene on a hexagonal substrate Wallbank, J. R.; Patel, A. A.; Mucha-Kruczyński, M. Physical Review B, Vol. 87, Issue 24 https://doi.org/10.1103/PhysRevB.87.245408	journal	June 2013
Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers Wu, Fengcheng; Lovorn, Timothy; MacDonald, A. H. Physical Review B, Vol. 97, Issue 3 https://doi.org/10.1103/PhysRevB.97.035306	journal	January 2018
Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS 2 Chernikov, Alexey; Berkelbach, Timothy C.; Hill, Heather M. Physical Review Letters, Vol. 113, Issue 7 https://doi.org/10.1103/PhysRevLett.113.076802	journal	August 2014
Topological Exciton Bands in Moiré Heterojunctions Wu, Fengcheng; Lovorn, Timothy; MacDonald, A. H. Physical Review Letters, Vol. 118, Issue 14 https://doi.org/10.1103/PhysRevLett.118.147401	journal	April 2017
Interactions between Individual Carbon Nanotubes Studied by Rayleigh Scattering Spectroscopy Wang, Feng; Sfeir, Matthew Y.; Huang, Limin Physical Review Letters, Vol. 96, Issue 16 https://doi.org/10.1103/PhysRevLett.96.167401	journal	April 2006
Interlayer couplings, Moiré patterns, and 2D electronic superlattices in MoS ₂ /WSe ₂ hetero-bilayers Zhang, Chendong; Chuu, Chih-Piao; Ren, Xibiao Science Advances, Vol. 3, Issue 1 https://doi.org/10.1126/sciadv.1601459	journal	January 2017
Moiré excitons: From programmable quantum emitter arrays to spin-orbit–coupled artificial lattices Yu, Hongyi; Liu, Gui-Bin; Tang, Jianju Science Advances, Vol. 3, Issue 11 https://doi.org/10.1126/sciadv.1701696	journal	November 2017
Massive Dirac Fermions and Hofstadter Butterfly in a van der Waals Heterostructure Hunt, B.; Sanchez-Yamagishi, J. D.; Young, A. F. Science, Vol. 340, Issue 6139 https://doi.org/10.1126/science.1237240	journal	May 2013
One-Dimensional Electrical Contact to a Two-Dimensional Material Wang, L.; Meric, I.; Huang, P. Y. Science, Vol. 342, Issue 6158 https://doi.org/10.1126/science.1244358	journal	October 2013
Detecting topological currents in graphene superlattices Gorbachev, R. V.; Song, J. C. W.; Yu, G. L. Science, Vol. 346, Issue 6208 https://doi.org/10.1126/science.1254966	journal	September 2014
Ballistic miniband conduction in a graphene superlattice Lee, M.; Wallbank, J. R.; Gallagher, P. Science, Vol. 353, Issue 6307 https://doi.org/10.1126/science.aaf1095	journal	September 2016
Observation of fractional Chern insulators in a van der Waals heterostructure Spanton, Eric M.; Zibrov, Alexander A.; Zhou, Haoxin Science, Vol. 360, Issue 6384 https://doi.org/10.1126/science.aan8458	journal	March 2018
Imaging of pure spin-valley diffusion current in WS ₂ -WSe ₂ heterostructures Jin, Chenhao; Kim, Jonghwan; Utama, M. Iqbal Bakti Science, Vol. 360, Issue 6391 https://doi.org/10.1126/science.aao3503	journal	May 2018
Cloning of Dirac fermions in graphene superlattices Ponomarenko, L. A.; Gorbachev, R. V.; Yu, G. L. arXiv https://doi.org/10.48550/arxiv.1212.5012	text	January 2012
Probing Excitonic Dark States in Single-layer Tungsten Disulfide Ye, Ziliang; Cao, Ting; O'Brien, Kevin arXiv https://doi.org/10.48550/arxiv.1403.5568	text	January 2014
Gate-dependent Pseudospin Mixing in Graphene/Boron Nitride Moire Superlattices Shi, Zhiwen; Jin, Chenhao; Yang, Wei arXiv https://doi.org/10.48550/arxiv.1405.2032	text	January 2014
Observation of fractional Chern insulators in a van der Waals heterostructure Spanton, Eric M.; Zibrov, Alexander A.; Zhou, Haoxin arXiv https://doi.org/10.48550/arxiv.1706.06116	text	January 2017
Coulomb engineering of the bandgap and excitons in two-dimensional materials Chernikov, Alexey; Raja, Archana; Chaves, Andrey Universität Regensburg https://doi.org/10.5283/epub.35591	text	January 2017
Coulomb engineering of the bandgap and excitons in two-dimensional materials Raja, Archana; Chaves, Andrey; Yu, Jaeeun Universität Regensburg https://doi.org/10.5283/epub.40514	text	January 2017

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