Moiré heterostructures as a condensed-matter quantum simulator
Dante M. Kennes,Dante M. Kennes,Martin Claassen,Lede Xian,Antoine Georges,Andrew J. Millis,James Hone,Cory Dean,Dimitri Basov,Abhay Pasupathy,Angel Rubio +10 more
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In this article, the authors explore the idea of adopting twisted van der Waals heterostructures as a quantum simulation platform that enables the study of strongly correlated physics and topology in quantum materials.Abstract:
Twisted van der Waals heterostructures have latterly received prominent attention for their many remarkable experimental properties and the promise that they hold for realizing elusive states of matter in the laboratory We propose that these systems can, in fact, be used as a robust quantum simulation platform that enables the study of strongly correlated physics and topology in quantum materials Among the features that make these materials a versatile toolbox are the tunability of their properties through readily accessible external parameters such as gating, straining, packing and twist angle; the feasibility to realize and control a large number of fundamental many-body quantum models relevant in the field of condensed-matter physics; and finally, the availability of experimental readout protocols that directly map their rich phase diagrams in and out of equilibrium This general framework makes it possible to robustly realize and functionalize new phases of matter in a modular fashion, thus broadening the landscape of accessible physics and holding promise for future technological applications Moire heterostructures have latterly captured the attention of condensed-matter physicists This Review Article explores the idea of adopting them as a quantum simulation platform that enables the study of strongly correlated physics and topology in quantum materialsread more
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References
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Evidence for moiré excitons in van der Waals heterostructures
Kha Tran,Galan Moody,Fengcheng Wu,Xiaobo Lu,Junho Choi,Kyounghwan Kim,Amritesh Rai,Daniel A. Sanchez,Jiamin Quan,Akshay Singh,Akshay Singh,Jacob Embley,André Zepeda,Marshall Campbell,Travis M. Autry,Takashi Taniguchi,Kenji Watanabe,Nanshu Lu,Sanjay K. Banerjee,Kevin L. Silverman,Suenne Kim,Emanuel Tutuc,Li Yang,Allan H. MacDonald,Xiaoqin Li +24 more
TL;DR: In this paper, multiple interlayer exciton resonances with either positive or negative circularly polarized emission were observed in a molybdenum diselenide/tungsten diselinide (MoSe2/WSe2) heterobilayer with a small twist angle.
Journal ArticleDOI
Superconductors, orbital magnets and correlated states in magic-angle bilayer graphene
Xiaobo Lu,Petr Stepanov,Wei Yang,Ming Xie,Mohammed Ali Aamir,Ipsita Das,C. Urgell,Kenji Watanabe,Takashi Taniguchi,Guangyu Zhang,Adrian Bachtold,Allan H. MacDonald,Dmitri K. Efetov +12 more
TL;DR: In this paper, the authors report the fabrication of magic-angle twisted bilayer graphene devices with highly uniform twist angles, which enables the observation of new superconducting domes, orbital magnets and Chern insulating states.
Journal ArticleDOI
Spin liquid state in an organic Mott insulator with a triangular lattice.
Yasuhiro Shimizu,Yasuhiro Shimizu,Kazuya Miyagawa,Kazushi Kanoda,Mitsuhiko Maesato,Gunzi Saito +5 more
TL;DR: 1H NMR and static susceptibility measurements have been performed in an organic Mott insulator with a nearly isotropic triangular lattice and suggest that a quantum spin liquid state is realized in the close proximity of the superconducting state appearing under pressure.
Journal ArticleDOI
Ising pairing in superconducting NbSe2 atomic layers
Xiaoxiang Xi,Zefang Wang,Weiwei Zhao,Ju-Hyun Park,Kam Tuen Law,Helmuth Berger,László Forró,Jie Shan,Kin Fai Mak +8 more
TL;DR: In this article, the superconducting properties of NbSe2 as it approaches the monolayer limit are investigated by means of magnetotransport measurements, uncovering evidence of spin-momentum locking.
Journal ArticleDOI
Signatures of moiré-trapped valley excitons in MoSe 2 /WSe 2 heterobilayers
Kyle L. Seyler,Pasqual Rivera,Hongyi Yu,Nathan P. Wilson,Essance Ray,David Mandrus,David Mandrus,Jiaqiang Yan,Jiaqiang Yan,Wang Yao,Xiaodong Xu +10 more
TL;DR: Results suggest that the origin of the observed effects is interlayer excitons trapped in a smooth moiré potential with inherited valley-contrasting physics, and presents opportunities to control two-dimensional moirÉ optics through variation of the twist angle.