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  Competition of density waves and superconductivity in twisted tungsten diselenide

Klebl, L., Fischer, A., Classen, L., Scherer, M. M., & Kennes, D. M. (2023). Competition of density waves and superconductivity in twisted tungsten diselenide. Physical Review Research, 5(1): L012034. doi:10.1103/PhysRevResearch.5.L012034.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000A-3092-A Version Permalink: https://hdl.handle.net/21.11116/0000-000C-CCD2-1
Genre: Journal Article

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 Creators:
Klebl, L.1, Author
Fischer, A.1, Author
Classen, L.2, Author
Scherer, M. M.3, Author
Kennes, D. M.1, 4, 5, Author           
Affiliations:
1Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology, ou_persistent22              
2Max Planck Institute for Solid State Research, ou_persistent22              
3Institut für Theoretische Physik III, Ruhr-Universität Bochum, ou_persistent22              
4Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
5Center for Free-Electron Laser Science, ou_persistent22              

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 Abstract: Evidence for correlated insulating and superconducting phases around regions of high density of states was reported in the strongly spin-orbit coupled van der Waals material twisted tungsten diselenide (tWSe2). We investigate their origin and interplay by using a functional renormalization group approach that allows one to describe superconducting and spin/charge instabilities in an unbiased way. We map out the phase diagram as a function of filling and perpendicular electric field, and find that the moiré Hubbard model for tWSe2 features mixed-parity superconducting order parameters with s/f-wave and topological d/p-wave symmetry next to (incommensurate) density-wave states. Our work systematically characterizes competing interaction-driven phases in tWSe2 beyond mean-field approximations and provides guidance for experimental measurements by outlining the fingerprint of correlated states in interacting susceptibilities.

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Language(s): eng - English
 Dates: 2022-04-042023-02-272023-03-102023-03-01
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: arXiv: 2204.00648
DOI: 10.1103/PhysRevResearch.5.L012034
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Project name : We thank J. Beyer, J. Cano, J. Hauck, A. Leonhardt, A. Millis, A. Pasupathy, A. Schnyder, T. Schäfer, and J. Zang for useful discussions. We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under RTG 1995, within the Priority Program SPP 2244 “2DMP” and under Germany's Excellence Strategy–Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1-390534769. We acknowledge computational resources provided by the Max Planck Computing and Data Facility and RWTH Aachen University under Project No. rwth0716. This work was supported by the Max Planck–New York City Center for Nonequilibrium Quantum Phenomena. M.M.S. acknowledges support through the DFG Heisenberg program (Project ID 452976698) and SFB 1238 (Project No. C02, Project ID 277146847).
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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 5 (1) Sequence Number: L012034 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564