Doping fingerprints of spin and lattice fluctuations in moiré superlattice 
systems

Witt, N.; Pizarro, J. M.; Berges, J.; Nomoto, T.; Arita, R.; Wehling, T. O.

doi:10.1103/PhysRevB.105.L241109

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学術論文

Doping fingerprints of spin and lattice fluctuations in moiré superlattice systems

MPS-Authors

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Pizarro, J. M.
Institute of Theoretical Physics, Bremen Center for Computational Materials Science, and MAPEX Center for Materials and Processes, University of Bremen;
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

https://doi.org/10.1103/PhysRevB.105.L241109
(出版社版)

https://arxiv.org/abs/2108.01121
(プレプリント)

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フルテキスト (公開)

PhysRevB.105.L241109.pdf
(出版社版), 2MB

付随資料 (公開)

twistFLEX_v2_SM.pdf
(付録資料), 6MB

引用

Witt, N., Pizarro, J. M., Berges, J., Nomoto, T., Arita, R., & Wehling, T. O. (2022). Doping fingerprints of spin and lattice fluctuations in moiré superlattice systems. Physical Review B, 105(24):. doi:10.1103/PhysRevB.105.L241109.

引用: https://hdl.handle.net/21.11116/0000-000A-9EAE-1

要旨

Twisted Van der Waals systems offer the unprecedented possibility to tune different states of correlated quantum matter with external noninvasive electrostatic doping. The nature of the superconducting order presents a recurring open question in this context. In this work, we assess quantitatively the case of spin-fluctuation-mediated pairing for Γ-valley twisted transition metal dichalcogenide homobilayers. We calculate self-consistently and dynamically the doping-dependent superconducting transition temperature T_c revealing a superconducting dome with a maximal T_c≈0.1–1K depending on twist angle. We compare our results with conventional phonon-mediated superconductivity, and we identify clear fingerprints in the doping dependence of T_c, which enable experiments to distinguish between different pairing mechanisms.