Strange metallicity of moiré twisted bilayer graphene
Recent measurements in several different laboratories report the observation of an approximately linear-in-temperature resistivity with a large twist-angle-dependent slope (or temperature coefficient) in moiré twisted bilayer graphene down to a few K and sometimes to much lower temperatures. In this...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2022-07-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.033061 |
| _version_ | 1797210709696708608 |
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| author | Sankar Das Sarma Fengcheng Wu |
| author_facet | Sankar Das Sarma Fengcheng Wu |
| author_sort | Sankar Das Sarma |
| collection | DOAJ |
| description | Recent measurements in several different laboratories report the observation of an approximately linear-in-temperature resistivity with a large twist-angle-dependent slope (or temperature coefficient) in moiré twisted bilayer graphene down to a few K and sometimes to much lower temperatures. In this paper, we theoretically discuss this “strange metal” linear-in-temperature transport behavior from the perspective of resistive scattering by acoustic phonons, emphasizing the aspects of the transport data, which are and which are not consistent with the phonon scattering mechanism. An extensive theoretical comparison with a recent experiment [A. Jaoui et al., Nat. Phys. 18, 633 (2022)1745-247310.1038/s41567-022-01556-5] is the central new aspect of this work. |
| first_indexed | 2024-04-24T10:14:54Z |
| format | Article |
| id | doaj.art-2b991b7264fc482792bf3543b810a70d |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:14:54Z |
| publishDate | 2022-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-2b991b7264fc482792bf3543b810a70d2024-04-12T17:23:00ZengAmerican Physical SocietyPhysical Review Research2643-15642022-07-014303306110.1103/PhysRevResearch.4.033061Strange metallicity of moiré twisted bilayer grapheneSankar Das SarmaFengcheng WuRecent measurements in several different laboratories report the observation of an approximately linear-in-temperature resistivity with a large twist-angle-dependent slope (or temperature coefficient) in moiré twisted bilayer graphene down to a few K and sometimes to much lower temperatures. In this paper, we theoretically discuss this “strange metal” linear-in-temperature transport behavior from the perspective of resistive scattering by acoustic phonons, emphasizing the aspects of the transport data, which are and which are not consistent with the phonon scattering mechanism. An extensive theoretical comparison with a recent experiment [A. Jaoui et al., Nat. Phys. 18, 633 (2022)1745-247310.1038/s41567-022-01556-5] is the central new aspect of this work.http://doi.org/10.1103/PhysRevResearch.4.033061 |
| spellingShingle | Sankar Das Sarma Fengcheng Wu Strange metallicity of moiré twisted bilayer graphene Physical Review Research |
| title | Strange metallicity of moiré twisted bilayer graphene |
| title_full | Strange metallicity of moiré twisted bilayer graphene |
| title_fullStr | Strange metallicity of moiré twisted bilayer graphene |
| title_full_unstemmed | Strange metallicity of moiré twisted bilayer graphene |
| title_short | Strange metallicity of moiré twisted bilayer graphene |
| title_sort | strange metallicity of moire twisted bilayer graphene |
| url | http://doi.org/10.1103/PhysRevResearch.4.033061 |
| work_keys_str_mv | AT sankardassarma strangemetallicityofmoiretwistedbilayergraphene AT fengchengwu strangemetallicityofmoiretwistedbilayergraphene |