Thermal transport mapping in twisted double bilayer graphene
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| author | Mech, Roop Kumar Canetta, Alessandra Huang, Yubin Gonzalez-Munoz, Sergio Agarwal, Khushboo de Crombrugghe, Pauline Hong, Yuanzhuo Mohapatra, Sambit Watanabe, Kenji Taniguchi, Takashi Nysten, Bernard Hackens, Benoît Ribeiro-Palau, Rebeca Kolosov, Oleg Spèce, Jean Gehring, Pascal |
| author_facet | Mech, Roop Kumar Canetta, Alessandra Huang, Yubin Gonzalez-Munoz, Sergio Agarwal, Khushboo de Crombrugghe, Pauline Hong, Yuanzhuo Mohapatra, Sambit Watanabe, Kenji Taniguchi, Takashi Nysten, Bernard Hackens, Benoît Ribeiro-Palau, Rebeca Kolosov, Oleg Spèce, Jean Gehring, Pascal |
| contents | Two-dimensional (2D) materials have attracted significant interest due to their tunable physical properties when stacked into homo- and hetero-structures. Twisting adjacent layers introduces moiré patterns that strongly influence the material electronic and thermal behavior. In twisted graphene systems, the twist angle critically alters phonon transport, leading to reduced thermal conductivity compared to Bernal-stacked configurations. However, experimental investigations into thermal transport in twisted structures remain limited. Here, we study the local thermal properties of twisted double bilayer graphene (TDBG) using Scanning Thermal Microscopy (SThM). We find an increase in thermal resistance of $0.3 \pm 0.1 \times 10^6 KW^{-1}$ compared to untwisted bilayers, attributed to changes in both intrinsic thermal conductivity and the tip-sample interface. These results, supported by analytical modeling, provide new insight into thermal transport mechanisms in twisted 2D systems and offer a pathway toward thermal engineering in twistronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_12957 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Thermal transport mapping in twisted double bilayer graphene Mech, Roop Kumar Canetta, Alessandra Huang, Yubin Gonzalez-Munoz, Sergio Agarwal, Khushboo de Crombrugghe, Pauline Hong, Yuanzhuo Mohapatra, Sambit Watanabe, Kenji Taniguchi, Takashi Nysten, Bernard Hackens, Benoît Ribeiro-Palau, Rebeca Kolosov, Oleg Spèce, Jean Gehring, Pascal Mesoscale and Nanoscale Physics Two-dimensional (2D) materials have attracted significant interest due to their tunable physical properties when stacked into homo- and hetero-structures. Twisting adjacent layers introduces moiré patterns that strongly influence the material electronic and thermal behavior. In twisted graphene systems, the twist angle critically alters phonon transport, leading to reduced thermal conductivity compared to Bernal-stacked configurations. However, experimental investigations into thermal transport in twisted structures remain limited. Here, we study the local thermal properties of twisted double bilayer graphene (TDBG) using Scanning Thermal Microscopy (SThM). We find an increase in thermal resistance of $0.3 \pm 0.1 \times 10^6 KW^{-1}$ compared to untwisted bilayers, attributed to changes in both intrinsic thermal conductivity and the tip-sample interface. These results, supported by analytical modeling, provide new insight into thermal transport mechanisms in twisted 2D systems and offer a pathway toward thermal engineering in twistronic devices. |
| title | Thermal transport mapping in twisted double bilayer graphene |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.12957 |