دورية أكاديمية
Superconductivity induced by gate-driven hydrogen intercalation in the charge-density-wave compound 1T-TiSe2
| العنوان: | Superconductivity induced by gate-driven hydrogen intercalation in the charge-density-wave compound 1T-TiSe2 |
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| المؤلفون: | Erik Piatti, Giacomo Prando, Martina Meinero, Cesare Tresca, Marina Putti, Stefano Roddaro, Gianrico Lamura, Toni Shiroka, Pietro Carretta, Gianni Profeta, Dario Daghero, Renato S. Gonnelli |
| المصدر: | Communications Physics, Vol 6, Iss 1, Pp 1-12 (2023) |
| بيانات النشر: | Nature Portfolio, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Astrophysics LCC:Physics |
| مصطلحات موضوعية: | Astrophysics, QB460-466, Physics, QC1-999 |
| الوصف: | Abstract Hydrogen (H) plays a key role in the near-to-room temperature superconductivity of hydrides at megabar pressures. This suggests that H doping could have similar effects on the electronic and phononic spectra of materials at ambient pressure as well. Here, we demonstrate the non-volatile control of the electronic ground state of titanium diselenide (1T-TiSe2) via ionic liquid gating-driven H intercalation. This protonation induces a superconducting phase, observed together with a charge-density wave through most of the phase diagram, with nearly doping-independent transition temperatures. The H-induced superconducting phase is possibly gapless-like and multi-band in nature, in contrast with those induced in TiSe2 via copper, lithium, and electrostatic doping. This unique behavior is supported by ab initio calculations showing that high concentrations of H dopants induce a full reconstruction of the bandstructure, although with little coupling between electrons and high-frequency H phonons. Our findings provide a promising approach for engineering the ground state of transition metal dichalcogenides and other layered materials via gate-controlled protonation. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2399-3650 |
| Relation: | https://doaj.org/toc/2399-3650 |
| DOI: | 10.1038/s42005-023-01330-w |
| URL الوصول: | https://doaj.org/article/90319b974ce04d4d94d51c73a91a2260 |
| رقم الأكسشن: | edsdoj.90319b974ce04d4d94d51c73a91a2260 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 23993650 |
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| DOI: | 10.1038/s42005-023-01330-w |