Ionic liquid gating induced self-intercalation of transition metal chalcogenides
arXiv:2308.13402 · doi:10.1038/s41467-023-40591-5
Abstract
Ionic liquids provide versatile pathways for controlling the structures and properties of quantum materials. Previous studies have reported electrostatic gating of nanometre-thick flakes leading to emergent superconductivity, insertion or extraction of protons and oxygen ions in perovskite oxide films enabling the control of different phases and material properties, and intercalation of large-sized organic cations into layered crystals giving access to tailored superconductivity. Here, we report an ionic-liquid gating method to form three-dimensional transition metal monochalcogenides (TMMCs) by driving the metals dissolved from layered transition metal dichalcogenides (TMDCs) into the van der Waals gap. We demonstrate the successful self-intercalation of PdTe and NiTe, turning them into high-quality PdTe and NiTe single crystals, respectively. Moreover, the monochalcogenides exhibit distinctive properties from dichalcogenides. For instance, the self-intercalation of PdTe leads to the emergence of superconductivity in PdTe. Our work provides a synthesis pathway for TMMCs by means of ionic liquid gating driven self-intercalation.
References in corpus (17)
- Van der Waals density functionals applied to solids
- Two-dimensional materials from high-throughput computational exfoliation of experimentally known compounds
- Superconductivity protected by spin-valley locking in ion-gated MoS2
- Highly crystalline 2D superconductors
- Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe
- Metallic ground state in an ion-gated two-dimensional superconductor
- Experimental Realization of Type-II Dirac Fermions in PdTe Superconductor
- Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films on SrTiO3 and MgO
- The Ginzburg-Landau Theory of Type II superconductors in magnetic field
- Gate-controlled BCS-BEC crossover in a two-dimensional superconductor
- Low-energy type-II Dirac fermions and spin-polarized topological surface states in transition-metal dichalcogenide NiTe
- Enhancement of superconductivity in organic-inorganic hybrid topological materials
- Protonation induced high-Tc phases in iron-based superconductors evidenced by NMR and magnetization measurements
- Percolating Superconductivity in Air-Stable Organic-Ion Intercalated MoS2
- PdTe a 4.5K Type II BCS Superconductor
- Signatures of Chiral Superconductivity in Chiral Molecule Intercalated Tantalum Disulfide
- Identification of Topological Surface State in PdTe2 Superconductor by Angle-Resolved Photoemission Spectroscopy