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Synthesis of TaS2 Nanotubes From Ta2O5 Nanotube Templates


  • This work was supported by the NSF CAREER Award (CHE-0349302) and the David and Lucile Packard Foundation. This work used the NUANCE Center facilities, which are supported by NSF-MRSEC, NSF-NSEC, and the Keck Foundation as well as the J. B. Cohen X-Ray Diffraction Facility supported by the MRSEC program of the National Science Foundation (DMR-0520513) at the Materials Research Center of Northwestern University. The authors also thank Dr. O. Chernyashevskyy at the Magnetic and Physical Properties Measurement Facility for useful discussions.


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Multi-walled TaS2 nanotubes are synthesized from anodized Ta2O5 nanotube templates in a gas-phase reaction, with control over the length, diameter, and number of TaS2 layers within a nanotube. TaS2 nanotubes exhibit elevated superconducting transition temperatures and suppressed charge density wave transition temperatures compared to bulk, offering a straightforward method of characterizing other transition metal dichalcogenide materials in reduced dimensions.