Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5

We report on the superconductivity in ternary transition metal tellurides Ta2Pd3Te5 and Nb2Pd3Te5, which have a one-dimensional crystal structure. Single-crystalline and polycrystalline samples of Ta2Pd3Te5 show nonmetallic electron conduction, while Ti or W doping results in metallic behavior with...

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Veröffentlicht in:Journal of the Physical Society of Japan 2021-06, Vol.90 (6), p.1
Hauptverfasser: Higashihara, Naoya, Okamoto, Yoshihiko, Yoshikawa, Yuma, Yamakawa, Youichi, Takatsu, Hiroshi, Kageyama, Hiroshi, Takenaka, Koshi
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container_issue 6
container_start_page 1
container_title Journal of the Physical Society of Japan
container_volume 90
creator Higashihara, Naoya
Okamoto, Yoshihiko
Yoshikawa, Yuma
Yamakawa, Youichi
Takatsu, Hiroshi
Kageyama, Hiroshi
Takenaka, Koshi
description We report on the superconductivity in ternary transition metal tellurides Ta2Pd3Te5 and Nb2Pd3Te5, which have a one-dimensional crystal structure. Single-crystalline and polycrystalline samples of Ta2Pd3Te5 show nonmetallic electron conduction, while Ti or W doping results in metallic behavior with a bulk superconducting transition at 2–4 K. In contrast, the polycrystalline samples of Nb2Pd3Te5, which are found to be isostructural to Ta2Pd3Te5, show a bulk superconducting transition at 3.3 K. The crystal structure and physical properties of Ta2Pd3Te5 and Nb2Pd3Te5 are also discussed in comparison with a candidate excitonic insulator Ta2NiSe5.
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Single-crystalline and polycrystalline samples of Ta2Pd3Te5 show nonmetallic electron conduction, while Ti or W doping results in metallic behavior with a bulk superconducting transition at 2–4 K. In contrast, the polycrystalline samples of Nb2Pd3Te5, which are found to be isostructural to Ta2Pd3Te5, show a bulk superconducting transition at 3.3 K. 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subjects Crystal structure
Physical properties
Polycrystals
Single crystals
Superconductivity
Tellurides
Titanium
Transition metals
title Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5
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