铂插层2h - ta2中的超导性

IF 6.1 1区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Frontiers Pub Date : 2025-04-16 DOI:10.1039/d5qi00683j

Lijia Zhou, Xiangjiang Dong, Qiang Li, Xianran Xing

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引用次数: 0

摘要

我们系统地研究了2H-PtxTaS2（0≤x≤0.08）的超导性能。随着铂（Pt）含量的增加，2H-TaS2中出现在75 K左右的电荷密度波（CDW）逐渐被抑制，并在Pt0.06TaS2中完全消失。同时，超导转变温度（Tc）先升高后降低，在x = 0.06时达到最大值，约为4.85 K。这一现象表明CDW与超导性（SC）之间存在竞争性相互作用。对Pt0.06TaS2超导参数的进一步测量表明，Tc的增强主要归因于费米能级态密度的增加。

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Superconductivity in Platinum-Intercalated 2H-TaS₂

We systematically investigated the superconducting properties of 2H-PtxTaS2 (0 ≤ x ≤ 0.08). As the platinum (Pt) content increases, the charge density wave (CDW) in 2H-TaS2, which appears at approximately 75 K, is progressively suppressed and completely disappears in Pt0.06TaS2. Meanwhile, the superconducting transition temperature (Tc) first increases and then decreases, reaching its maximum value of approximately 4.85 K at x = 0.06. This phenomenon suggests a competitive interplay between CDW and superconductivity (SC) in this system. Further measurements of the superconducting parameters of Pt0.06TaS2 indicate that the enhancement of Tc is primarily attributed to an increase in the density of states at the Fermi level.

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