论文标题
6R-TAS2中的电荷密度波和超导性
Charge density wave and superconductivity in 6R-TaS2
论文作者
论文摘要
分层的过渡金属二甲苯二基化化合物1T-TAS2和4H-TAS2以其外来特性而闻名，其中包括电荷密度波，超导性，MOTT TRUSTITION等以及最近的量子自旋液体。在这里，我们报告了6R-TAS2中电荷密度波和超导性的磁性，传输和传输电子显微镜研究，这是该二甲基化型TAS2的相对较少研究的多晶型物。我们的高温电子显微镜揭示了室温和650K之间的多电荷密度波变变。 Magnetization, and the electrical resistivity measurements in the temperature range of 2-400 K reveal that 6R-TaS2 undergoes a charge density wave transition around 305 K and is followed by a transition to a superconducting state around 3.5 K. The low temperature specific heat measurement exhibits anomaly associated with the superconducting transition around 2.4 K. The estimated Ginzburg Landau parameter suggests that this compound lies at the extreme limit of II型超导性。
The layered transition metal dichalcogenide compounds 1T-TaS2 and 4H-TaS2 are well known for their exotic properties, which include charge density wave, superconductivity, Mott transition, etc., and lately quantum spin liquid. Here, we report the magnetic, transport and transmission electron microscopy study of the charge density wave and superconductivity in 6R-TaS2 which is a relatively less studied polymorph of this dichalcogenide TaS2. Our high temperature electron microscopy reveals multiple charge density wave transitions between room temperature and 650K. Magnetization, and the electrical resistivity measurements in the temperature range of 2-400 K reveal that 6R-TaS2 undergoes a charge density wave transition around 305 K and is followed by a transition to a superconducting state around 3.5 K. The low temperature specific heat measurement exhibits anomaly associated with the superconducting transition around 2.4 K. The estimated Ginzburg Landau parameter suggests that this compound lies at the extreme limit of type-II superconductivity.
