论文标题
由负压引起的重离子辐照的2H-NBSE2的超导抑制
Suppression of Superconductivity in Heavy-ion Irradiated 2H-NbSe2 Caused by Negative Pressure
论文作者
论文摘要
研究了由320 MEV AU辐照产生的柱状缺陷对2H-NBSE2单晶具有剂量当量匹配场的影响，最多为16吨。发现临界温度几乎以0.07 k/t的速率线性抑制。同时，发现晶格参数A和C分别以0.016％/t和0.030％/t的速率扩展。这样的晶格扩展应作为影响TC的负压。通过通过晶格扩展和混乱分离重子辐照对TC抑制的影响，发现TC通过晶格扩展而不是通过疾病来抑制TC。
Effects of columnar defects created by 320 MeV Au irradiation on 2H-NbSe2 single crystals with a dose equivalent matching field up to 16 T were studied. Critical temperature is found to be suppressed almost linearly at a rate of 0.07 K/T. At the same time, the lattice parameters a and c are found to be expanded at rates of 0.016%/T and 0.030%/T, respectively. Such a lattice expansion should work as negative pressure to affect Tc. By separating the effect of heavy-ion irradiation on Tc suppression through lattice expansion and disorder, it is found that Tc is suppressed more by lattice expansion rather than by disorder.
