论文标题
疾病引起的从I型转变为II型超导率在Dirac半学PDTE $ _2 $中
Disorder induced transition from type-I to type-II superconductivity in the Dirac semimetal PdTe$_2$
论文作者
论文摘要
我们报告了一项兴奋剂研究，该研究针对PT的Isoelectronic替换有意地诱导PDTE $ _2 $。两个单一晶批PD $ _ {1-x} $ pt $ _x $ te $ _2 $已准备好使用名义掺杂浓度x = 0.05，x = 0.10。通过能量分散X射线光谱（EDX）表征的样品表征揭示了PT在晶体中并未均匀溶解。对于名义值x = 0.10从批处理切割的小单晶似乎具有x = 0.09，以及非化学计量构图pd $ _ {0.97} $ pt $ _ {<0.004} $ _ {<0.004} $ te $ _ TE $ _ {2.03} $。磁性和热容量测量表明，在增加疾病时，从I型到II型超导行为的过渡。从运输测量值我们计算出剩余电阻率$ρ_0$ = 1.4 $ $ $ $ $ $ $ω$ cm足以将pdte $ _2 $变成第二种超导体。
We report a doping study directed to intentionally induce disorder in PdTe$_2$ by the isoelectronic substitution of Pt. Two single-crystalline batches Pd$_{1-x}$Pt$_x$Te$_2$ have been prepared with nominal doping concentrations x = 0.05 and x = 0.10. Sample characterization by energy dispersive x-ray spectroscopy (EDX) revealed Pt did not dissolve homogeneously in the crystals. For the nominal value x = 0.10 small single crystals cut from the batch appeared to have x = 0.09, as well as the non stoichiometric composition Pd$_{0.97}$Pt$_{<0.004}$Te$_{2.03}$. Magnetic and heat capacity measurements demonstrate a transition from type-I to type-II superconducting behavior upon increasing disorder. From transport measurements we calculate a residual resistivity $ρ_0$ = 1.4 $μ$$Ω$cm suffices to turn PdTe$_2$ into a superconductor of the second kind.
