论文标题
通过EDL门控NBN中的超导过渡温度调制
Superconducting Transition Temperature Modulation in NbN via EDL Gating
论文作者
论文摘要
我们在硝化氮化物的薄膜上进行电动双层门控实验。得益于提高效率的交联聚合物电解质系统，我们在设备的活动通道中诱导了高达$ \ $ \ $ \ $ \ times 10^{15} \，\ mathrm {cm}^{ - 2} $。我们报告了对超导转变温度（根据门电压的符号）的可逆调节，其大小和符号与将扰动的超导状态限制到薄表面层的幅度和符号是不相容的，正如在幼稚的筛选模型中所期望的那样。
We perform electric double-layer gating experiments on thin films of niobium nitride. Thanks to a cross-linked polymer electrolyte system of improved efficiency, we induce surface charge densities as high as $\approx 2.8 \times 10^{15}\,\mathrm{cm}^{-2}$ in the active channel of the devices. We report a reversible modulation of the superconducting transition temperature (either positive or negative depending on the sign of the gate voltage) whose magnitude and sign are incompatible with the confinement of the perturbed superconducting state to a thin surface layer, as would be expected within a naïve screening model.
