论文标题
库仑阻止通用状态以外的温度计
Coulomb blockade thermometry beyond the universal regime
论文作者
论文摘要
单电子在介质金属岛上的电荷定位导致对电流的抑制，称为库仑阻滞。当这种校正很小时，它可以实现一级电子温度计，因为Pekola等人首先证明了这一点。 （Phys。Rev.Letters，73，2903 [1994]）。但是，在低温极限中，随机电荷偏移会影响电导率并限制单个金属岛的普遍行为。在这项工作中，我们从数值上研究了连接阵列的电导，即使考虑到设备参数的变化，也可以证明对大阵列的主要状态的扩展。我们发现我们的模拟与亚雪木尔文温度状态中测得的电导痕迹非常吻合。
The charge localization of single electrons on mesoscopic metallic islands leads to a suppression of the electrical current, known as the Coulomb blockade. When this correction is small, it enables primary electron thermometry, as it was first demonstrated by Pekola et al. (Phys. Rev. Letters, 73, 2903 [1994]). However, in the low temperature limit, random charge offsets influence the conductance and limit the universal behavior of a single metallic island. In this work, we numerically investigate the conductance of a junction array, and demonstrate the extension of the primary regime for large arrays, even when the variations in the device parameters are taken into account. We find that our simulations agree well with measured conductance traces in the submillikelvin electron temperature regime.
