论文标题
$ srtio_3 $的正常状态的数字奇偶校验效应
Number Parity effect in the normal state of $SrTiO_3$
论文作者
论文摘要
我们研究了最近在氧化钛/腺钛氧化钛氧化钛界面（STO/LAO）生产的单电子设备的正常状态下发现的均匀效果。在数量均等的形式主义和现象学费用 - 玻色子模型的框架内，我们发现，与传统的超导体形成鲜明对比的是，数字奇偶校验效应的跨界温度$ t^*$相当大于超导过渡温度$ t_c $，这是由于存在$ t_c $。此外，预成式对的有限寿命减少了几个数量级，有效的状态$ n _ {\ rm eff} $可用于库仑奇怪的奇怪状态，可用于库仑的奇怪状态，库仑封锁了斯托/老岛。我们的发现与Levy和同事有关STO/LAO基于STO/LAO的单电子设备报告的实验结果符合定性协议。
We study the recently discovered even-odd effects in the normal state of single-electron devices manufactured at strontium titanium oxide/lanthanum aluminum oxide interfaces (STO/LAO). Within the framework of the number parity-projected formalism and a phenomenological fermion-boson model we find that, in sharp contrast to conventional superconductors, the crossover temperature $T^*$ for the onset of number parity effect is considerably larger than the superconducting transition temperature $T_c$ due to the existence of a pairing gap above $T_c$. Furthermore, the finite lifetime of the preformed pairs reduces by several orders of magnitude the effective number of states $N_{\rm eff}$ available for the unpaired quasiparticle in the odd parity state of the Coulomb blockaded STO/LAO island. Our findings are in qualitative agreement with the experimental results reported by Levy and coworkers for STO/LAO based single electron devices.
