Excitation spectroscopy of two-electron shell structures in carbon nanotube quantum dots in magnetic fields
Excitation spectroscopy of two-electron shell structures in carbon nanotube quantum dots in magnetic fields
复制标题
DOI：
10.1063/1.2010611
复制
发表时间：
2005-08
影响因子：
4
通讯作者：
S. Moriyama;T. Fuse;Y. Aoyagi;K. Ishibashi
中科院分区：
文献类型：
--
作者：
S. Moriyama;T. Fuse;Y. Aoyagi;K. Ishibashi
在单壁碳纳米管中制备了单量子点，并在40 mK下进行了单电子输运测量。库仑金刚石显示出金刚石尺寸的交替变化，奇偶效应，表明双电子壳层填充。激发光谱，其中库仑振荡峰被测量在磁场与一个大的源漏偏置电压揭示了塞曼分裂的单粒子状态。这为自旋二能级系统的制备迈出了重要的一步。
Single-quantum dots have been fabricated in an individual single-wall carbon nanotube, and the single-electron-transport measurements have been carried out at 40 mK. Coulomb diamonds showed an alternate change of the diamond size, an even-odd effect, indicating the two-electron shell filling. An excitation spectroscopy in which a Coulomb oscillation peak was measured in magnetic fields with a large source-drain bias voltage revealed the Zeeman splitting of single-particle states. The results suggest an important step for preparation of the spin two-level system.