利用纳米模板实现碲量子线的确定性图案化与排列
Deterministic patterning and alignment of tellurium quantum wires using nanoscale templates
- University of California, Berkeley（加州大学伯克利分校）
- Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）
- Institute of Science Tokyo（东京科学大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究利用纳米线模板在非晶衬底上实现碲原子链的取向单晶生长，通过亚20纳米宽度实现强排列，并在场效应晶体管中观察到一维子带电导平台和库仑阻塞，为量子器件集成提供可扩展路径。
AI中文摘要：
碲（Te）是一种引人入胜的一维（1D）半导体，最近作为p型沟道材料引起了相当大的关注。然而，可扩展的合成方法缺乏对Te原子链取向和图案化的控制，从而限制了其实际应用。在理论指导下，我们利用纳米线形状的模板克服了这一挑战，在非晶衬底上实现了Te的取向单晶生长。当模板宽度减小到20纳米以下时，实现了Te原子链的强排列。这种高结构有序性通过4D扫描透射电子显微镜得到确认，使得能够观察确定性图案化Te的原始量子输运现象。场效应晶体管在77 K时表现出明确的电导平台，这是由于单个一维子带的占据。此外，在1.7 K时出现库仑阻塞，Te沟道充当栅极可调量子点。这种合成方法为未来电子和量子技术中集成基于Te的量子材料提供了一条可扩展的途径。
英文摘要：
Tellurium (Te) is an intriguing one-dimensional (1D) semiconductor that has recently attracted considerable interest as a p-type channel material. However, scalable synthesis methods have lacked control over the orientation and patterning of the Te atomic chains, thus limiting its practical use. Guided by theory, we overcome this challenge using nanowire-shaped templates to achieve oriented, single-crystal growth of Te on amorphous substrates. Strong alignment of Te atomic chains is achieved as template widths are reduced to sub-20 nm. This high structural order, confirmed by 4D scanning transmission electron microscopy, enables the observation of pristine quantum transport phenomena for deterministically patterned Te. Field-effect transistors exhibit well-defined conductance plateaus at 77 K due to population of individual 1D subbands. Furthermore, Coulomb blockade emerges at 1.7 K, with the Te channel acting as a gate-tunable quantum dot. This synthesis approach provides a scalable pathway for integration of Te-based quantum materials for future electronic and quantum technologies.
