Superconducting magnet for magnetotransport studies of mesoscopic systems

用于介观系统磁输运研究的超导磁体

• 批准号: 375905-2009
• 负责人: Champagne, Alexandre
• 金额: $ 10.88万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=412255
• 关键词: Superconducting; magnet; magnetotransport; studies; mesoscopic

We request a superconducting magnet system and a helium leak detector to support our long term objectives of understanding the interplays of structure and electronic degrees of freedom in nano/mesoscopic systems. The research program to be supported is described in details in the NSERC-Discovery "Interplays of structure and electronics in mesoscopic systems". We will use these equipments in magnetotransport studies of mesoscopic sytems such as graphene (monolayer of graphite) structures, carbon nanotubes, and metallic and semiconducting self-assembled materials. The large magnetic field that the magnet can achieve (14 Tesla), and the leak detector's capability to monitor the vacuum in our low-temperature cryostat are necessary to study a large number of correlated electronic states in mesoscopic systems, such as the quantum Hall effects, localization effects and the Kondo effect. Here, we briefly discuss two sets of short term objectives where these equipments will be used: studies of the quantum Hall states in strained graphene and in graphene/insulator/graphene bilayers.

我们需要超导磁体系统和氦泄漏检测器来支持我们理解纳米/介观系统中结构和电子自由度的相互作用的长期目标。得到支持的研究项目在NSERC-Discovery“介观系统中结构和电子的相互作用”中有详细描述。我们将使用这些设备进行介观系统的磁输运研究，如石墨烯（单层石墨）结构、碳纳米管、金属和半导体自组装材料。磁体所能达到的大磁场（14特斯拉），以及检漏仪在低温低温恒温器中监测真空的能力，对于研究量子霍尔效应、局域化效应和近藤效应等介观系统中大量相关的电子态是必要的。在这里，我们简要讨论了这些设备将用于的两组短期目标：应变石墨烯和石墨烯/绝缘体/石墨烯双层中的量子霍尔态的研究。