Quantum Tunneling in Single Component Two-Dimensional and Three-Dimensional Systems

单组分二维和三维系统中的量子隧道

• 批准号: 8819507
• 负责人: John Goodkind
• 金额: $ 29.8万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8819507&HistoricalAwards=false
• 关键词: Quantum; Tunneling; Single; Component; Two

Studies of two-dimensional electron gas on the surface of liquid helium, and three-dimensional solid helium-four, focussing on evidence for quantum tunnelling of electrons or helium atoms. The solid helium-four study will be conducted using ultrasonic attenuation, thermal conductivity, heat capacity and heat pulse propagation experiments to look for quasiparticle excitations, defect behavior, and evidence for the formation of a "supersolid"-- the solid state analogue of a superfluid. Measurements of the escape rate of electrons from the surface of liquid helium will be performed in order to characterize the groundstate and excitations of the two-dimensional electron system.

液体表面二维电子气的研究 氦和三维固体氦-4，重点是 电子或氦原子的量子隧穿的证据。 固体氦-4研究将使用超声波进行 衰减、热导率、热容和热脉冲 传播实验寻找准粒子激发， 缺陷的行为，和证据的形成， “超固体”--超流体的固态类似物。 电子从表面逃逸率的测量 液氦将进行，以表征 二维电子的基态和激发 系统