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arXiv 2011.14798cond-mat.mes-hall
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硅纳米三明治中的高温量子动力学效应

High Temperature Quantum Kinetic Effect in Silicon Nanosandwiches

N. T. Bagraev, V. Yu. Grigoryev, L. E. Klyachkin, A. M. Malyarenko, V. A. Mashkov, V. V. Romanov, N. I. Rul

摘要:

半导体量子阱边缘沟道的负U杂质带限制了自旋相关输运过程中的内部有效冷却,降低了电子-电子相互作用。上述也促进了复合玻色子和费米子的创建,通过捕获的边缘通道上的单个磁通量量子的条件下,低的载子的面密度,从而打开了新的机会登记的量子动力学现象在弱磁场在高温至室温。作为上述的一个版本,我们提出了在硅三明治结构中的高温de Haas-van Alphen,300 K,量子Hall,77 K,效应以及量子电导阶梯的第一个发现,该硅三明治结构代表了由n型Si(100)表面上重掺杂硼的delta势垒限制的超窄,2 nm,p型量子阱(Si-QW)。

英文摘要:

The negative-U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the electron-electron interaction. The aforesaid promotes also the creation of composite bosons and fermions by the capture of single magnetic flux quanta on the edge channels under the conditions of low sheet density of carriers, thus opening new opportunities for the registration of the quantum kinetic phenomena in weak magnetic fields at high temperatures up to the room temperature. As a certain version noted above we present the first findings of the high temperature de Haas-van Alphen, 300K, quantum Hall, 77K, effects as well as quantum conductance staircase in the silicon sandwich structure that represents the ultra-narrow, 2 nm, p-type quantum well (Si-QW) confined by the delta barriers heavily doped with boron on the n-type Si (100) surface.

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