https://scholars.lib.ntu.edu.tw/handle/123456789/580629
標題: | Metallic state in a strongly interacting spinless two-valley electron system in two dimensions | 作者: | Melnikov M.Y Shashkin A.A Dolgopolov V.T Huang S.-H Liu C.W Zhu A.Y.X Kravchenko S.V. CHEE-WEE LIU |
關鍵字: | Degrees of freedom (mechanics); Electrospinning; Landforms; Magnetic fields; Temperature distribution; Electron systems; Metallic state; Metallic temperature dependence; Parallel magnetic field; Polarizing magnetic fields; Silicon samples; Temperature behavior; Two Dimensional (2 D); Electrons | 公開日期: | 2020 | 卷: | 101 | 期: | 4 | 來源出版物: | Physical Review B | 摘要: | We have studied the strongly interacting, two-valley two-dimensional (2D) electron system in ultrahigh mobility SiGe/Si/SiGe quantum wells in parallel magnetic fields strong enough to completely polarize the electron spins thus making the electron system "spinless." It occurs that the metallic temperature dependence of the resistivity, although weaker than that in the absence of magnetic field, still remains strong even when the spin degree of freedom is removed. Several independent methods have been used to establish the existence of the genuine MIT in the spinless two-valley 2D system. This is in contrast to the previous results obtained on more disordered silicon samples, where the polarizing magnetic field causes a complete quench of the metallic temperature behavior. ? 2020 American Physical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078331936&doi=10.1103%2fPhysRevB.101.045302&partnerID=40&md5=a7ebb2a93ef9c2b9db5e018fa51c1cb1 https://scholars.lib.ntu.edu.tw/handle/123456789/580629 |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.101.045302 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。