Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells

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The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg{sub 1-y}Mn{sub y}Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the Mn atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the Mn atoms. This effect enables dissipationless charge current in ... continued below

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5 pages

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Liu, Chao-Xing; Qi, Xiao-Liang; Dai, Xi; Fang, Zhong & Zhang, Shou-Cheng March 19, 2010.

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The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg{sub 1-y}Mn{sub y}Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the Mn atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the Mn atoms. This effect enables dissipationless charge current in spintronics devices.

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5 pages

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  • Journal Name: Phys.Rev.Lett.101:146802,2008

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  • Report No.: SLAC-PUB-13923
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 973789
  • Archival Resource Key: ark:/67531/metadc926244

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Office of Scientific & Technical Information Technical Reports

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  • March 19, 2010

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  • Nov. 13, 2016, 7:26 p.m.

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  • July 13, 2017, 4:34 p.m.

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Liu, Chao-Xing; Qi, Xiao-Liang; Dai, Xi; Fang, Zhong & Zhang, Shou-Cheng. Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells, article, March 19, 2010; United States. (digital.library.unt.edu/ark:/67531/metadc926244/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.