Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells
Journal Article
·
· Phys.Rev.Lett.101:146802,2008
OSTI ID:973789
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.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 973789
- Report Number(s):
- SLAC-PUB-13923
- Journal Information:
- Phys.Rev.Lett.101:146802,2008, Journal Name: Phys.Rev.Lett.101:146802,2008
- Country of Publication:
- United States
- Language:
- English
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