Han, K.; Tang, N.; Ye, J. D.; Duan, J. X.; Liu, Y. C.; Teo, K. L.; Shen, B.
Quantum transport properties of two-dimensional electron gas(2DEG) in undoped MgₓZn₁ˍₓO/ZnO heterostructures grown by metal organic vapor phase epitaxy have been investigated. A large zero-field spin-splitting energy more than 15 meV in the 2DEG is determined at 1.6 K. Meanwhile, ferromagnetism is observed in the heterostructures. The findings reveal that the 2DEG is spin polarized at zero magnetic fields. It is believed that the exchange interaction between the itinerant electrons in the...[Show more]
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