Spin-polarized quantum transport and magnetic field-dependent carrier density in magnetic two-dimensional electron gases

✍ Scribed by R Knobel; N Samarth; S.A Crooker; D.D Awschalom

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 152 KB
• Volume: 6
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(99)00238-6

✦ Synopsis

Low-temperature magneto-transport and magneto-photoluminescence measurements are reported in magnetic two-dimensional electron gas samples formed by modulation doping shallow (Zn,Cd,Mn)Se single quantum wells. The small Fermi energy (∼1-2 meV) and large exchange-induced spin splitting (∼10 meV) results in a completely spin-polarized electron gas at ÿlling factors as high as = 12. Further, the spin splitting signiÿcantly perturbs the conÿnement potential, resulting in a magnetic ÿeld-dependent carrier density.