All-optical NMR in semiconductors provided by resonant cooling of nuclear spins interacting with electrons in the resonant spin amplification regime
All-optical NMR in semiconductors provided by resonant cooling of nuclear spins interacting with electrons in the resonant spin amplification regime
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DOI：
10.1103/physrevb.90.085311
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发表时间：
2014-03
影响因子：
3.7
通讯作者：
E. A. Zhukov;A. Greilich;D. Yakovlev;K. Kavokin;I. Yugova;O. A. Yugov;Dieter Suter;G. Karczewski;T. Wojtowicz;J. Kossut;V. Petrov;Y. Dolgikh;A. Pawlis;M. Bayer
中科院分区：
文献类型：
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作者：
E. A. Zhukov;A. Greilich;D. Yakovlev;K. Kavokin;I. Yugova;O. A. Yugov;Dieter Suter;G. Karczewski;T. Wojtowicz;J. Kossut;V. Petrov;Y. Dolgikh;A. Pawlis;M. Bayer
在n掺杂CdTe/（Cd，Mg）Te和ZnSe/（Zn，Mg）Se量子威尔斯阱中以及在ZnSe：F和GaAs外延层中观察到不同核同位素的光致核磁共振（NMR）共振冷却。通过在共振自旋放大机制中使用的时间分辨克尔旋转，我们可以将可以观察到这种效应的磁场范围扩展到170 kHz的核拉莫尔频率。从理论上分析了核自旋系统共振冷却的机制。所开发的方法允许我们用NMR共振来模拟共振自旋放大信号。
Resonant cooling of different nuclear isotopes manifested in optically-induced nuclear magnetic resonances (NMR) is observed in n-doped CdTe/(Cd,Mg)Te and ZnSe/(Zn,Mg)Se quantum wells and for donor-bound electrons in ZnSe:F and GaAs epilayers. By time-resolved Kerr rotation used in the regime of resonant spin amplification we can expand the range of magnetic fields where the effect can be observed up to nuclear Larmor frequencies of 170 kHz. The mechanism of the resonant cooling of the nuclear spin system is analyzed theoretically. The developed approach allows us to model the resonant spin amplification signals with NMR resonances.