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Simultaneous measurement of resistively and optically detected nuclear magnetic resonance in the v = 2/3 fractional quantum Hall regime

机译：在v = 2/3分数量子霍尔结构中同时测量电阻和光学检测的核磁共振

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摘要

We observe nuclear magnetic resonance (NMR) in the fractional quantum Hall regime at the Landau-level filling factor of v = 2/3 from simultaneous measurement of longitudinal resistance and photoluminescence (PL). The dynamic nuclear-spin polarization is induced by applying a huge electronic current at the spin phase transition point of v = 2/3. The NMR spectra obtained from changes in resistance and PL intensity are qualitatively the same; that is, the Knight-shift (spin-polarized region) and zero-shift (spin-unpolarized region) resonances are observed in both. The observed change in PL intensity is interpreted as a consequence of the trion scattering induced by polarized nuclear spins. We conclude that both detection methods probe almost the same local phenomena.
机译：通过同时测量纵向电阻和光致发光（PL），我们在分数量子霍尔状态下在朗道能级填充因子为v = 2/3时观察到了核磁共振（NMR）。动态核自旋极化是通过在自旋相变点v = 2/3处施加大电流来感应的。从电阻和PL强度变化获得的NMR谱在质量上是相同的。即，在两者中均观察到奈特位移（自旋极化区域）和零位移（自旋非极化区域）共振。观察到的PL强度变化被解释为极化核自旋引起的三极子散射的结果。我们得出的结论是，两种检测方法都可以探测几乎相同的局部现象。

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  • 来源
    《Physical review》 |2016年第8期|081104.1-081104.5|共5页
  • 作者

    Keiichirou Akiba; Katsumi Nagase; Yoshiro Hirayama;

  • 作者单位

    Department of Physics, Tohoku University, Sendai, 980-8578, Japan,JST, ERATO Nuclear Spin Electronics Project, Sendai, 980-8578, Japan,Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan;

    Department of Physics, Tohoku University, Sendai, 980-8578, Japan,JST, ERATO Nuclear Spin Electronics Project, Sendai, 980-8578, Japan;

    Department of Physics, Tohoku University, Sendai, 980-8578, Japan,JST, ERATO Nuclear Spin Electronics Project, Sendai, 980-8578, Japan,WPI-AIMR, Tohoku University, Sendai, 980-0812, Japan;

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