论文标题
量子制度中的gan/algan 2degs：磁通和光致发光至60特斯拉
GaN/AlGaN 2DEGs in the quantum regime: Magneto-transport and photoluminescence to 60 tesla
论文作者
论文摘要
使用高达60吨的高磁场，我们报告了通过分子梁外观延长生长的GAN/Algan异质结中的二维电子气体（2DEG）的磁性传输和光致发光（PL）研究。运输测量结果表明可以超过量子限制（Landau级填充因子$ν<1 $），并显示了$ν= 2/3 $分数量子霍尔州的证据。同时进行光学和传输测量结果揭示了整数量子大厅方案中PL强度和纵向电阻率的同步量子振荡。 PL光谱直接揭示了占2维二元和电子质量中占领的兰道水平的分散。这些结果证明了高密度2DEG中量子现象的详细测量的高（脉冲）磁场的实用性。
Using high magnetic fields up to 60 T, we report magneto-transport and photoluminescence (PL) studies of a two-dimensional electron gas (2DEG) in a GaN/AlGaN heterojunction grown by molecular-beam epitaxy. Transport measurements demonstrate that the quantum limit can be exceeded (Landau level filling factor $ν< 1$), and show evidence for the $ν=2/3$ fractional quantum Hall state. Simultaneous optical and transport measurements reveal synchronous quantum oscillations of both the PL intensity and longitudinal resistivity in the integer quantum Hall regime. PL spectra directly reveal the dispersion of occupied Landau levels in the 2DEG and therefore the electron mass. These results demonstrate the utility of high (pulsed) magnetic fields for detailed measurements of quantum phenomena in high-density 2DEGs.
