论文标题
通过磁声量子振荡探测的NBP中电子相互作用的强各向异性
Strong anisotropy of electron-phonon interaction in NbP probed by magnetoacoustic quantum oscillations
论文作者
论文摘要
在这项研究中，我们报告了NBP超声速度的De Haas-Vanα型量子振荡（QO）的观察以及在脉冲磁场中超声衰减中的“巨型QO”。不同声学模式的QO振幅的差异揭示了有效变形电位的强各向异性，我们估计，对于费米表面的某些部分，我们估计该差异高达$ 9 \，\ mathrm {ev} $。此外，Qo频率的自然过滤以及将单个Landau水平的追踪到量子极限，可以对NBP的费米表面进行更详细的研究，如先前通过分析在磁化或电阻率中观察到的QO所实现的那样。
In this study, we report on the observation of de Haas-van Alphen-type quantum oscillations (QO) in the ultrasound velocity of NbP as well as `giant QO' in the ultrasound attenuation in pulsed magnetic fields. The difference of the QO amplitude for different acoustic modes reveals a strong anisotropy of the effective deformation potential, which we estimate to be as high as $9\,\mathrm{eV}$ for certain parts of the Fermi surface. Furthermore, the natural filtering of QO frequencies and the tracing of the individual Landau levels to the quantum limit allows for a more detailed investigation of the Fermi surface of NbP as was previously achieved by means of analyzing QO observed in magnetization or electrical resistivity.
