论文标题
电子波十二次解耦
Electron-Phonon Decoupling in Two Dimensions
论文作者
论文摘要
为了观察电子系统中的多体定位，需要与晶格声子解耦，这仅在平衡系统中才有可能。我们表明，这种电子 - 音波解耦可能会发生在悬浮膜中，并且通过电子温度的双重性表现出来。通过研究带有二维声子的无序悬浮膜中的电子 - 音波冷却率，我们得出了这种双重性所需的条件，可以通过非线性电流电压特性的几个数量级的滞后跳跃来实验观察到这种条件。我们证明，在具有平衡电导率的Arrhenius形式的系统中，这种制度是可以实现的，同时在Mott或Efros-Shklovskii跳跃的材料中实际上无法到达。
In order to observe many-body localisation in electronic systems, decoupling from the lattice phonons is required, which is possible only in out-of-equilibrium systems. We show that such an electron-phonon decoupling may happen in suspended films and it manifests itself via a bistability in the electron temperature. By studying the electron-phonon cooling rate in disordered, suspended films with two-dimensional phonons, we derive the conditions needed for such a bistability, which can be observed experimentally through hysteretic jumps of several orders of magnitude in the nonlinear current-voltage characteristics. We demonstrate that such a regime is achievable in systems with an Arrhenius form of the equilibrium conductivity, while practically unreachable in materials with Mott or Efros-Shklovskii hopping.
