Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany and Institut für Theorie der Kondensierten Materie and DFG Center for Functional Nanostructures, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany and Institut für Nanotechnologie, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany and Ioffe Physical Technical Institute, 194021 St. Petersburg, Russia.
Phys Rev Lett. 2013 Nov 15;111(20):206801. doi: 10.1103/PhysRevLett.111.206801. Epub 2013 Nov 11.
We study transport in the domain state, the so-called zero-resistance state, that emerges in a two-dimensional electron system in which the combined action of microwave radiation and magnetic field produces a negative absolute conductivity. We show that the voltage-biased system has a rich phase diagram in the system size and voltage plane, with second- and first-order transitions between the domain and homogeneous states for small and large voltages, respectively. We find the residual negative dissipative resistance in the stable domain state.
我们研究了在二维电子系统中出现的域状态（即所谓的零电阻状态）中的输运，其中微波辐射和磁场的联合作用产生了负的绝对电导率。我们表明，在系统尺寸和电压平面上，偏置电压的系统具有丰富的相图，分别在小电压和大电压下，域态和均匀态之间存在二级和一级相变。我们在稳定的域态中发现了残余的负耗散电阻。
