It is observed that many thin superconducting films with not too high disorder level (generally R$_N/\Box less than 2000 $ Ohms) placed in magnetic field show an anomalous metallic phase where the resistance is low but still finite as temperature goes to zero. Here we report in weakly disordered amorphous InO$_x$ thin films, that this anomalous metal phase possesses no cyclotron resonance and hence non-Drude electrodynamics. The absence of a finite frequency resonant mode can be associated with a vanishing downstream component of the vortex current parallel to the supercurrent and an emergent particle-hole symmetry of this metal, which establishes its non-Fermi liquid character.

中文翻译：

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InO $ _ {x} $的异常金属相中没有回旋加速器共振

可以观察到，许多杂散度不高的超导薄膜（通常R $ _N / \ Box小于2000 $ Ohms）置于磁场中时，显示出一种金属相反常现象，其电阻较低，但随着温度降至零仍是有限的。 。在这里，我们在微弱无定形的非晶InO $ _x $薄膜中进行了报道，该异常金属相没有回旋加速器共振，因此不具有Drude电动力学特性。缺乏有限频率共振模式可能与平行于超电流的涡流下游分量消失以及这种金属出现的颗粒-孔对称性有关，从而确立了其非费米液体特性。