论文标题
浆果偶极子光伏恶魔和金属光学距离的光电学的热力学
The Berry dipole photovoltaic demon and the thermodynamics of photo-current generation within the optical gap of metals
论文作者
论文摘要
我们拆除了先前认为的误解，即当撞击辐射的频率位于金属的光学间隙内，在小载体松弛率的极限内，散装整流机制不可能诱导净直流电流。我们认为，通常这种差距的整流机制是不可逆转的，并伴随着连续的能量与热浴交换，还必须伴随着较小但有限的辐射吸收，以确保净熵产生的积极性并遵守第二种热力学定律。但是，我们表明，由浆果曲率引起的频段内非线性霍尔效应是一种特殊的间隙整流机制，其表现为``photo-voltaic demon''，即它可以作为理想的可逆和散发器在辐射和外部电路之间的理想可逆和消散的传送器。它可逆的性质允许作为圆形极化光的放大器具有有趣的操作方式，其效率可以接近100％，并且在技术上可能是有希望的，尤其是在红外频率范围内。
We dismantle the previously held misconception that it is impossible for bulk rectification mechanisms to induce a net DC electric current when the frequency of the impinging radiation lies within the optical gap of a metal in the limit of small carrier relaxation rates. We argue that generically such in-gap rectification mechanisms are irreversible and accompanied by a continuous exchange of energy with a heat bath and must also be necessarily accompanied by a small but finite absorption of radiation in order to guarantee the positivity of the net entropy production and abide by the second law of thermodynamics. We show, however, that the intra-band non-linear Hall effect arising from the Berry curvature is a special kind of in-gap rectification mechanism that behaves as a ``photo-voltaic demon'', namely it can operate as an ideal reversible and dissipationless conveyor of energy between the radiation and an external circuit. Its reversible nature allows for an interesting mode of operation as an amplifier of circularly polarized light, whose efficiency can approach 100%, and which could be technologically promising especially in the infrared frequency range.
