"Odd viscosity": laboratory validation of a new quantum

粘度，流体动力学中摩擦力的类似物，一般来说是耗散的，但它在时间反演对称性被破坏的系统中有所不同，例如在某些量子流体中。在1995年，Avron、Seiler和Zoppers证明了在零温度下具有能隙的量子流体的粘度张量具有完全无耗散的反对称部分，也称为“奇”或霍尔粘度。霍尔粘度是一种体积性质，对此知之甚少。此外，在量子霍尔态的霍尔粘度的实验测量，到现在为止，没有触及，仍然是一个突出的问题，由于其复杂性。这是本工作的主要目标：实验证实“奇粘度”的存在，并提供一个全新的量子和实验证明。为此，我们与FSU的国家高磁场实验室建立了合作伙伴关系，我们将利用GervaisLab在超高迁移率电子设备方面的独特专业知识和恩格尔的世界领先的高磁场能力专业知识来证明这种全新量子概念的存在。

Viscosity, the analogue of friction in fluid dynamics, is dissipative in general but it differs in systems that have broken time-reversal symmetry, such as in some quantum fluids. In 1995 Avron, Seiler, and Zograf showed that the viscosity tensor of quantum fluids at zero temperature with an energy gap has an antisymmetric part which is entirely dissipationless, also known as "odd" or Hall viscosity. The Hall viscosity is a bulk property for which little is known. Furthermore, experimental measurements of Hall viscosity in quantum Hall states have, until now, been left untouched and remain an outstanding problem due to their complexity. This is the main objective of this work: to experimentally confirm the existence of "odd viscosity" and provide and experimental proof for an entirely new quantum. To do so, we have forged a partnership together with the FSU's national high magnetic field laboratory and we will make use of the GervaisLab unique expertise with ultra-high mobility electronic devices and Engel's their world-leading expertise with high-magnetic field capabilities to proof the existence of this entirely new quantum concept.