@article{12146, author = {Klaus von Klitzing and Tapash Chakraborty and Philip Kim and Vidya Madhavan and Xi Dai and James McIver and Yoshinori Tokura and Lucile Savary and Daria Smirnova and Ana Maria Rey and Claudia Felser and Johannes Gooth and Xiaoliang Qi}, title = {40 years of the quantum Hall effect}, abstract = {The discovery of the quantum Hall effect (QHE) marked a turning point in condensed-matter physics. The measurement of the Hall resistance showed that electronic resistance could be defined precisely in terms of fundamental constants, even in a disordered and irregular sample. Over the past 40 years, the QHE has inspired new theories and led to experimental discoveries in a range of fields going beyond solid-state electronics to photonics and quantum entanglement. In this Viewpoint, physicists reflect on how the QHE has influenced their research.}, year = {2020}, journal = {Nature Reviews Physics}, volume = {2}, chapter = {397–401}, pages = {397–401}, month = {2020-07}, url = {https://www.nature.com/articles/s42254-020-0209-1}, doi = {10.1038/s42254-020-0209-1}, }