‘Narrow-band high-lying excitons with negative-mass electrons in monolayer WSe 2 ’ (K.-Q. Lin, C. S. Ong, S. Bange, P.E. Faria Junior, B. Peng, J.D. Ziegler, J. Zipfel, C. Bäuml, N. Paradiso, K.Watanabe, T. Taniguchi, C. Strunk, B. Monserrat, J. Fabian, A. Chernikov, D.Y. Qiu, S.G. Louie, J.M. Lupton, Nature Communications 12, 5500 (2021)) is one of the 25 most downloaded Nature Communications articles in physics published in 2021.