ON THE COVER
February 22, 2021
Photoelastic response of a monolayer of bidisperse disks made of a birefringent material and confined to an area of approximately 0.5 x 0.5m2.
Kuang Liu et al.
Phys. Rev. Lett. 126, 088002 (2021)
EDITORS' SUGGESTION
Exceptional points in non-Hermitian topological lattices obey doubling theorems just like Weyl and Dirac points which necessarily appear in pairs in Hermitian materials.
Zhesen Yang, A. P. Schnyder, Jiangping Hu, and Ching-Kai Chiu
Phys. Rev. Lett. 126, 086401 (2021)
EDITORS' SUGGESTION
Large mechanical deformation may achieve the complex profiles required to minimize aberration and thus produce superior soft lenses.
Ahmad Zareei, Eder Medina, and Katia Bertoldi
Phys. Rev. Lett. 126, 084301 (2021)
EDITORS' SUGGESTION
Measurement of secondary fluorine cosmic rays by the AMS experiment unexpectedly shows a rigidity dependence distinct from the other primary classes.
M. Aguilar et al. (AMS Collaboration)
Phys. Rev. Lett. 126, 081102 (2021)
EDITORS' SUGGESTION
Fractional quantum Hall bilayers provide a tunable platform to study collective excitations with rich topological and geometric properties.
Zhao Liu, Ajit C. Balram, Zlatko Papić, and Andrey Gromov
Phys. Rev. Lett. 126, 076604 (2021)
EDITORS' SUGGESTION
A spin system crossing a quantum phase transition nonadiabatically may undergo exponential suppression of excitations in the presence of asymmetries.
Bin Yan, Vladimir Y. Chernyak, Wojciech H. Zurek, and Nikolai A. Sinitsyn
Phys. Rev. Lett. 126, 070602 (2021)
EDITORS' SUGGESTION
Contrary to what has been previously assumed for solids, the bulk contributes significantly to the mechanochemical coupling at the surface/interface.
Zhuohan Li and Izabela Szlufarska
Phys. Rev. Lett. 126, 076001 (2021)
EDITORS' SUGGESTION
Scanning tunneling spectroscopy reveals finite-energy bound states as well as zero-energy states inside the superconducting gap.
Dongfei Wang et al.
Phys. Rev. Lett. 126, 076802 (2021)