ON THE COVER
Electrical control of magnetism by electric field and current-induced torques
March 13, 2024
Albert Fert et al.
Rev. Mod. Phys. 96, 015005 (2024)
Jiangfeng Du et al.
Rev. Mod. Phys. 96, 025001 (2024)
Nitrogen-vacancy centers in diamond are sensitive to magnetic fields, and a single center permits detection of electron and nuclear spins and imaging of single molecules in its vicinity. This article reviews the achievements of advanced methods to obtain spectral and spatial resolution and it points to technical problems that remain to be solved for widespread and multidisciplinary adoption of single-molecule magnetic resonance spectroscopy.
Tirth Shah, Christian Brendel, Vittorio Peano, and Florian Marquardt
Rev. Mod. Phys. 96, 021002 (2024)
Artificially engineered mechanical systems, sometimes called metamaterials, offer many promising applications on length scales ranging from macroscopic systems to the nanoscale. A topic of particular interest is the existence of topologically protected phononic edge states in such systems that are analogous to the electronic edge states that give rise to the quantum Hall effect. This Colloquium gives an introduction to topologically protected transport in metamaterials and its applications for controlling acoustic transport.
M. Marmol, E. Gachon, and D. Faivre
Rev. Mod. Phys. 96, 021001 (2024)
Magnetotactic bacteria have a built-in compass, in the form of a magnetosome chain made up of magnetic biominerals, that allows them to passively align along terrestrial magnetic field lines. They also sense oxygen gradients and swim using at least one flagellum. Hence, these bacteria are self-propelled active matter capable of displaying flocking behavior. This Colloquium explains the physics behind these various capabilities, as well as their interactions and biological significance.
Gino Isidori, Felix Wilsch, and Daniel Wyler
Rev. Mod. Phys. 96, 015006 (2024)
The standard model is successful at describing most of the data at the electroweak scale, but there are indications that new physics should exist at a higher energy scale. To identify, quantify, and elucidate the new physics, one can use the framework of the standard model effective field theory. This article reviews the construction and theoretical tools provided by the effective field theory for analyzing the present and future experimental data, as well as theoretical ideas for new physics.
Albert Fert et al.
Rev. Mod. Phys. 96, 015005 (2024)
Sign up to receive regular email alerts from Reviews of Modern Physics
Sign Up