Electric field control of magnetism

Abstract

Electric field control of magnetism is an extremely exciting area of research, from both a fundamental science and an applications perspective and has the potential to revolutionize the world of computing. To realize this will require numerous further innovations, both in the fundamental science arena as well as translating these scientific discoveries into real applications. Thus, this article will attempt to bridge the gap between condensed matter physics and the actual manifestations of the physical concepts into applications. We have attempted to paint a broad-stroke picture of the field, from the macroscale all the way down to the fundamentals of spin–orbit coupling that is a key enabler of the physics discussed. We hope it will help spur more translational research within the broad materials physics community. Needless to say, this article is written on behalf of a large number of colleagues, collaborators and researchers in the field of complex oxides as well as current and former students and postdocs who continue to pursue cutting-edge research in this field.

Correlation-induced magnetism in substrate-supported 2D metal-organic frameworks

“…Our work quantitatively isolates the effect of each of these phenomena on the system's magnetic properties. Sensitivity to charge transfer allows switching the magnetic phases by an external electric field, which we explicitly demonstrate in DCA-Cu, suggesting possible applications in energy-efficient electricfield-controlled spintronics 53,54 . Understanding how different parameters affect the magnetism in this MOF allows us to tune the electron-electron interactions and magnetic phases, a feature not offered by intrinsically magnetic systems.…”

“…If we consider a 10 nm thick parallel-plate capacitor with hBN as a dielectric with a dielectric constant of 3.76 62 , we get a switching voltage of 12 V and, for a 10 by 10 nm device, a switching energy of 24 aJ. These voltages are experimentally feasible and the energies are very low 53,54 . If higher electric fields or capacitances are required, electrolytic gates could be employed 63 .…”

Correlation-induced magnetism in substrate-supported 2D metal-organic frameworks

“…Our work quantitatively isolates the effect of each of these phenomena on the system's magnetic properties. Sensitivity to charge transfer allows switching the magnetic phases by an external electric field, which we explicitly demonstrate in DCA-Cu, suggesting possible applications in energy-efficient electric-field-controlled spintronics 46,47 . Understanding how different parameters affect the magnetism in this MOF allows us to tune the electron-electron interactions and magnetic phases, a feature not offered by intrinsically magnetic systems.…”

“…If we consider a 10 nm thick parallel-plate capacitor with hBN as a dielectric with a dielectric constant of 3.76 56 , we get a switching voltage of 12 V and, for a 10 by 10 nm device, a switching energy of 24 aJ. These voltages are experimentally feasible and the energies are very low 46,47 . If higher electric fields or capacitance is required, electrolytic gates could be employed 57 .…”

Interface-related phenomena in epitaxial complex oxide ferroics across different thin film platforms: opportunities and challenges

“…While, there are many reviews on both SL and VAN for creating artificial multiferroics, i.e. use of coupled systems rather than an intrinsic single phase material, 135 there has been insufficient information discussing the problems of achieving ‘practical’ systems using two different materials forms and how to overcome these. We cover these points below.…”