Design of Single-Molecule Multiferroics for Efficient Ultrahigh-Density Nonvolatile Memories.

ABSTRACT: It is known that an isolated single-molecule magnet tends to become super-paramagnetic even at an ultralow temperature of a few Kelvin due to the low spin switching barrier. Herein, single-molecule ferroelectrics/multiferroics is proposed, as the ultimate size limit of memory, such that every molecule can store 1 bit data. The primary strategy is to identify polar molecules that possess bistable states, moderate switching barriers, and polarizations fixed along the vertical direction for high-density perpendicular recording. First-principles computation shows that several selected magnetic metal porphyrin molecules possess buckled structures with switchable vertical polarizations that are robust at ambient conditions. When intercalated within a bilayer of 2D materials such as bilayer MoS

SUBMITTER: Yang Q 

PROVIDER: S-EPMC6325569 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature