Frontier of Quantum Molecular Spintronics Based on Single-Molecule Quantum Magnets

Abstract

Spintronics is a key technology in 21^st century based on the freedoms of the charge, spin, as well as orbital of the electron. Usually in these systems, the bulk or classical magnets composed of the transition metals are used. However, according to Mooreʼs rule, the classical or bulk magnets have a limitation to minimize the magnets into nano-sizes. On the other hand, in our study we will use Single-Molecule Quantum Magnets (SMMs), which behave as nano-sized magnets and are considered as new magnets in this century. In this review, I will focus on the new quantum molecular spintronics by using SMMs as follows;1) Single-molecule memory by Kondo peaks, 2) Field effect transistor (FET), 3) Giant magnetoresistance (TMR, ~200 %), 4) Tunneling magnetoresistance (TMR) with double butterflies.