Recently, Dr. Hao Hua and the supervisor of Ph.D. Pheasant Zeng Ph. The existence has an important influence on the mechanism of the electrostatic field causing the spin change. How to use physical means to achieve spin crossover in nanometer size has always been the focus of attention. Researchers have discovered that this type of spin change can be achieved by external disturbances such as temperature, pressure, light exposure, and magnetic fields. For actual micro-nano electronic devices, it is even more challenging whether the spin change in the nanometer size can be achieved by only applying an external electric field. If this method of electro-spin change is achieved, it will provide a good development platform for molecular-based quantum computing, and it is also an important advancement in the field of molecular spintronics. For isolated Fe2 molecules, the effect of the electrostatic field cannot make it spin-rotate [M. Diefenbach & KS Kim, Angew. Chem. Int. Ed 46,7640 (2007); N. Baadji et al., Nature Materials 8, 813 (2009)]. However, the research of Dr. Hao Hua and Zeng Pheasant ’s research shows that when the Fe2 molecule is in a “junction†environment, the metal electrode affects the molecule ’s inherent electric dipole moment and the electronic state ’s response to the external electric field, which makes The Fe2 molecule undergoes spin change. It can be seen that even if an isolated molecule cannot achieve electro-induced spin change under the action of an electrostatic field, the presence of an electrode is entirely possible to achieve the electro-induced spin change based on the molecule. Related work results were published in the first issue of "Physical Review Letter" in 2012 (Electrostatic spin crossover in a molecular junction of a single-molecule magnet Fe2 [Phys. Rev. Lett. 108, 017202 (2012)]). Figure 1 (a) Isolated Fe2 molecule; (b) Molecular junction of Fe2 molecule and Au (100) nanoelectrode Figure 2 (a) The total energy of the molecular junction changes with the applied bias voltage. The dotted box is the region where the electro-spin change occurs; (b) The effective exchange constant changes with the applied bias voltage; (c) The Fe- Schematic diagram of changes in the magnetic coupling state between Fe. Fig.3 The related explanation of the physical mechanism of spin-induced spin change in Fe2 molecular junction Beach Rackets ,Beach Tennis Rackets,Beach Tennis Paddles,Beach Racket Ball Ningbo Sno Stationery & Sports Articles Co., Ltd. , https://www.snoflyingdisc.com
