Electric-field control of ferromagnetism

H. Ohno, Daichi Chiba, F. Matsukura, T. Omiya, E. Abe, T. Dietl, Y. Ohno, K. Ohtani

Research output: Contribution to journalArticlepeer-review

1915 Citations (Scopus)


It is often assumed that it is not possible to alter the properties of magnetic materials once they have been prepared and put into use. For example, although magnetic materials are used in information technology to store trillions of bits (in the form of magnetization directions established by applying external magnetic fields), the properties of the magnetic medium itself remain unchanged on magnetization reversal. The ability to externally control the properties of magnetic materials would be highly desirable from fundamental and technological viewpoints, particularly in view of recent developments in magnetoelectronics and spintronics1,2. In semiconductors, the conductivity can be varied by applying an electric field, but the electrical manipulation of magnetism has proved elusive. Here we demonstrate electric-field control of ferromagnetism in a thin-film semiconducting alloy, using an insulating-gate field-effect transistor structure. By applying electric fields, we are able to vary isothermally and reversibly the transition temperature of hole-induced ferromagnetism.

Original languageEnglish
Pages (from-to)944-946
Number of pages3
Issue number6815
Publication statusPublished - 2000 Dec 21


Dive into the research topics of 'Electric-field control of ferromagnetism'. Together they form a unique fingerprint.

Cite this