Carbon-based Superconductors (PDF)

Junji Haruyama is professor of materials science at the Faculty of Science and Technology, Aoyama Gakuin University, Japan. He graduated from Waseda University, Tokyo, Japan, in 1985, after which he joined NEC Corporation, Japan. He received his PhD in physics from Waseda University in 1996. During 1995-1997, he worked with the University of Toronto, Canada, and Ontario Laser and Lightwave Research Center, Canada, as a visiting scientist. Then he was a visiting professor at NTT Basic Research Laboratories, Japan, and the Institute for Solid State Physics, the University of Tokyo, Japan. Currently, he is also a principal researcher for a grant by the Air Force Office of Scientific Research, USA, for a project on carbon-based high-Tc superconductivity. Prof. Haruyama has discovered the world's highest Tc and one-dimensional superconductivity in two different types of carbon nanotubes (CNTs); large energy bandgaps in CNT-derived graphene nanoribbons; spontaneous spin polarization at graphene edges (flat-band ferromagnetism) and its application to rare-metal-free TMR device; and spin-orbit-interaction induced spin coherence in hydrogenated graphene. He has authored over 30 books and over 100 peer-reviewed articles in international journals, including Physical Review Letters and Nature Nanotechnology. He has been honored with many grants by the Japan Science and Technology agency, the Japan Society for the Promotion of Science, and the Ministry of Education, Culture, Sports, Science and Technology of Japan. His main research interest is the study of quantum phenomena (e.g., low-dimensional electron correlation, spintronics, superconductivity, single electron tunneling, and quantum [information] devices) in nanomaterials such as graphene (mono-atomic layer materials), CNTs, nanowires, and compound semiconductors, and their applications to novel quantum devices.