An international group of physicists led by the University of Arkansas has created an artificial graphene-like structure with transition metal atoms in place of carbon atoms. The U of A-led group published its findings in Physical Review Letters.
Graphene, discovered in 2004, is a one-atom-thick sheet of graphite. Graphene transistors are predicted to be substantially faster and more heat tolerant than today’s silicon transistors and may result in more efficient computers and the next-generation of flexible electronics. Its discoverers were awarded the Nobel Prize in physics in 2010.
This discovery gives us the ability to create graphene-like structures for many other elements.—Srimanta Middey, a postdoctoral research associate at the U of A who led the study
The research group also included U of A postdoctoral research associates Michael Kareev and Yanwei Cao, doctoral student Xiaoran Liu and recent doctoral graduate Derek Meyers, now at Brookhaven National Laboratory.
Additional members of the group were David Doennig of the University of Munich, Rossitza Pentcheva of the University of Duisburg-Essen in Germany, Zhenzhong Yang, Jinan Shi and Lin Gu of the Chinese Academy of Sciences; and John W. Freeland and Phillip Ryan of the Advanced Photon Source at Argonne National Laboratory near Chicago.
The research was also partially funded by the Chinese Academy of Sciences.
Middey, S. and Meyers, D. and Doennig, D. and Kareev, M. and Liu, X. and Cao, Y. and Yang, Zhenzhong and Shi, Jinan and Gu, Lin and Ryan, P. J. and Pentcheva, R. and Freeland, J. W. and Chakhalian, J. (2016) “Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate” Phys Rev Lett doi: 10.1103/PhysRevLett.116.056801