Michael Crommie

Michael Felix Crommie (* 1961 ) is an American physicist and nanoscientist .

Crommie graduated from the University of California, Los Angeles with a bachelor's degree in physics in 1984 and received a PhD from the University of California, Berkeley in 1991 . As a post-doctoral student , he spent two years at the IBM Almaden Research Center. In 1994 he became an assistant professor at Boston University and in 1999 became an associate professor and later professor at the University of California, Berkeley.

In 1993 he and Donald M. Eigler demonstrated the quantum chaos phenomenon of the Quantum Corral .

He deals with the construction of nanostructures of atoms and molecules using atomic force microscopy . Among other things, he and his group succeeded in doping a single fullerene molecule with individual atoms in carbon nanostructures and the first energy-resolved image of a single fullerene ball and the first atomically resolved spectroscopic investigation of a single-atom graphene layer. In his group, he also investigated magnetic nanostructures (spin-based nanostructures) such as a single Kondo impurity and the first spin-polarized measurement of a single magnetic adatom in a molecule. His group is concerned with the bottom up construction of molecular machines and photovoltaic elements.

With Felix R. Fischer at the University of Berkeley in 2013, Crommie made the first direct recording of how an organic molecule changes in a reaction. Phenol rings linked via carbon atoms with triple bonds (ethyne) were the starting molecule; After heating, the molecules condensed into different interconnected ring structures made up of five and six rings, which could also be displayed. They used a technique of scanning tunneling microscopy by Gerhard Meyer and Leo Gross , in which an organic molecule sits at the tip of the probe.

Crommie received a National Science Foundation Young Investigator Award in 1994, the AAAS Newcomb Cleveland Prize in 1993/94, and a 1997 Sloan Research Fellow .

Fonts (selection)

• with CP Lutz, Donald M. Eigler: Confinement of electrons to quantum corrals on a metal surface , Science, Volume 262, 1993, p. 218.
• with V. Madhavan, W. Chen, T. Jamneala, NS Wingreen: Tunneling into a single magnetic atom: Spectroscopic evidence of the Kondo resonance , Science, Volume 280, 1998, p. 567
• with T. Jamneala, V. Madhavan: Kondo Response of a Single Antiferromagnetic Trimer , Phys. Rev. Lett., Vol. 87, 2001, p. 256804
• with Xinghua Lu, M. Grobis, KH Khoo, SG Louie: Spatially Mapping the Spectral Density of a Single C60 Molecule , Phys. Rev. Lett., Vol. 90, 2003, p. 096802
• with Z. Nussinov, AV Balatsky: Noise Spectroscopy of a Single Spin with Spin-Polarized Scanning Tunneling Microscopy , Phys. Rev. B, Volume 68, 2003, p. 085402
• with R. Yamachika, M. Grobis, A. Wachowiak: Controlled atomic doping of a single C60 molecule , Science, Volume 304, 2004, p. 281.
• with A. Wachowiak u. a .: Direct Visualization of the Molecular Jahn-Teller Effect in an Insulating K4C60 Monolayer , Science, Volume 310, 2005, p. 468
• with M. Grobis u. a .: Spatially Dependent Inelastic Tunneling in a Single Metallofullerene , Phys. Rev. Lett., Volume 94, 2005, p. 136802
• with MJ Comstock a. a .: Reversible photomechanical switching of individual engineered molecules at a surface , Phys. Rev. Lett., Vol. 99, 2007, p. 038301, PMID 17678335
• with Y. Yayon u. a .: Observing Spin Polarization of Individual Magnetic Adatoms , Phys. Rev. Lett., Vol. 99, 2007, p. 067202
• with VW Brar u. a .: Scanning tunneling spectroscopy of inhomogeneous electronic structure in monolayer and bilayer graphene on SiC , Appl. Phys. Lett., Vol. 91, 2007, p. 122102, Arxiv

Web links

• Homepage in Berkeley
• Physics Tree , publications

Individual evidence

1. ↑ Crommie, Fisch u. a .: Direct Imaging of Covalent Bond Structure in Single-Molecule Chemical Reactions, Science, Volume 340, 2013, p.