Observation of spectral evolution during the formation of a Ni2 Kondo molecule

Phys. Rev. B 66, 212411 – Published 30 December 2002
V. Madhavan, T. Jamneala, K. Nagaoka, W. Chen, Je-Luen Li, Steven G. Louie, and M. F. Crommie

Abstract

We have used atomic manipulation and scanning tunneling spectroscopy to study the evolution in electronic properties that occurs as two Ni atoms are merged into a single magnetic molecule on Au(111). We observe energetic shifting of molecular d-orbitals and a strong decrease in the molecular Kondo temperature as Ni-Ni separation is reduced to 3.4±0.3 Å. These results are qualitatively explained by a combination of a spin-12 s-d model and density-functional calculations.

DOI: http://dx.doi.org/10.1103/PhysRevB.66.212411

  • Received 7 May 2002
  • Published 30 December 2002

© 2002 The American Physical Society

Authors & Affiliations

V. Madhavan, T. Jamneala, K. Nagaoka, W. Chen*, Je-Luen Li, Steven G. Louie, and M. F. Crommie

  • Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300
  • Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720-7300

  • *Present address: Condensed Matter Physics, Caltech 114-36, Pasadena, California 91125.

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