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Experimental observation of spin-exchange-induced dimerization of an atomic one-dimensional system

Nader Zaki, Chris A. Marianetti, Danda P. Acharya, Percy Zahl, Peter Sutter, Junichi Okamoto, Peter D. Johnson, Andrew J. Millis, and Richard M. Osgood
Phys. Rev. B 87, 161406(R) – Published 18 April 2013
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Abstract

Using low-temperature scanning tunneling microscopy, we demonstrate a one-dimensional system that undergoes a charge-density-wave (CDW) instability on a metallic substrate. For our measurements we utilize a self-assembled monatomic chain of Co atoms aligned by the steps on a vicinal Cu(111) surface. We assign the measured CDW instability to ferromagnetic interactions along the chain. We show that though the linear arrayed dimers are not electronically isolated, they are magnetically independent, and hence can potentially serve as a binary spin-memory system.

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  • Received 23 August 2012

DOI:https://doi.org/10.1103/PhysRevB.87.161406

©2013 American Physical Society

Authors & Affiliations

Nader Zaki1,*, Chris A. Marianetti1, Danda P. Acharya2, Percy Zahl2, Peter Sutter2, Junichi Okamoto1, Peter D. Johnson3, Andrew J. Millis1, and Richard M. Osgood1,†

  • 1Columbia University, New York, New York 10027, USA
  • 2Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 3Condensed Matter Physics & Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA

  • *Corresponding author: nz2137@columbia.edu
  • Corresponding author: osgood@columbia.edu

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Issue

Vol. 87, Iss. 16 — 15 April 2013

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