Skip to main content
eScholarship
Open Access Publications from the University of California

Dipolar Cairo lattice: Geometrical frustration and short-range correlations

  • Author(s): Saccone, M;
  • Hofhuis, K;
  • Huang, YL;
  • Dhuey, S;
  • Chen, Z;
  • Scholl, A;
  • Chopdekar, RV;
  • Van Dijken, S;
  • Farhan, A
  • et al.
Abstract

We have studied low-energy configurations in two-dimensional arrays consisting of Ising-type dipolar coupled nanomagnets lithographically defined onto a two-dimensional Cairo lattice, thus dubbed the dipolar Cairo lattice. Employing synchrotron-based photoemission electron microscopy (PEEM), we perform real-space imaging of moment configurations achieved after thermal annealing. These states are then characterized in terms of vertex populations, spin- and emergent magnetic charge correlations, and a topology-enforced emergent ice rule. The results reveal a strong dominance of short-range correlations and the absence of long-range order, reflecting the high degree of geometrical spin frustration present in this example of an artificial frustrated spin system.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View