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Title: Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5017816· OSTI ID:1503631
 [1];  [1];  [1]
  1. Univ. of Missouri, Columbia, MO (United States)

Two-dimensional artificial magnetic honeycomb lattices are at the forefront of research on unconventional magnetic materials. Among the many emergent magnetic phases that are predicted to arise as a function of temperature, the low temperature spin solid phase with zero magnetization and entropy is of special importance. Here, we report an interesting perspective to the consequence of spin solid order in an artificial honeycomb lattice of ultra-small connected elements using electrical dimensionality analysis. At low temperature, T ≤ 30 K, the system exhibits a very strong insulating characteristic. The electrical dimensionality analysis of the experimental data reveals a fractional dimensionality of d = 0.6(0.04) in the spin solid phase of honeycomb lattice at low temperature. The much smaller electrical dimension in the spin solid phase, perhaps, underscores the strong insulating behavior in this system. Furthermore, the fractional dimensionality in an otherwise two-dimensional system suggests a non-surface-like electrical transport at low temperature in an artificial honeycomb lattice.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0014461
OSTI ID:
1503631
Alternate ID(s):
OSTI ID: 1420018
Journal Information:
Applied Physics Letters, Vol. 112, Issue 6; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)


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