Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice
Abstract
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.
- Authors:
-
- Univ. of Missouri, Columbia, MO (United States)
- Publication Date:
- Research Org.:
- Univ. of Missouri, Columbia, MO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1503631
- Alternate Identifier(s):
- OSTI ID: 1420018
- Grant/Contract Number:
- SC0014461
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 112; Journal Issue: 6; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Dahal, A., Summers, B., and Singh, D. K. Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice. United States: N. p., 2018.
Web. doi:10.1063/1.5017816.
Dahal, A., Summers, B., & Singh, D. K. Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice. United States. https://doi.org/10.1063/1.5017816
Dahal, A., Summers, B., and Singh, D. K. Fri .
"Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice". United States. https://doi.org/10.1063/1.5017816. https://www.osti.gov/servlets/purl/1503631.
@article{osti_1503631,
title = {Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice},
author = {Dahal, A. and Summers, B. and Singh, D. K.},
abstractNote = {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.},
doi = {10.1063/1.5017816},
journal = {Applied Physics Letters},
number = 6,
volume = 112,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2018},
month = {Fri Feb 09 00:00:00 EST 2018}
}
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FIG. 1: Moment configuration. (a) Schematic of two-in and 1-out moment configurations on a honeycomb lattice vertex. Here, two moments are pointing to the vertex and one point is pointing away from the vertex. (b) All-in moment configuration where all three moments are pointing to the vertex. (c) The scanningmore »
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