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Title: Magnetic order and energy-scale hierarchy in artificial spin-ice structures

Abstract

In order to explain and predict the properties of many physical systems, it is essential to understand the interplay of different energy scales. Here we present investigations of the magnetic order in thermalized artificial spin-ice structures, with different activation energies of the interacting Ising-like elements. We image the thermally equilibrated magnetic states of the nanostructures using synchrotron-based magnetic microscopy. By comparing results obtained from structures with one or two different activation energies, we demonstrate a clear impact on the resulting magnetic order. The differences are obtained by the analysis of the magnetic spin structure factors, in which the role of the activation energies is manifested by distinct short-range order. Furthermore, these results highlight the potential of artificial spin-ice structures to serve as model systems for designing various energy-scale hierarchies and investigating their impact on the collective dynamics and magnetic order.

Authors:
 [1];  [1];  [1];  [2];  [3];  [2]; ORCiD logo [4];  [1];  [1]
  1. Uppsala Univ., Uppsala (Sweden)
  2. Univ. of Warwick, Coventry (United Kingdom)
  3. Univ. of Iceland, Reykjavik (Iceland)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1487251
Alternate Identifier(s):
OSTI ID: 1462142
Report Number(s):
BNL-209751-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; artificial spin ice; nanomagnetism

Citation Formats

Stopfel, Henry, Östman, Erik, Chioar, Ioan -Augustin, Greving, David, Arnalds, Unnar B., Hase, Thomas P. A., Stein, Aaron, Hjörvarsson, Björgvin, and Kapaklis, Vassilios. Magnetic order and energy-scale hierarchy in artificial spin-ice structures. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.014435.
Stopfel, Henry, Östman, Erik, Chioar, Ioan -Augustin, Greving, David, Arnalds, Unnar B., Hase, Thomas P. A., Stein, Aaron, Hjörvarsson, Björgvin, & Kapaklis, Vassilios. Magnetic order and energy-scale hierarchy in artificial spin-ice structures. United States. doi:10.1103/PhysRevB.98.014435.
Stopfel, Henry, Östman, Erik, Chioar, Ioan -Augustin, Greving, David, Arnalds, Unnar B., Hase, Thomas P. A., Stein, Aaron, Hjörvarsson, Björgvin, and Kapaklis, Vassilios. Mon . "Magnetic order and energy-scale hierarchy in artificial spin-ice structures". United States. doi:10.1103/PhysRevB.98.014435. https://www.osti.gov/servlets/purl/1487251.
@article{osti_1487251,
title = {Magnetic order and energy-scale hierarchy in artificial spin-ice structures},
author = {Stopfel, Henry and Östman, Erik and Chioar, Ioan -Augustin and Greving, David and Arnalds, Unnar B. and Hase, Thomas P. A. and Stein, Aaron and Hjörvarsson, Björgvin and Kapaklis, Vassilios},
abstractNote = {In order to explain and predict the properties of many physical systems, it is essential to understand the interplay of different energy scales. Here we present investigations of the magnetic order in thermalized artificial spin-ice structures, with different activation energies of the interacting Ising-like elements. We image the thermally equilibrated magnetic states of the nanostructures using synchrotron-based magnetic microscopy. By comparing results obtained from structures with one or two different activation energies, we demonstrate a clear impact on the resulting magnetic order. The differences are obtained by the analysis of the magnetic spin structure factors, in which the role of the activation energies is manifested by distinct short-range order. Furthermore, these results highlight the potential of artificial spin-ice structures to serve as model systems for designing various energy-scale hierarchies and investigating their impact on the collective dynamics and magnetic order.},
doi = {10.1103/PhysRevB.98.014435},
journal = {Physical Review B},
number = 1,
volume = 98,
place = {United States},
year = {2018},
month = {7}
}

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    Works referencing / citing this record:

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    journal, June 2019


    Quasidegenerate ice manifold in a purely two-dimensional square array of nanomagnets
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