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Title: Understanding magnetotransport signatures in networks of connected permalloy nanowires

Journal Article · · Physical Review B
 [1];  [1];  [1];  [2];  [3];  [4];  [4];  [5];  [5];  [4];  [1]
  1. Univ. of Illinois, Urbana, IL (United States). Dept. of Physics. Frederick Seitz Materials Research Lab.
  2. Univ. of Virginia, Charlottesville, VA (United States). Dept. of Physics
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Chemical Engineering and Materials Science
  5. Pennsylvania State Univ., University Park, PA (United States). Dept. of Physics. Materials Research Inst.

The change in electrical resistance associated with the application of an external magnetic field is known as the magnetoresistance (MR). The measured MR is quite complex in the class of connected networks of single-domain ferromagnetic nanowires, known as “artificial spin ice,” due to the geometrically induced collective behavior of the nanowire moments. Here, we have conducted a thorough experimental study of the MR of a connected honeycomb artificial spin ice, and we present a simulation methodology for understanding the detailed behavior of this complex correlated magnetic system. Finally, our results demonstrate that the behavior, even at low magnetic fields, can be well described only by including significant contributions from the vertices at which the legs meet, opening the door to new geometrically induced MR phenomena.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Illinois at Urbana-Champaign, IL (United States); Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC52-06NA25396; SC0010778; DMR-1420013; DMR-1507048
OSTI ID:
1480009
Alternate ID(s):
OSTI ID: 1343335
Report Number(s):
LA-UR-18-29680
Journal Information:
Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (6)

Emergent dynamic chirality in a thermally driven artificial spin ratchet journal October 2017
Advances in artificial spin ice journal November 2019
Magnetization dynamics in artificial spin ice journal October 2019
Magnetization reversal in kagome artificial spin ice studied by first-order reversal curves journal October 2017
Magnetization reversal in Kagome artificial spin ice studied by first-order reversal curves text January 2017
High frequency dynamics modulated by collective magnetization reversal in artificial spin ice text January 2017