Geometrothermodynamics in planar artificial spin ices
Abstract
In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin ices (ASI). In general, such artificial materials are athermal. Here, We demonstrate that geometrically driven dynamics in ASI can open up the panorama of exploring distinct ground states and thermally magnetic monopole excitations. It is shown that a particular ASI lattice will provide a richer thermodynamics with nanomagnet spins experiencing less restriction to flip precisely in a kind of rhombic lattice. This can be observed by analysis of only three types of rectangular artificial spin ices (RASI). Denoting the horizontal and vertical lattice spacings by $$a$$ and $$b$$, respectively, then, a RASI material can be described by its aspect ratio $$γ \equiv a/b$$ . The rhombic lattice emerges when $$γ = \sqrt{3}$$. So, by comparing the impact of thermal effects on the spin flips in these three appropriate different RASI arrays, it is possible to find a system very close to the ice regime.
- Authors:
-
- Univ. Federal de Vicosa (Brazil)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. Federal de Ouro Preto (Brazil)
- International Iberian Nanotechnology Lab. (Portugal)
- Lab. Nacional de Luz Sincrotron (Brazil)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1601390
- Report Number(s):
- LA-UR-17-29335
Journal ID: ISSN 0953-8984; TRN: US2103632
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. Condensed Matter
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 2; Journal ID: ISSN 0953-8984
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Loreto, PR, Nisoli, Cristiano, Nascimento, FS, Borme, J, Cezar, JC, Pereira, AR, and Araujo, CIL. Geometrothermodynamics in planar artificial spin ices. United States: N. p., 2019.
Web. doi:10.1088/1361-648X/aaeeef.
Loreto, PR, Nisoli, Cristiano, Nascimento, FS, Borme, J, Cezar, JC, Pereira, AR, & Araujo, CIL. Geometrothermodynamics in planar artificial spin ices. United States. https://doi.org/10.1088/1361-648X/aaeeef
Loreto, PR, Nisoli, Cristiano, Nascimento, FS, Borme, J, Cezar, JC, Pereira, AR, and Araujo, CIL. Wed .
"Geometrothermodynamics in planar artificial spin ices". United States. https://doi.org/10.1088/1361-648X/aaeeef. https://www.osti.gov/servlets/purl/1601390.
@article{osti_1601390,
title = {Geometrothermodynamics in planar artificial spin ices},
author = {Loreto, PR and Nisoli, Cristiano and Nascimento, FS and Borme, J and Cezar, JC and Pereira, AR and Araujo, CIL},
abstractNote = {In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin ices (ASI). In general, such artificial materials are athermal. Here, We demonstrate that geometrically driven dynamics in ASI can open up the panorama of exploring distinct ground states and thermally magnetic monopole excitations. It is shown that a particular ASI lattice will provide a richer thermodynamics with nanomagnet spins experiencing less restriction to flip precisely in a kind of rhombic lattice. This can be observed by analysis of only three types of rectangular artificial spin ices (RASI). Denoting the horizontal and vertical lattice spacings by $a$ and $b$, respectively, then, a RASI material can be described by its aspect ratio $γ \equiv a/b$ . The rhombic lattice emerges when $γ = \sqrt{3}$. So, by comparing the impact of thermal effects on the spin flips in these three appropriate different RASI arrays, it is possible to find a system very close to the ice regime.},
doi = {10.1088/1361-648X/aaeeef},
journal = {Journal of Physics. Condensed Matter},
number = 2,
volume = 31,
place = {United States},
year = {Wed Jan 16 00:00:00 EST 2019},
month = {Wed Jan 16 00:00:00 EST 2019}
}
Web of Science
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Works referencing / citing this record:
Dipolar Cairo lattice: Geometrical frustration and short-range correlations
journal, October 2019
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- Physical Review Materials, Vol. 3, Issue 10
Advances in artificial spin ice
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Tuning magnetic monopole population and mobility in unidirectional array of nanomagnets as a function of lattice parameters
journal, April 2019
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