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Title: Inner Phases of Colloidal Hexagonal Spin Ice

Abstract

Using numerical simulations that mimic recent experiments on hexagonal colloidal ice, here we show that colloidal hexagonal artificial spin ice exhibits an inner phase within its ice state that has not been observed previously. Under increasing colloid-colloid repulsion, the initially paramagnetic system crosses into a disordered ice regime, then forms a topologically charge ordered state with disordered colloids, and finally reaches a threefold degenerate, ordered ferromagnetic state. This is reminiscent of, yet distinct from, the inner phases of the magnetic kagome spin ice analog. Finally, the difference in the inner phases of the two systems is explained by their difference in energetics and frustration.

Authors:
 [1];  [2];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Babeş-Bolyai Univ., Cluj (Romania). Mathematics and Computer Science Dept.
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1480011
Alternate Identifier(s):
OSTI ID: 1416838; OSTI ID: 1514975
Report Number(s):
LA-UR-18-29684; LA-UR-17-27913
Journal ID: ISSN 0031-9007
Grant/Contract Number:  
AC52-06NA25396; 89233218CNA000001
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; phase transitions; spin ice; colloids; Material Science

Citation Formats

Libál, A., Nisoli, C., Reichhardt, C. J. O., and Reichhardt, C. Inner Phases of Colloidal Hexagonal Spin Ice. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.027204.
Libál, A., Nisoli, C., Reichhardt, C. J. O., & Reichhardt, C. Inner Phases of Colloidal Hexagonal Spin Ice. United States. doi:10.1103/PhysRevLett.120.027204.
Libál, A., Nisoli, C., Reichhardt, C. J. O., and Reichhardt, C. Fri . "Inner Phases of Colloidal Hexagonal Spin Ice". United States. doi:10.1103/PhysRevLett.120.027204. https://www.osti.gov/servlets/purl/1480011.
@article{osti_1480011,
title = {Inner Phases of Colloidal Hexagonal Spin Ice},
author = {Libál, A. and Nisoli, C. and Reichhardt, C. J. O. and Reichhardt, C.},
abstractNote = {Using numerical simulations that mimic recent experiments on hexagonal colloidal ice, here we show that colloidal hexagonal artificial spin ice exhibits an inner phase within its ice state that has not been observed previously. Under increasing colloid-colloid repulsion, the initially paramagnetic system crosses into a disordered ice regime, then forms a topologically charge ordered state with disordered colloids, and finally reaches a threefold degenerate, ordered ferromagnetic state. This is reminiscent of, yet distinct from, the inner phases of the magnetic kagome spin ice analog. Finally, the difference in the inner phases of the two systems is explained by their difference in energetics and frustration.},
doi = {10.1103/PhysRevLett.120.027204},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 2,
volume = 120,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 7 works
Citation information provided by
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Figures / Tables:

FIG. 1 FIG. 1: Schematic of the particle-based hexagonal artificial spin ice. Each double well trap (light grey) holds a single paramagnetic colloid (dark grey dots). The hexagonal plaquettes contain arrows indicating the pseudospin $\overrightarrow{σ}$i of the adjacent traps, colored according to the chirality χi = +1 (clockwise, dark grey) or χimore » = −1 (counter-clockwise, white). The plaquettes are colored according to their net spin chirality χ: clockwise (red), counter-clockwise (blue), or achiral (grey). Colored disks are guides to the eye and indicate the vertex type: n = 0 or 0-in (dark blue), n = 1 (light blue), n = 2 (light red), and n = 3 (dark red); arrows (of length 2) or dots (of length 0) on the disks indicate the vectorial sum $\overrightarrow{s}$i of the pseudospins adjacent to each vertex.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.