Spiral spin liquids are correlated states of matter in which a frustrated magnetic system evades order by fluctuating between a set of (nearly) degenerate spin spirals. Here, we investigate the response of spiral spin liquids to quenched disorder in a J1−J2 honeycomb-lattice Heisenberg model. At the single-impurity level, we identify different order-by-quenched-disorder mechanisms and analyze the ensuing spin textures. In particular, we show that the latter generally display Friedel-like oscillations, which encode direct information about the spiral contour, i.e., the classical ground-state manifold. At finite defect concentrations, we perform extensive numerical simulations and characterize the resulting phases at zero temperature. As a result, we find that the competition between incompatible order-by-quenched-disorder mechanisms can lead to spiral spin glass states already at low to moderate disorder. Finally, we discuss extensions of our conclusions to nonzero temperatures and higher-dimensional systems, as well as their applications to experiments.
%0 Journal Article
%1 PhysRevB.109.064423
%A Cônsoli, Pedro M.
%A Vojta, Matthias
%D 2024
%I American Physical Society
%J Phys. Rev. B
%K b
%N 6
%P 064423
%R 10.1103/PhysRevB.109.064423
%T Disorder effects in spiral spin liquids: Long-range spin textures, Friedel-like oscillations, and spiral spin glasses
%U https://link.aps.org/doi/10.1103/PhysRevB.109.064423
%V 109
%X Spiral spin liquids are correlated states of matter in which a frustrated magnetic system evades order by fluctuating between a set of (nearly) degenerate spin spirals. Here, we investigate the response of spiral spin liquids to quenched disorder in a J1−J2 honeycomb-lattice Heisenberg model. At the single-impurity level, we identify different order-by-quenched-disorder mechanisms and analyze the ensuing spin textures. In particular, we show that the latter generally display Friedel-like oscillations, which encode direct information about the spiral contour, i.e., the classical ground-state manifold. At finite defect concentrations, we perform extensive numerical simulations and characterize the resulting phases at zero temperature. As a result, we find that the competition between incompatible order-by-quenched-disorder mechanisms can lead to spiral spin glass states already at low to moderate disorder. Finally, we discuss extensions of our conclusions to nonzero temperatures and higher-dimensional systems, as well as their applications to experiments.
@article{PhysRevB.109.064423,
abstract = {Spiral spin liquids are correlated states of matter in which a frustrated magnetic system evades order by fluctuating between a set of (nearly) degenerate spin spirals. Here, we investigate the response of spiral spin liquids to quenched disorder in a J1−J2 honeycomb-lattice Heisenberg model. At the single-impurity level, we identify different order-by-quenched-disorder mechanisms and analyze the ensuing spin textures. In particular, we show that the latter generally display Friedel-like oscillations, which encode direct information about the spiral contour, i.e., the classical ground-state manifold. At finite defect concentrations, we perform extensive numerical simulations and characterize the resulting phases at zero temperature. As a result, we find that the competition between incompatible order-by-quenched-disorder mechanisms can lead to spiral spin glass states already at low to moderate disorder. Finally, we discuss extensions of our conclusions to nonzero temperatures and higher-dimensional systems, as well as their applications to experiments.},
added-at = {2024-02-27T20:49:28.000+0100},
author = {C\^onsoli, Pedro M. and Vojta, Matthias},
biburl = {https://www.bibsonomy.org/bibtex/21250cdb688aaade351b283d76ccc2080/ctqmat},
day = 26,
doi = {10.1103/PhysRevB.109.064423},
interhash = {7599c05b5c6d7e703df22108a365cc8e},
intrahash = {1250cdb688aaade351b283d76ccc2080},
journal = {Phys. Rev. B},
keywords = {b},
month = {02},
number = 6,
numpages = {25},
pages = 064423,
publisher = {American Physical Society},
timestamp = {2024-02-27T20:49:28.000+0100},
title = {Disorder effects in spiral spin liquids: Long-range spin textures, Friedel-like oscillations, and spiral spin glasses},
url = {https://link.aps.org/doi/10.1103/PhysRevB.109.064423},
volume = 109,
year = 2024
}