%0 Journal Article %1 PhysRevB.101.020411 %A Dey, Santanu %A Andrade, Eric C. %A Vojta, Matthias %D 2020 %I American Physical Society %J Phys. Rev. B %K a b %N 2 %P 020411 %R 10.1103/PhysRevB.101.020411 %T Destruction of long-range order in noncollinear two-dimensional antiferromagnets by random-bond disorder %U https://link.aps.org/doi/10.1103/PhysRevB.101.020411 %V 101 %X We consider frustrated Heisenberg antiferromagnets, whose clean-limit ground state is characterized by noncollinear long-range order with nonzero vector chirality, and study the effects of quenched bond disorder, i.e., random exchange couplings. A single bond defect is known to induce a dipolar texture in the spin background independent of microscopic details. Using general analytical arguments as well as large-scale simulations for the classical triangular-lattice Heisenberg model, we show that any finite concentration of such defects destroys long-range order for spatial dimension d≤2, in favor of a glassy state whose correlation length in d=2 is exponentially large for small randomness. Our results are relevant for a wide range of layered frustrated magnets.

@article{PhysRevB.101.020411, abstract = {We consider frustrated Heisenberg antiferromagnets, whose clean-limit ground state is characterized by noncollinear long-range order with nonzero vector chirality, and study the effects of quenched bond disorder, i.e., random exchange couplings. A single bond defect is known to induce a dipolar texture in the spin background independent of microscopic details. Using general analytical arguments as well as large-scale simulations for the classical triangular-lattice Heisenberg model, we show that any finite concentration of such defects destroys long-range order for spatial dimension d≤2, in favor of a glassy state whose correlation length in d=2 is exponentially large for small randomness. Our results are relevant for a wide range of layered frustrated magnets.}, added-at = {2020-03-20T11:56:45.000+0100}, author = {Dey, Santanu and Andrade, Eric C. and Vojta, Matthias}, biburl = {https://www.bibsonomy.org/bibtex/21e6b238fde2f49ce33b8d1e0482d1196/ctqmat}, day = 22, description = {Phys. Rev. B 101, 020411(R) (2020) - Destruction of long-range order in noncollinear two-dimensional antiferromagnets by random-bond disorder}, doi = {10.1103/PhysRevB.101.020411}, interhash = {3edf6fff99ed9faa0da280e062b2054d}, intrahash = {1e6b238fde2f49ce33b8d1e0482d1196}, journal = {Phys. Rev. B}, keywords = {a b}, month = {01}, number = 2, numpages = {5}, pages = 020411, publisher = {American Physical Society}, timestamp = {2023-01-16T14:49:29.000+0100}, title = {Destruction of long-range order in noncollinear two-dimensional antiferromagnets by random-bond disorder}, url = {https://link.aps.org/doi/10.1103/PhysRevB.101.020411}, volume = 101, year = 2020 }