Journal
PHYSICAL REVIEW B
Volume 78, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.174420
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Funding
- National Science Foundation [PHY05-51164]
- Swiss National Science Foundation
- David and Lucile Packard Foundation
- NSF [DMR04-57440]
- Direct For Mathematical & Physical Scien [0804564] Funding Source: National Science Foundation
- Division Of Materials Research [0804564] Funding Source: National Science Foundation
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We study the quasi-one-dimensional limit of the spin-1/2 quantum Heisenberg antiferromagnet on the kagome lattice. The lattice is divided into antiferromagnetic spin chains (exchange J) that are weakly coupled via intermediate dangling spins (exchange J(')). Using one-dimensional bosonization, renormalization-group methods, and current algebra techniques, the ground state is determined in the limit J(')< J. We find that the dangling spins and chain spins form a spiral with O(1) and O(J(')/J) static moments, respectively, atop of which the chain spins exhibit a smaller O[(J(')/J)(2)] antiferromagnetically ordered component along the axis perpendicular to the spiral plane.
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