Quantum Versus Classical Behavior in the Boundary Susceptibility of the Ferromagnetic Heisenberg Chain
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Bortz, Michael
Sirker, Jesko
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American Physical Society
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We calculate the temperature dependence of the boundary susceptibility χB for the quantum ferromagnetic Heisenberg chain by a modified spin-wave theory (MSWT). We find that χB diverges at low temperatures ∼- T-3 and therefore more rapidly and with opp
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Physical Review B: Condensed Matter and Materials
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2037-12-31
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