Magnetic properties of the S = 1/2 Heisenberg spin-chain material (6MAP)CuCl3


Magnetic properties of the S = 1/2 Heisenberg spin-chain material (6MAP)CuCl3

Ozerov, M.; Cizmar, E.; Wosnitza, J.; Zvyagin, S. A.; Xiao, F.; Landee, C. P.; Turnbull, M. M.

Magnetic properties of the S = 1/2 Heisenberg spin-chain material (6MAP)CuCl3 have been probed by means of magnetization, specific-heat and electron spin resonance (ESR) measurements. A pronounced low-temperature Curie-like tail in the magnetic susceptibility was found at low temperatures. As recently suggested, such a behavior could originate from staggered magnetization effects, responsible also for the field-induced gap opening in S = 1/2 chains with broken translational symmetry. We found a clear anomaly in the specific heat having a broad maximum at Tmax = 2.3 K, accompanied by a significant ESR line broadening and g-factor shift. The specific-heat anomaly is magnetic-field independent, indicating that its origin is not related to the field-induced transverse staggered magnetization effects

  • Open Access Logo Journal of Physics: Conference Series 150(2009), 042159

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Publ.-Id: 12662