Heat Capacity Reveals the Physics of a Frustrated Spin Tube

Ivanov N, Schnack J, Schnalle R, Richter J, Koegerler P, Newton GN, Cronin L, Oshima Y, Nojiri H (2010)
Physical Review Letters 105(3): 037206.

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We report on theoretical and experimental results concerning the low-temperature specific heat of the frustrated spin-tube material [(CuCl(2)tachH)(3)Cl]Cl-2 (tach denotes 1,3,5-triaminocyclohexane). This substance turns out to be an unusually perfect spin-tube system which allows to study the physics of quasione- dimensional antiferromagnetic structures in rather general terms. An analysis of the specific-heat data demonstrates that at low enough temperatures the system exhibits a Tomonaga-Luttinger liquid behavior corresponding to an effective spin-3/2 antiferromagnetic Heisenberg chain with short-range exchange interactions. On the other hand, around 2 K the composite spin structure of the chain is revealed through a Schottky-type peak in the specific heat. We argue that the dominating contribution to the peak originates from gapped magnon-type excitations related to the internal degrees of freedom of the rung spins.
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Ivanov N, Schnack J, Schnalle R, et al. Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters. 2010;105(3): 037206.
Ivanov, N., Schnack, J., Schnalle, R., Richter, J., Koegerler, P., Newton, G. N., Cronin, L., et al. (2010). Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters, 105(3): 037206.
Ivanov, N., Schnack, J., Schnalle, R., Richter, J., Koegerler, P., Newton, G. N., Cronin, L., Oshima, Y., and Nojiri, H. (2010). Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters 105: 037206.
Ivanov, N., et al., 2010. Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters, 105(3): 037206.
N. Ivanov, et al., “Heat Capacity Reveals the Physics of a Frustrated Spin Tube”, Physical Review Letters, vol. 105, 2010, : 037206.
Ivanov, N., Schnack, J., Schnalle, R., Richter, J., Koegerler, P., Newton, G.N., Cronin, L., Oshima, Y., Nojiri, H.: Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters. 105, : 037206 (2010).
Ivanov, Nedko, Schnack, Jürgen, Schnalle, Roman, Richter, Johannes, Koegerler, Paul, Newton, Graham N., Cronin, Leroy, Oshima, Yugo, and Nojiri, Hiroyuki. “Heat Capacity Reveals the Physics of a Frustrated Spin Tube”. Physical Review Letters 105.3 (2010): 037206.
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PMID: 20867802
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