Heat Capacity Reveals the Physics of a Frustrated Spin Tube

Ivanov, Nedko; Schnack, Jürgen; Schnalle, Roman; Richter, Johannes; Koegerler, Paul; Newton, Graham N.; Cronin, Leroy; Oshima, Yugo; Nojiri, Hiroyuki

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): 37206.

Zeitschriftenaufsatz | Veröffentlicht | Englisch

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DOI

https://doi.org/10.1103/PhysRevLett.105.037206

Autor*in

Ivanov, Nedko^UniBi; Schnack, Jürgen^UniBi ; Schnalle, Roman^UniBi; Richter, Johannes; Koegerler, Paul; Newton, Graham N.; Cronin, Leroy; Oshima, Yugo; Nojiri, Hiroyuki

Einrichtung

Fakultät für Physik > AG Theorie der Kondensierten Materie

Abstract / Bemerkung

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.

Erscheinungsjahr

2010

Zeitschriftentitel

Physical Review Letters

Band

105

Ausgabe

Art.-Nr.

37206

ISSN

0031-9007

eISSN

1079-7114

Page URI

https://pub.uni-bielefeld.de/record/1794907

Zitieren

Ivanov N, Schnack J, Schnalle R, et al. Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters. 2010;105(3): 37206.

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), 37206. https://doi.org/10.1103/PhysRevLett.105.037206

Ivanov, Nedko, Schnack, Jürgen, Schnalle, Roman, Richter, Johannes, Koegerler, Paul, Newton, Graham N., Cronin, Leroy, Oshima, Yugo, and Nojiri, Hiroyuki. 2010. “Heat Capacity Reveals the Physics of a Frustrated Spin Tube”. Physical Review Letters 105 (3): 37206.

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 105:37206.

Ivanov, N., et al., 2010. Heat Capacity Reveals the Physics of a Frustrated Spin Tube. Physical Review Letters, 105(3): 37206.

N. Ivanov, et al., “Heat Capacity Reveals the Physics of a Frustrated Spin Tube”, Physical Review Letters, vol. 105, 2010, : 37206.

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, : 37206 (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): 37206.