Magnetism of Cu_6 Ge_6 O_{18}-x H_2 O (x = 0 ~ 6), a compound of the one-dimensional Heisenberg $S = 1/2$ model with competing antiferromagnetic interactions
| dc.creator | Hase, Masashi | |
| dc.creator | Ozawa, Kiyoshi | |
| dc.creator | Shinya, Norio | |
| dc.date | 2003-04-15 | |
| dc.date.accessioned | 2026-07-07T02:50:46Z | |
| dc.date.available | 2026-07-07T02:50:46Z | |
| dc.description | We measured the magnetic susceptibilities of Cu$_6$Ge$_6$O$_{18}$-xH$_2$O ($x = 0 \sim 6$). Susceptibility above the antiferromagnetic (AF) transition temperature ($T_{\rm N}$) agrees with susceptibility of the one-dimensional Heisenberg $S = 1/2$ model with competing AF interactions. From the estimated ratio between nearest-neighbor and next-nearest-neighbor AF exchange interactions, the spin system is probably located near a boundary between spin systems with gapless and gapped magnetic excitation. The value of $T_{\rm N}/T_{\rm max}$, where $T_{\rm max}$ is temperature at which the susceptibility is maximum, shows a unique dependence on $x$. The $x$ dependence can be explained qualitatively by taking phase transition as a function of $x$ and the effect of disorder into account. | |
| dc.description | 4 pages, 4 figures, 1 table. submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0304323 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0304323 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/21222 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Magnetism of Cu_6 Ge_6 O_{18}-x H_2 O (x = 0 ~ 6), a compound of the one-dimensional Heisenberg $S = 1/2$ model with competing antiferromagnetic interactions | |
| dc.type | text |