Dilatometric studies on single crystalline barlowite – a structurally perfect spin-1/2 Kagome system
- We present results of high-resolution thermal expansion measurements on single crystalline barlowite – a structurally perfect spin-1/2 kagome system. The data reveal strongly pronounced and anisotropic second-order phase transition anomalies at the Néel transition at TN = 16K. From these data, together with literature results on the specific heat, the uniaxial-pressure dependences of TN are derived. We find a rather large positive pressure coefficient for uniaxial pressure along the hexagonal c axis of ∂TN/∂pc = (2.3 ± 0.2) K/GPa and smaller negative in-plane pressure coefficient of ∂TN/∂pin-plane = -(0.6 ± 0.03) K/GPa. These effects result in a small positive pressure coefficient under hydrostatic-pressure conditions of ∂TN/∂phydr = (1.1 ± 0.2) K/GPa. Bond-lengths considerations indicate that inter-layer Cu-O bonds, being larger than those typically found in stable Cu-O complexes, are responsible for this behavior.
Download full text files
Additional Services
| Author: | Elena Aurelia GatiORCiDGND, Bernd WolfORCiDGND, John A. Schlueter, Michael Lang |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-759267 |
| DOI: | https://doi.org/10.1016/j.phpro.2015.12.076 |
| ISSN: | 1875-3892 |
| Parent Title (English): | Physics procedia |
| Publisher: | Elsevier |
| Place of publication: | Amsterdam |
| Document Type: | Article |
| Language: | English |
| Year of Completion: | 2015 |
| Year of first Publication: | 2015 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Contributing Corporation: | International Conference on Microelectronics (20. : 2015 : Barcelona) |
| Release Date: | 2023/10/27 |
| Tag: | Kagome systems; magnetic frustration; thermodynamic properties |
| Volume: | 75 |
| Page Number: | 8 |
| First Page: | 597 |
| Last Page: | 604 |
| HeBIS-PPN: | 51717863X |
| Institutes: | Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International |
