Out-of-plane magnetic phase diagram of Kitaev quantum spin liquid candidate Na2Co2TeO6
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866913371352203264 |
|---|---|
| author | Zhang, Shengzhi Lee, Sangyun Brosha, Eric Huang, Qing Zhou, Haidong Zapf, Vivien S. Lee, Minseong |
| author_facet | Zhang, Shengzhi Lee, Sangyun Brosha, Eric Huang, Qing Zhou, Haidong Zapf, Vivien S. Lee, Minseong |
| contents | We have investigated the magnetic properties and mapped out the phase diagram of the honeycomb magnet Na2Co2TeO6 with Co 3d7 in out-of-plane magnetic fields. This material has previously been proposed to show nearest-neighbor Kitaev interactions between Co spins and maybe even Kitaev quantum spin liquid behavior in high fields. At low magnetic fields, we observe a thermal phase transition at TN = 27 K, transitioning from a paramagnetic state to a canonical ferrimagnetic state. Under the application of magnetic fields, a spin flop-like phase transition occurred before saturation of J = 1/2 between 10 K and TN. Below 10 K, a peak-dip-peak structure emerges between 10 and 17 T in the magnetic susceptibility (dM/dH) before the magnetic saturation, reminiscent of magnetic plateau behavior. The measurement of the magnetocaloric effect also shows dip-peak-dip behavior in this field range. Our data can be explained by an XXZ model with a single ion anisotropy and possibly small Kitaev and Γ exchange interactions. We also unambiguously determined the magnetization saturation field that helps constrain the energy scale of the exchange interactions |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_13935 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Out-of-plane magnetic phase diagram of Kitaev quantum spin liquid candidate Na2Co2TeO6 Zhang, Shengzhi Lee, Sangyun Brosha, Eric Huang, Qing Zhou, Haidong Zapf, Vivien S. Lee, Minseong Strongly Correlated Electrons Other Condensed Matter Quantum Physics We have investigated the magnetic properties and mapped out the phase diagram of the honeycomb magnet Na2Co2TeO6 with Co 3d7 in out-of-plane magnetic fields. This material has previously been proposed to show nearest-neighbor Kitaev interactions between Co spins and maybe even Kitaev quantum spin liquid behavior in high fields. At low magnetic fields, we observe a thermal phase transition at TN = 27 K, transitioning from a paramagnetic state to a canonical ferrimagnetic state. Under the application of magnetic fields, a spin flop-like phase transition occurred before saturation of J = 1/2 between 10 K and TN. Below 10 K, a peak-dip-peak structure emerges between 10 and 17 T in the magnetic susceptibility (dM/dH) before the magnetic saturation, reminiscent of magnetic plateau behavior. The measurement of the magnetocaloric effect also shows dip-peak-dip behavior in this field range. Our data can be explained by an XXZ model with a single ion anisotropy and possibly small Kitaev and Γ exchange interactions. We also unambiguously determined the magnetization saturation field that helps constrain the energy scale of the exchange interactions |
| title | Out-of-plane magnetic phase diagram of Kitaev quantum spin liquid candidate Na2Co2TeO6 |
| topic | Strongly Correlated Electrons Other Condensed Matter Quantum Physics |
| url | https://arxiv.org/abs/2405.13935 |