Revisiting apparent ideal diamagnetism at ambient conditions in graphene-n-heptane-permalloy systems
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2026
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866911596704432128 |
|---|---|
| author | Dulal, Rajendra Teknowijoyo, Serafim Chahid, Sara Nikoghosyan, Vahan Gulian, Armen |
| author_facet | Dulal, Rajendra Teknowijoyo, Serafim Chahid, Sara Nikoghosyan, Vahan Gulian, Armen |
| contents | We previously reported apparent ideal diamagnetism at ambient conditions in a graphene-n-heptane-permalloy system. At the same time, the experiments revealed inconsistent behavior, including signal freezing and occasional paramagnetic responses. Further measurements performed without graphene produced similar signals, indicating that graphene is not responsible for the observed effects. The results suggest that magnetic field redistribution caused by inhomogeneities in the permalloy foil and experimental geometry can mimic ideal diamagnetism in sub-milligauss measurements. These findings revise the interpretation of our earlier results and emphasize caution in interpreting ultra-low-field magnetic measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_14395 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Revisiting apparent ideal diamagnetism at ambient conditions in graphene-n-heptane-permalloy systems Dulal, Rajendra Teknowijoyo, Serafim Chahid, Sara Nikoghosyan, Vahan Gulian, Armen Superconductivity We previously reported apparent ideal diamagnetism at ambient conditions in a graphene-n-heptane-permalloy system. At the same time, the experiments revealed inconsistent behavior, including signal freezing and occasional paramagnetic responses. Further measurements performed without graphene produced similar signals, indicating that graphene is not responsible for the observed effects. The results suggest that magnetic field redistribution caused by inhomogeneities in the permalloy foil and experimental geometry can mimic ideal diamagnetism in sub-milligauss measurements. These findings revise the interpretation of our earlier results and emphasize caution in interpreting ultra-low-field magnetic measurements. |
| title | Revisiting apparent ideal diamagnetism at ambient conditions in graphene-n-heptane-permalloy systems |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2604.14395 |