Phase diagram of the vortex state in an amorphous Re6Zr thin film exhibiting inverse melting
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916055227564032 |
|---|---|
| author | Das, Pritam Sengupta, Subhamita Jana, Anjan Duhan, Rishabh Dutta, Sulagna Dutta, Arghya Jesudasan, John Bagwe, Vivas Raychaudhuri, Pratap |
| author_facet | Das, Pritam Sengupta, Subhamita Jana, Anjan Duhan, Rishabh Dutta, Sulagna Dutta, Arghya Jesudasan, John Bagwe, Vivas Raychaudhuri, Pratap |
| contents | In Type II superconductors, the vortex lattice can exhibit "inverse melting," transitioning from a liquid to a crystalline solid as temperature increases. While recently observed via scanning tunneling microscopy in a 20 nm thick amorphous Re6Zr thin film, this work investigates the corresponding d.c. transport and low-frequency magnetic screening responses. By identifying distinct signatures of these transitions and integrating scanning tunneling spectroscopy imaging, we construct a comprehensive vortex-state phase diagram in the magnetic field-temperature parameter space. Furthermore, we demonstrate that inverse melting is thickness-dependent: a 5 nm film retains an inhomogeneous liquid state, while a 50 nm film maintains a crystalline solid structure except near the upper critical field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_23567 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Phase diagram of the vortex state in an amorphous Re6Zr thin film exhibiting inverse melting Das, Pritam Sengupta, Subhamita Jana, Anjan Duhan, Rishabh Dutta, Sulagna Dutta, Arghya Jesudasan, John Bagwe, Vivas Raychaudhuri, Pratap Superconductivity Statistical Mechanics In Type II superconductors, the vortex lattice can exhibit "inverse melting," transitioning from a liquid to a crystalline solid as temperature increases. While recently observed via scanning tunneling microscopy in a 20 nm thick amorphous Re6Zr thin film, this work investigates the corresponding d.c. transport and low-frequency magnetic screening responses. By identifying distinct signatures of these transitions and integrating scanning tunneling spectroscopy imaging, we construct a comprehensive vortex-state phase diagram in the magnetic field-temperature parameter space. Furthermore, we demonstrate that inverse melting is thickness-dependent: a 5 nm film retains an inhomogeneous liquid state, while a 50 nm film maintains a crystalline solid structure except near the upper critical field. |
| title | Phase diagram of the vortex state in an amorphous Re6Zr thin film exhibiting inverse melting |
| topic | Superconductivity Statistical Mechanics |
| url | https://arxiv.org/abs/2605.23567 |