Non-Fermi liquid quasiparticles in strain-tuned Sr2RuO4
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912274582601728 |
|---|---|
| author | Hunter, A. Putzke, C. Kugler, F. B. Beck, S. Cappelli, E. Margot, F. Straub, M. Alexanian, Y. Teyssier, J. de la Torre, A. Plumb, K. W. Watson, M. D. Kim, T. K. Cacho, C. Plumb, N. C. Shi, M. Radovic, M. Osiecki, J. Polley, C. Sokolov, D. A. Mackenzie, A. P. Berg, E. Georges, A. Moll, P. J. W. Tamai, A. Baumberger, F. |
| author_facet | Hunter, A. Putzke, C. Kugler, F. B. Beck, S. Cappelli, E. Margot, F. Straub, M. Alexanian, Y. Teyssier, J. de la Torre, A. Plumb, K. W. Watson, M. D. Kim, T. K. Cacho, C. Plumb, N. C. Shi, M. Radovic, M. Osiecki, J. Polley, C. Sokolov, D. A. Mackenzie, A. P. Berg, E. Georges, A. Moll, P. J. W. Tamai, A. Baumberger, F. |
| contents | Interacting electrons can form metallic states beyond the Fermi liquid paradigm, a conceptual frontier of many-body physics mainly explored via bulk thermodynamics and transport. In contrast, the microscopics of anomalous single-particle excitations underlying non-Fermi liquid properties have largely remained in the dark. Here we spectroscopically map such quantum-critical excitations in Sr$_2$RuO$_4$ under uniaxial pressure, an experimental challenge overcome by technical advances combining focused ion beam micro-milling with laser angle resolved photoemission. We show that quasiparticle excitations acquire a non-Fermi liquid scattering rate near the critical point but remain remarkably robust throughout the transition. These experiments serve as a benchmark for the theory of anomalous metals and settle the long-standing question if quantum-critical systems host quasiparticle excitations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11311 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-Fermi liquid quasiparticles in strain-tuned Sr2RuO4 Hunter, A. Putzke, C. Kugler, F. B. Beck, S. Cappelli, E. Margot, F. Straub, M. Alexanian, Y. Teyssier, J. de la Torre, A. Plumb, K. W. Watson, M. D. Kim, T. K. Cacho, C. Plumb, N. C. Shi, M. Radovic, M. Osiecki, J. Polley, C. Sokolov, D. A. Mackenzie, A. P. Berg, E. Georges, A. Moll, P. J. W. Tamai, A. Baumberger, F. Strongly Correlated Electrons Interacting electrons can form metallic states beyond the Fermi liquid paradigm, a conceptual frontier of many-body physics mainly explored via bulk thermodynamics and transport. In contrast, the microscopics of anomalous single-particle excitations underlying non-Fermi liquid properties have largely remained in the dark. Here we spectroscopically map such quantum-critical excitations in Sr$_2$RuO$_4$ under uniaxial pressure, an experimental challenge overcome by technical advances combining focused ion beam micro-milling with laser angle resolved photoemission. We show that quasiparticle excitations acquire a non-Fermi liquid scattering rate near the critical point but remain remarkably robust throughout the transition. These experiments serve as a benchmark for the theory of anomalous metals and settle the long-standing question if quantum-critical systems host quasiparticle excitations. |
| title | Non-Fermi liquid quasiparticles in strain-tuned Sr2RuO4 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.11311 |