Two distinct quantum critical behaviors in the doped two-dimensional periodic Anderson model
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866912271255470080 |
|---|---|
| author | Kitatani, M. Schäfer, T. Katanin, A. A. Toschi, A. Held, K. |
| author_facet | Kitatani, M. Schäfer, T. Katanin, A. A. Toschi, A. Held, K. |
| contents | We study quantum criticality in the doped two-dimensional periodic Anderson model with the hybridization acting as a tuning parameter. Employing the dynamical vertex approximation we find two distinct quantum critical behaviors. One is a quantum critical point between the antiferromagnetically ordered and the Kondo state, both metallic with itinerant $f$ electrons. Here, we obtained the critical exponent $γ\approx 1$ for the temperature dependence of the antiferromagnetic susceptibility. We observe a \emph{second} quantum critical behavior with $γ=2$ above the continuing zero-temperature magnetic order, at a quantum critical point where the $f$ electrons turn from localized to itinerant. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09529 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Two distinct quantum critical behaviors in the doped two-dimensional periodic Anderson model Kitatani, M. Schäfer, T. Katanin, A. A. Toschi, A. Held, K. Strongly Correlated Electrons We study quantum criticality in the doped two-dimensional periodic Anderson model with the hybridization acting as a tuning parameter. Employing the dynamical vertex approximation we find two distinct quantum critical behaviors. One is a quantum critical point between the antiferromagnetically ordered and the Kondo state, both metallic with itinerant $f$ electrons. Here, we obtained the critical exponent $γ\approx 1$ for the temperature dependence of the antiferromagnetic susceptibility. We observe a \emph{second} quantum critical behavior with $γ=2$ above the continuing zero-temperature magnetic order, at a quantum critical point where the $f$ electrons turn from localized to itinerant. |
| title | Two distinct quantum critical behaviors in the doped two-dimensional periodic Anderson model |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.09529 |