Straintronics across Lieb-Kagome interconversion and variable transport scaling exponents
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866913984877166592 |
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| author | Kunwar, Shashikant Singh Karmakar, Madhuparna |
| author_facet | Kunwar, Shashikant Singh Karmakar, Madhuparna |
| contents | We propose a novel protocol of low-temperature, strain-tuned re-entrant metal-insulator transition and crossover between strongly correlated line-graph lattices (Lieb and Kagome). Using a non-perturbative numerical approach, we demonstrate for the first time that an applied shear strain stabilizes a metallic phase cradled in between a gapped magnetic insulator and a gapless flat band localized insulator, facilitating the Lieb/Kagome interconversion. Our results on transport signatures exhibit variable scaling exponents for electrical resistivity and optical conductivity, providing clear evidence of non-Fermi liquid physics. We also define a strain-dependent thermal scale to quantify the crossover between the non-Fermi liquid and bad metal phases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08142 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Straintronics across Lieb-Kagome interconversion and variable transport scaling exponents Kunwar, Shashikant Singh Karmakar, Madhuparna Strongly Correlated Electrons Materials Science Applied Physics We propose a novel protocol of low-temperature, strain-tuned re-entrant metal-insulator transition and crossover between strongly correlated line-graph lattices (Lieb and Kagome). Using a non-perturbative numerical approach, we demonstrate for the first time that an applied shear strain stabilizes a metallic phase cradled in between a gapped magnetic insulator and a gapless flat band localized insulator, facilitating the Lieb/Kagome interconversion. Our results on transport signatures exhibit variable scaling exponents for electrical resistivity and optical conductivity, providing clear evidence of non-Fermi liquid physics. We also define a strain-dependent thermal scale to quantify the crossover between the non-Fermi liquid and bad metal phases. |
| title | Straintronics across Lieb-Kagome interconversion and variable transport scaling exponents |
| topic | Strongly Correlated Electrons Materials Science Applied Physics |
| url | https://arxiv.org/abs/2508.08142 |