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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| Accesso online: | https://arxiv.org/abs/2408.11163 |
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| _version_ | 1866917867792891904 |
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| author | Channarayappa, Sharath Kumar Kumar, Sankalp Vidhyadhiraja, N. S. Pujari, Sumiran Saravanan, M. P. Sebastian, Amal Choi, Eun Sang Chikara, Shalinee Nambi, Dolly Suresh, Athira Lal, Siddhartha Jaiswal-Nagar, D. |
| author_facet | Channarayappa, Sharath Kumar Kumar, Sankalp Vidhyadhiraja, N. S. Pujari, Sumiran Saravanan, M. P. Sebastian, Amal Choi, Eun Sang Chikara, Shalinee Nambi, Dolly Suresh, Athira Lal, Siddhartha Jaiswal-Nagar, D. |
| contents | The ground state of a one-dimensional spin-1/2 uniform antiferromagnetic Heisenberg chain (AfHc) is a Tomonaga-Luttinger liquid which is quantum-critical with respect to applied magnetic fields upto a saturation field Hs beyond which it transforms to a fully polarised state. Wilson ratio has been predicted to be a good indicator for demarcating these phases [Phys. Rev. B 96, 220401 (2017)]. From detailed temperature and magnetic field dependent magnetisation, magnetic susceptibility and specific heat measurements in a metalorganic complex and comparisons with field theory and quantum transfer matrix method calculations, the complex was found to be a very good realisation of a spin-1/2 AfHc. Wilson ratio obtained from experimentally obtained magnetic susceptibility and magnetic contribution of specific heat values was used to map the magnetic phase diagram of the uniform spin-1/2 AfHc over large regions of phase space demarcating Tomonaga-Luttinger liquid, saturation field quantum critical, and fully polarised states. Luttinger parameter and spinon velocity were found to match very well with the values predicted from conformal field theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_11163 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Tomonaga-Luttinger liquid and quantum criticality in spin-1/2 antiferromagnetic Heisenberg chain C14H18CuN4O10 via Wilson ratio Channarayappa, Sharath Kumar Kumar, Sankalp Vidhyadhiraja, N. S. Pujari, Sumiran Saravanan, M. P. Sebastian, Amal Choi, Eun Sang Chikara, Shalinee Nambi, Dolly Suresh, Athira Lal, Siddhartha Jaiswal-Nagar, D. Strongly Correlated Electrons The ground state of a one-dimensional spin-1/2 uniform antiferromagnetic Heisenberg chain (AfHc) is a Tomonaga-Luttinger liquid which is quantum-critical with respect to applied magnetic fields upto a saturation field Hs beyond which it transforms to a fully polarised state. Wilson ratio has been predicted to be a good indicator for demarcating these phases [Phys. Rev. B 96, 220401 (2017)]. From detailed temperature and magnetic field dependent magnetisation, magnetic susceptibility and specific heat measurements in a metalorganic complex and comparisons with field theory and quantum transfer matrix method calculations, the complex was found to be a very good realisation of a spin-1/2 AfHc. Wilson ratio obtained from experimentally obtained magnetic susceptibility and magnetic contribution of specific heat values was used to map the magnetic phase diagram of the uniform spin-1/2 AfHc over large regions of phase space demarcating Tomonaga-Luttinger liquid, saturation field quantum critical, and fully polarised states. Luttinger parameter and spinon velocity were found to match very well with the values predicted from conformal field theory. |
| title | Tomonaga-Luttinger liquid and quantum criticality in spin-1/2 antiferromagnetic Heisenberg chain C14H18CuN4O10 via Wilson ratio |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2408.11163 |