Origin of the crossover from polarons to Fermi liquids in transition metal oxides
Transition metal oxides host a wealth of exotic phenomena ranging from charge, orbital, and magnetic order to nontrivial topological phases and superconductivity. In order to translate these unique materials properties into device functionalities these materials must be doped, however the nature of...
| المؤلفون الرئيسيون: | , , |
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| التنسيق: | Journal article |
| منشور في: |
Nature Publishing Group
2017
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| _version_ | 1826284646492536832 |
|---|---|
| author | Verdi, C Caruso, F Giustino, F |
| author_facet | Verdi, C Caruso, F Giustino, F |
| author_sort | Verdi, C |
| collection | OXFORD |
| description | Transition metal oxides host a wealth of exotic phenomena ranging from charge, orbital, and magnetic order to nontrivial topological phases and superconductivity. In order to translate these unique materials properties into device functionalities these materials must be doped, however the nature of carriers and their conduction mechanism at the atomic scale remain unclear. Recent angle-resolved photoelectron spectroscopy investigations provided insight into these questions, revealing that the carriers of prototypical metal oxides undergo a transition from a polaronic liquid to a Fermi liquid regime with increasing doping. Here, by performing ab initio many-body calculations of angle-resolved photoemission spectra of titanium dioxide, we show that this transition originates from non-adiabatic polar electron-phonon coupling, and occurs when the frequency of plasma oscillations exceeds that of longitudinaloptical phonons. This finding suggests that a universal mechanism may underlie polaron formation in transition metal oxides, and provides a pathway for engineering emergent properties in quantum matter. |
| first_indexed | 2024-03-07T01:16:58Z |
| format | Journal article |
| id | oxford-uuid:8f047369-b97f-46db-a66f-8b0c3816b1cb |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:16:58Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:8f047369-b97f-46db-a66f-8b0c3816b1cb2022-03-26T23:01:31ZOrigin of the crossover from polarons to Fermi liquids in transition metal oxidesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8f047369-b97f-46db-a66f-8b0c3816b1cbSymplectic Elements at OxfordNature Publishing Group2017Verdi, CCaruso, FGiustino, FTransition metal oxides host a wealth of exotic phenomena ranging from charge, orbital, and magnetic order to nontrivial topological phases and superconductivity. In order to translate these unique materials properties into device functionalities these materials must be doped, however the nature of carriers and their conduction mechanism at the atomic scale remain unclear. Recent angle-resolved photoelectron spectroscopy investigations provided insight into these questions, revealing that the carriers of prototypical metal oxides undergo a transition from a polaronic liquid to a Fermi liquid regime with increasing doping. Here, by performing ab initio many-body calculations of angle-resolved photoemission spectra of titanium dioxide, we show that this transition originates from non-adiabatic polar electron-phonon coupling, and occurs when the frequency of plasma oscillations exceeds that of longitudinaloptical phonons. This finding suggests that a universal mechanism may underlie polaron formation in transition metal oxides, and provides a pathway for engineering emergent properties in quantum matter. |
| spellingShingle | Verdi, C Caruso, F Giustino, F Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title | Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title_full | Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title_fullStr | Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title_full_unstemmed | Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title_short | Origin of the crossover from polarons to Fermi liquids in transition metal oxides |
| title_sort | origin of the crossover from polarons to fermi liquids in transition metal oxides |
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