Academic Journal
Drastic magnetic-field-induced chiral current order and emergent current-bond-field interplay in kagome metals.
| Τίτλος: | Drastic magnetic-field-induced chiral current order and emergent current-bond-field interplay in kagome metals. |
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| Συγγραφείς: | Tazai R; Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan., Yamakawa Y; Department of Physics, Nagoya University, Nagoya 464-8602, Japan., Kontani H; Department of Physics, Nagoya University, Nagoya 464-8602, Japan. |
| Πηγή: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2024 Jan 16; Vol. 121 (3), pp. e2303476121. Date of Electronic Publication: 2024 Jan 11. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE; PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Washington, DC : National Academy of Sciences |
| Περίληψη: | In kagome metals, the chiral current order parameter [Formula: see text] with time-reversal-symmetry-breaking is the source of various exotic electronic states, while the method of controlling the current order and its interplay with the star-of-David bond order [Formula: see text] are still unsolved. Here, we reveal that tiny uniform orbital magnetization [Formula: see text] is induced by the chiral current order, and its magnitude is prominently enlarged under the presence of the bond order. Importantly, we derive the magnetic-field ([Formula: see text])-induced Ginzburg-Landau (GL) free energy expression [Formula: see text], which enables us to elucidate the field-induced current-bond phase transitions in kagome metals. The emergent current-bond-[Formula: see text] trilinear coupling term in the free energy, [Formula: see text], naturally explains the characteristic magnetic-field sensitive electronic states in kagome metals, such as the field-induced current order and the strong interplay between the bond and current orders. The GL coefficients of [Formula: see text] derived from the realistic multiorbital model are appropriate to explain various experiments. Furthermore, we discuss the field-induced loop current orders in the square lattice models that have been studied in cuprate superconductors. |
| Competing Interests: | Competing interests statement:The authors declare no competing interest. |
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| Grant Information: | JP22K14003 JP20K22328 Ministry of Education, Culture, Sports, Science and Technology (MEXT); JP19H05825 Ministry of Education, Culture, Sports, Science and Technology (MEXT); JP20K03858 Ministry of Education, Culture, Sports, Science and Technology (MEXT) |
| Contributed Indexing: | Keywords: Ginzburg–Landau theory; bond order; kagome metals; loop current order |
| Entry Date(s): | Date Created: 20240111 Latest Revision: 20241023 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC10801867 |
| DOI: | 10.1073/pnas.2303476121 |
| PMID: | 38207076 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1091-6490 |
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| DOI: | 10.1073/pnas.2303476121 |