Discovery of an odd-parity f-wave charge order in a kagome metal
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2026
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| author | Zheng, Jiangchang Chen, Caiyun Fu, Ruiqin Buiarelli, Luca Lin, Zihan Yang, Fazhi Guo, Tianhao Pokharel, Ganesh Salinas, Andrea Capa Zhou, Sen Birol, Turan Wilson, Stephen D. Ma, Junzhang Schultz, Daniel J. Wu, Xianxin Jäck, Berthold |
| author_facet | Zheng, Jiangchang Chen, Caiyun Fu, Ruiqin Buiarelli, Luca Lin, Zihan Yang, Fazhi Guo, Tianhao Pokharel, Ganesh Salinas, Andrea Capa Zhou, Sen Birol, Turan Wilson, Stephen D. Ma, Junzhang Schultz, Daniel J. Wu, Xianxin Jäck, Berthold |
| contents | The spontaneous breaking of symmetries is a cornerstone of physics, defining the phases of matter from the cosmological scale to the quantum realm. In condensed matter, electronic orders are classified by their behavior under fundamental symmetries like spatial inversion (parity). While even-parity orders, such as conventional superconductivity and charge density waves, are ubiquitous, their odd-parity counterparts--predicted to host exotic phenomena such as gapless quasiparticle excitations and novel collective modes--are comparatively elusive states of quantum matter. Here, using high-resolution scanning tunneling microscopy and angle-resolved photoemission spectroscopy on the kagome metal CsV$_3$Sb$_5$, we report the discovery of an inversion symmetry-breaking $f$-wave charge bond order. We show that this phase, which preserves translation symmetry, is stabilized by the spontaneous opening of a spectral gap at a previously overlooked Dirac point, providing a textbook condensed-matter realization of the Gross-Neveu model for dynamical mass generation and parity breaking. Intriguingly, this $f$-wave order is itself a intervening phase, vanishing abruptly below a temperature of 10\,K and pointing to a subsequent transition into a `hidden' electronic state that is invisible to local STM probes. Our findings establish odd-parity charge order as a novel phase of matter, here, embedded within the intricate hierarchy of correlated electronic orders on the kagome lattice. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_14538 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Discovery of an odd-parity f-wave charge order in a kagome metal Zheng, Jiangchang Chen, Caiyun Fu, Ruiqin Buiarelli, Luca Lin, Zihan Yang, Fazhi Guo, Tianhao Pokharel, Ganesh Salinas, Andrea Capa Zhou, Sen Birol, Turan Wilson, Stephen D. Ma, Junzhang Schultz, Daniel J. Wu, Xianxin Jäck, Berthold Strongly Correlated Electrons Mesoscale and Nanoscale Physics The spontaneous breaking of symmetries is a cornerstone of physics, defining the phases of matter from the cosmological scale to the quantum realm. In condensed matter, electronic orders are classified by their behavior under fundamental symmetries like spatial inversion (parity). While even-parity orders, such as conventional superconductivity and charge density waves, are ubiquitous, their odd-parity counterparts--predicted to host exotic phenomena such as gapless quasiparticle excitations and novel collective modes--are comparatively elusive states of quantum matter. Here, using high-resolution scanning tunneling microscopy and angle-resolved photoemission spectroscopy on the kagome metal CsV$_3$Sb$_5$, we report the discovery of an inversion symmetry-breaking $f$-wave charge bond order. We show that this phase, which preserves translation symmetry, is stabilized by the spontaneous opening of a spectral gap at a previously overlooked Dirac point, providing a textbook condensed-matter realization of the Gross-Neveu model for dynamical mass generation and parity breaking. Intriguingly, this $f$-wave order is itself a intervening phase, vanishing abruptly below a temperature of 10\,K and pointing to a subsequent transition into a `hidden' electronic state that is invisible to local STM probes. Our findings establish odd-parity charge order as a novel phase of matter, here, embedded within the intricate hierarchy of correlated electronic orders on the kagome lattice. |
| title | Discovery of an odd-parity f-wave charge order in a kagome metal |
| topic | Strongly Correlated Electrons Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.14538 |