Towards a global phase diagram of Ce-based dipolar-octupolar pyrochlore magnets under magnetic fields
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| Format: | Preprint |
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2025
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| _version_ | 1866909951308333056 |
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| author | Zhou, Zhengbang Kim, Yong Baek |
| author_facet | Zhou, Zhengbang Kim, Yong Baek |
| contents | Recent experiments have established a strong case for Ce$_2$(Zr, Sn, Hf)$_2$O$_7$ to host $π$-flux quantum spin ice (QSI). However, an irrefutable conclusion still requires strong, multifaceted evidence. In dipolar-octupolar (DO) compounds, external magnetic fields only strongly couple with the dipolar component $τ_z$ along its local z-axis in contrast to octupolar components $τ^{x,y}$. This gives rise to the unique ways magnetic fields interact with the system and, in turn, provides us with a variety of tuning knobs to generate comprehensive experimental results. In this work, we focus on magnetic fields along the (110), (111), and (001) directions and present a plethora of remarkable experimental signatures to probe the underlying physics of $π$-flux QSI using gauge mean field theory (GMFT) and Monte Carlo simulations. In particular, we present unique signatures in magnetic field-dependent phase diagrams, equal-time and dynamical structure factors, and magnetostriction. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_14067 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards a global phase diagram of Ce-based dipolar-octupolar pyrochlore magnets under magnetic fields Zhou, Zhengbang Kim, Yong Baek Strongly Correlated Electrons Recent experiments have established a strong case for Ce$_2$(Zr, Sn, Hf)$_2$O$_7$ to host $π$-flux quantum spin ice (QSI). However, an irrefutable conclusion still requires strong, multifaceted evidence. In dipolar-octupolar (DO) compounds, external magnetic fields only strongly couple with the dipolar component $τ_z$ along its local z-axis in contrast to octupolar components $τ^{x,y}$. This gives rise to the unique ways magnetic fields interact with the system and, in turn, provides us with a variety of tuning knobs to generate comprehensive experimental results. In this work, we focus on magnetic fields along the (110), (111), and (001) directions and present a plethora of remarkable experimental signatures to probe the underlying physics of $π$-flux QSI using gauge mean field theory (GMFT) and Monte Carlo simulations. In particular, we present unique signatures in magnetic field-dependent phase diagrams, equal-time and dynamical structure factors, and magnetostriction. |
| title | Towards a global phase diagram of Ce-based dipolar-octupolar pyrochlore magnets under magnetic fields |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.14067 |