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Daily Overview: Dear readers, welcome to today’s overview of the latest papers in the field of nickelate superconductivity. Although the highlight works of today do not directly focus on nickelates, multiple papers are highly relevant to the core issues in the nickelate superconductivity field in terms of mechanisms, methods, or phenomena, making them worthy of close attention. For example, [5] reveals the critical role of correlated hopping interactions in driving superconducting phase transitions, providing a theoretical framework for understanding possible non-local correlation effects in nickelates; [11] proposes microwave Kerr/Faraday resonance as a sensitive probe for detecting time-reversal symmetry breaking in chiral superconductors, a technique that can be extended to the study of pairing symmetry in nickel-based superconductors; [12] reports the coexistence of magnetic and multipole orders and their constraints on superconducting pairing in CeRh₂As₂, offering analogies to the competition between spin fluctuations and superconductivity in nickelates; [14] uncovers multi-scale dynamic modulation structures in SrTiO₃, where lattice instability shares physical similarities with charge order and lattice coupling in nickelates; [15] constructs a theory of composite Bogoliubov Fermi liquids, providing a new paradigm for unconventional superconductivity in Chern bands, which may inspire theoretical exploration of topological superconducting states in nickelates. These works expand the understanding of strong correlations and unconventional superconductivity from different dimensions, offering research ideas and tools that can be applied to the nickelate superconductivity field. arXiv submission processing window: 2026-01-14 20:07 to 2026-01-15 18:50 UTC. ...

Daily Overview: Today’s highlights focus on deepening the understanding of the electronic structure of mixed Ruddlesden-Popper nickelates. [1] Polarization-resolved infrared spectroscopy reveals strong electrodynamic anisotropy induced by density-wave order in La₄Ni₃O₁₀, where the out-of-plane conductivity is sharply suppressed. The spin-density-wave order drives a redistribution of Ni-dz² orbital occupancy, effectively decoupling the Ni-O layers and significantly enhancing the two-dimensionality of the system. Additionally, [6] Monte Carlo simulations revisit the Jahn-Teller transition in correlated oxides, revealing that systems including layered nickelates (e.g., NaNiO₂) exhibit displacement-type transition characteristics. The behavioral differences between perovskites and layered nickelates arise from variations in lattice configurational entropy, offering new perspectives for understanding the structure-property relationships in nickelates. These two studies collectively advance the knowledge of electronic states and lattice dynamics in nickel-based superconductors and related systems. arXiv submission processing window: 2026-01-13 21:48 to 2026-01-14 19:00 UTC. ...

Daily Overview: In today’s overview of papers on nickel-based superconductivity, there is no study directly centered on nickelates, but a theoretical work on graphene superconductivity is closely related to current hot topics in nickel-based superconductivity. Using the self-consistent Bogoliubov–de Gennes method, this work reveals how the “kinetic blocking” mechanism in strain-engineered graphene leads to the formation of quasi-one-dimensional filamentary structures of the superconducting order parameter at geometric nodes, presenting a pairing density wave state with sign reversal. This mechanism provides a theoretical framework for understanding the recently observed filamentary superconductivity in nickelate thin films, indicating that strain gradients can achieve spatial selectivity of the superconducting state by decoupling internal degrees of freedom, thereby expanding our understanding of quantum phase modulation with geometric origins. arXiv submission processing window: 2026-01-12 22:51 to 2026-01-13 19:32 UTC. ...

Daily Overview: Today’s highlight work is focused on deepening the understanding of the electronic structure of mixed Ruddlesden-Popper nickelates. In [1], a systematic study using soft X-ray absorption spectroscopy tracked the topotactic reduction process of PrNiOₓ thin films from the perovskite to the infinite-layer structure. By combining Ni L-edge and O K-edge spectroscopy with cluster model calculations, it was revealed that none of the samples exhibit a pure d⁹ configuration; even in the superconducting state, significant hole doping is present, and oxygen 2p holes persist. This result directly challenges previous assumptions regarding the hole doping limit and indicates that the self-doping effect, together with oxygen non-stoichiometry, leads to a complex hole doping mechanism, providing key experimental constraints for understanding the electronic ground state of nickelate superconductivity. arXiv submission processing window: 2026-01-12 01:00 to 2026-01-12 18:44 UTC. ...

Daily Overview: Hello readers, welcome to today’s rapid overview of papers in the nickel-based superconductivity field. Although no paper directly focuses on nickelates today, several works are highly relevant to the core issues currently under investigation in this field, from perspectives such as superconducting pairing mechanisms, interface physics, and materials preparation. Among them, [3] systematically studies the FFLO superconducting states driven by two types of alternating magnetic order—(d_{xy}) and (d_{x^{2}-y^{2}})—in two-dimensional lattices, revealing the stabilization conditions over a wide parameter range at low fillings, providing theoretical clues for exploring possible finite-momentum pairing in nickel-based superconductors. [1] reviews mechanisms such as Ising pairing and superconductor/ferromagnet proximity effects in van der Waals superconducting electronics; the concepts of interfacial tunability and nonreciprocal transport discussed therein offer insights for understanding interface superconductivity in nickelate heterostructures. [5] definitively rules out magnetic order in RuO₂ using X-ray linear dichroism, and this conclusion also holds methodological reference value for clarifying the controversy over spin configurations in nickelates. Additionally, [4] presents the epitaxial synthesis and electronic structure characterization of metastable TaO₂ thin films, demonstrating stabilization strategies for oxide metastable phases, which may provide process inspiration for phase engineering of nickelate thin films. Collectively, these works enrich the physical and materials understanding relevant to nickel-based superconductivity from different perspectives. arXiv submission processing window: 2026-01-10 20:02 to 2026-01-11 18:19 UTC. ...

Daily Overview: Dear readers, welcome to today’s overview of the latest papers in the field of nickel-based superconductivity. The highlight of today’s work focuses on a deeper understanding of the electronic structure of hybrid Ruddlesden–Popper nickelates. In [1], a theoretical study employing a molecular orbital basis to treat the quarter-filled bilayer system reveals the emergence of Kugel–Khomskii physics and predicts a novel maximal spin-layer entangled phase, providing a specific theoretical framework for understanding composite entanglement in bilayer nickelate superconductors. Additionally, [5] investigates the coexistence of superconductivity and charge density waves (CDW) in correlated systems using the Green’s function method, exploring the impact of next-nearest-neighbor hopping on competition—a topic closely related to the interplay between CDW and superconductivity in nickel-based superconductors, and thus worthy of attention. arXiv submission processing window: 2026-01-09 21:54 to 2026-01-10 17:32 UTC. ...

Daily Overview: Today’s highlights focus on several studies that, while not directly addressing nickelates, investigate physical mechanisms highly relevant to core issues in nickel-based superconductivity. Among them, the research on Jahn-Teller effect-driven lifting of molecular orbital degeneracy and orbital liquid state in NbSeI provides a microscopic picture for understanding the coupling between orbital order and structural distortion in nickelates. The coexistence of Cr-kagome flat bands and Yb-4f correlated flat bands in YbCr₆Ge₆ offers an important analogy for the mechanism of superconductivity driven by hybridization between wide and narrow bands in nickelates. Meanwhile, the symmetry engineering design of perovskite altermagnets provides methodological insights for controlling magnetoelectric coupling in nickel-based heterostructures. Collectively, these works expand the understanding of the origin of unconventional superconductivity in correlated electron systems from the perspectives of electronic correlations, orbital physics, and symmetry control. arXiv submission processing window: 2026-01-08 20:22 to 2026-01-09 19:29 UTC. ...

Daily Overview: Dear readers, welcome to today’s research highlights in the nickel-based superconductivity field. Although none of the papers in today’s list directly focus on nickelate superconductors, several studies are highly relevant to the core issues currently facing nickel-based superconductivity, particularly in terms of electronic structure, superconducting mechanisms, and computational methods. Among them, RIXS studies on the local electronic structure of Ni²⁺ in the pyrochlore antiferromagnet NaCaNi₂F₇ reveal that its octahedral environment is highly robust against A-site disorder, allowing comparisons to the electronic structure stability of the NiO₂ planes in nickel-based superconductors in terms of such local effects. Research on the condensation mechanism of cuprate superconductors reveals bosonic statistical characteristics of strong coupling between pairon excitations and the condensate, and the proposed picture of an energy-dependent gap proportional to the spin-exchange energy may provide insights into understanding similar spin-fluctuation-mediated pairing in nickelates. The discovery of chiral topological order on the surface of the cluster Mott insulator Nb₃Br₈ and its explanation of the zero-field diode effect suggest that surface states in layered correlated systems can give rise to topological superconducting phases under weak correlations, echoing possible interfacial superconducting mechanisms in nickel-based superconductor thin films. Furthermore, the hDMFT method, which achieves full five-orbital DMFT calculations for Ba₂IrO₄ and Ba₂RhO₄, significantly reduces computational costs and provides a feasible pathway for future multi-orbital correlated calculations involving the full d manifold in nickelates. arXiv submission processing window: 2026-01-08 03:40 to 2026-01-08 19:07 UTC. ...

Daily Overview: In today’s paper overview, although no studies directly focusing on nickelates were reported, multiple works are highly relevant to the core issues in nickel-based superconductivity in terms of physical mechanisms and research methods. Among them, [2] demonstrates, through the La₁₋ₓCeₓFeSiH solid solution system, how Kondo entanglement between 3d and 4f correlated electrons finely tunes the competition and coexistence of superconductivity and magnetic order, providing a valuable paradigm for understanding the interaction between nickel 3d and rare-earth 4f electronic states in nickelates. [4] theoretically extends the fluctuation conductivity theory in the ultra-clean limit to multicomponent superconductors, clarifying gauge invariance and critical behavior; its analytical framework for transport signals in multiband systems has direct reference value for nickel-based multiband superconductors. Furthermore, the topological nodal-line superconducting phase realized by coupling in-plane ferromagnetism with conventional s-wave superconductivity in [1], along with the mechanism of band tilting and nodal structure generation, offers new insights for exploring similar topological superconducting states in nickel-based heterostructures. Together, these works enrich the research perspectives on superconducting mechanisms and quantum phase control in correlated electron systems. arXiv submission processing window: 2026-01-07 02:11 to 2026-01-07 19:00 UTC. ...

Daily Overview: Based on the list of papers you provided, today’s daily overview does not include studies directly focused on the field of nickelate superconductors. However, several works discuss physical mechanisms or research methods highly relevant to the core issues currently concerning nickelate superconductivity, making them worthy of attention. The following is the overall introduction prepared for today’s post: — Dear readers, welcome to today’s daily overview of the field of nickelate superconductors. Although the highlighted works today do not directly study nickelates, they focus on key topics such as superconducting pairing mechanisms, electron-phonon coupling modulation, nematic orbital anisotropy, and the competition between charge density waves and superconductivity, providing important references for understanding nickelate superconductivity. For example, [1] proposes interlayer charge-transfer ferroelectric fluctuations as a pairing mechanism for van der Waals superconductors; [2] significantly enhances the superconducting transition temperature of A15-type LaH5.75 via Ba doping; [3] real-space images orbital nematicity in iron-based superconductors using laser PEEM; [5] reveals the competition between CDW and superconductivity in Janus MoXH monolayers; [8] explores electron pairing mechanisms without phonon mediation based on a two-band model. These findings expand the understanding of unconventional superconductivity and complement the current concerns in the nickelate superconductor field regarding electronic structure, pairing mechanisms, and competing orders. arXiv submission processing window: 2026-01-05 21:10 to 2026-01-06 19:28 UTC. ...