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Open research questions in Physics of Superconductivity and Magnetism

150 gap statements mined from Physics of Superconductivity and Magnetism papers in our 4.5M-paper local library, which holds 995 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The relationship between the 2D phase-slip physics described here and the extensive barrier scaling ∆FOV ∼ (w/ξ)∆F 2D from alternative approaches remains unresolved.

    Thermal phase slips in superconducting films · 2026 · DOI

  • The numerical variational scheme cannot identify a saddle-point solution below I1 ≈ 0.915 Ic, creating a gap in understanding the instanton behavior at lower currents.

    Thermal phase slips in superconducting films · 2026 · DOI

  • A phenomenological model that can organize experimental observables in a manner that is both interpretable and invertible is needed.

    Storm-Chaser Physics: The Blackwell Channel and the Emergence of Room-Temperature · 2026 · DOI

  • Accurately predicting the electrical properties of JJs based on three-dimensional atomic models remains a challenge. The structural variations at the microscopic scale can induce significant fluctuations in device electrical performance.

    The prediction of transport properties in Josephson junctions based on first principle and machine learning · 2026 · DOI

  • Sridhar, True superconductivity at near ambient temperature has not been confirmed by Dasenbrock-Gammon et al. The necessity of the slow rate especially for the temperature range of 20–60 K is not well understood yet but may be related to absorbed oxygen in the PnM sample since oxygen is known to undergo an antiferromagnetic transition below 54 K and to change its solid structure (β ⇆ γ phase) at 43 K.

    Evidence for room temperature superconductivity associated with a first-order phase transition · 2026 · DOI

  • S11(a) and (b), the transient response under high-fluence excitation below Tc may include a contribution from the PG component; therefore, the robustness of the evaluation of F SC th needs to be examined.

    Possible Spatial Correlation between Superconducting and Pseudogap Dynamics in a Bi-based Cuprate · 2026 · DOI

  • The details of the coupling between superconductivity and magnetism in cuprates remain elusive. The precise origin of the spin pseudogap and the mechanism that is strongly influenced by reductive annealing are not well understood.

    Emergence of low-energy spin waves in superconducting electron-doped cuprates · 2026 · DOI

  • The paper suggests future research directions in sub-threshold electronics and nuclear lubrication. The paper suggests the possibility of achieving ballistic transport at room temperature.

    Viscous Electrodynamics and the Rheological Nature of Superconductivity: From Momentum Dissipation to the Shlyapik Phase Transition · 2026 · DOI

  • The sample size is limited, with typical dimensions of 4×4×0.3 mm^3. The measurement configuration may be affected by unintentional sample misalignment with respect to H. The study only explores the field-induced phase transitions in Na3Ni2BiO6, and does not consider other frustrated magnets.

    Cascade of magnetic-field-induced quantum spin states in a spin-1 honeycomb magnet · 2026 · DOI

  • The mechanism behind the enhanced superconductivity in hole-doped SmNiO2 is not well understood. The electronic structure and magnetic interactions in the new system need to be elucidated.

    Persistent paramagnons in high-temperature infinite-layer nickelate superconductors · 2026 · DOI

  • The simulations were run for unusually long times compared to typical MD studies. The structures at 700 and 750 K still exhibited incomplete convergence. The potential is limited to the description of the orthorhombic to tetragonal transition.

    The diffusion-driven orthorhombic to tetragonal transition in YBa2Cu3O7 derived with a machine learning interatomic potential · 2026 · DOI

  • The SFS trilayer presents several drawbacks that limit their integration into highly coherent circuits. There is a need for a comprehensive understanding of the transport properties and electrodynamics of SIsFS Josephson junctions.

    Phase dynamics and dissipation in tunnel ferromagnetic Josephson junctions · 2026

  • For the first model, the main open problem is to embed the effective description into an explicit class of large-c CFTs, so that the quartic coefficients Bβ(∆) and BL(∆) can be computed directly from boundary correlators.

    Field Theory Models for a Holographic Superconductor in Two Dimensions · 2026

  • Future research could focus on experimental verification of the predicted signatures of Gaussian fluctuations. Further theoretical work could explore the implications of the findings for the development of superconducting materials and devices.

    Signatures of Gaussian superconducting fluctuations in nonlocal noise magnetometry · 2026

  • The precise nature of the fluctuations in high-temperature superconductors is not yet settled. There is a need for additional routes to elucidate the nature of fluctuations in these systems.

    Signatures of Gaussian superconducting fluctuations in nonlocal noise magnetometry · 2026

  • The sample dimensions are limited to 8-µm-wide, 30-µm-long, and 20-nm-thick NbN strips. The energy dissipation is calculated to be higher when the sample is resistive.

    The Ultrafast Superconducting Diode Effect · 2026

  • Future research should focus on the experimental verification of the results. Future research should explore the implications of the results for the design of new materials.

    Altermagnetism and weak ferromagnetism · 2026 · DOI

  • The gap is the lack of understanding of the microscopic origin of weak ferromagnetism and AHE. The gap is the lack of understanding of the interrelations between these phenomena.

    Altermagnetism and weak ferromagnetism · 2026 · DOI

  • To develop new methods that can capture the non-perturbative phenomena in these systems. To reexamine previously collected INS data on triangular lattice compounds in the UUD phase.

    Nonperturbative semiclassical spin dynamics for ordered quantum magnets · 2026 · DOI

  • The paper suggests that current measurements detect an effective mass influenced by local manifold fluctuations.

    Viscous Electrodynamics and the Rheological Nature of Superconductivity: From Momentum Dissipation to the Shlyapik Phase Transition · 2026 · DOI

  • Extending the model to incorporate magnetic field dependence, fluctuation effects, and more detailed material-specific mappings. Exploring design spaces for superconducting materials using the model. Using the model to guide experimental efforts in the search for practical room-temperature superconductors.

    Storm-Chaser Physics: The Blackwell Channel and the Emergence of Room-Temperature · 2026 · DOI

  • Expanding the dataset size and structural diversity to improve the model's generalization ability. Incorporating physics-informed features to enhance interpretability and extrapolation capabilities. Demonstrating the transferability of the framework to other material systems.

    The prediction of transport properties in Josephson junctions based on first principle and machine learning · 2026 · DOI

  • Further study of the interplay between frustrated magnetism and unconventional superconductivity is required - Experimental verification of the predicted Josephson diode effect and anomalous vortices…

    Anisotropic Josephson Coupling of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>d</mml:mi> </mml:mrow> </mml:math> Vectors in Triplet Superconductors Arising from Frustrated Spin Textures · 2026 · DOI

  • Further development of the ACE potential to describe other phases of YBCO. Exploration of the potential's ability to describe the behavior of YBCO in various operating conditions. Application of the potential to optimize the performance of YBCO-based superconducting magnets.

    The diffusion-driven orthorhombic to tetragonal transition in YBa2Cu3O7 derived with a machine learning interatomic potential · 2026 · DOI

  • Further experimental and theoretical studies of the correlation-driven stripe order. Investigation of the role of nesting in the charge order of La$_4$Ni$_3$O$_{10}$. Exploration of the potential applications of nickelate superconductors.

    Imaging stripe dynamics in trilayer nickelate La$_4$Ni$_3$O$_{10}$ · 2026

Most-cited papers in Physics of Superconductivity and Magnetism

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Open questions raised by papers listed on this page include: (1) The relationship between the 2D phase-slip physics described here and the extensive barrier scaling ∆FOV ∼ (w/ξ)∆F 2D from alternative approaches remains unresolved (“Thermal phase slips in superconducting films”, 2026); (2) A phenomenological model that can organize experimental observables in a manner that is both interpretable and invertible is needed (“Storm-Chaser Physics: The Blackwell Channel and the Emergence of…”, 2026); (3) The details of the coupling between superconductivity and magnetism in cuprates remain elusive (“Emergence of low-energy spin waves in superconducting electron-doped cuprates”, 2026); (4) The mechanism behind the enhanced superconductivity in hole-doped SmNiO2 is not well understood (“Persistent paramagnons in high-temperature infinite-layer nickelate…”, 2026); (5) Future research should focus on the experimental verification of the results (“Altermagnetism and weak ferromagnetism”, 2026). 150 gap statements have been mined from Physics of Superconductivity and Magnetism papers in our 4.5M-paper local library, which holds 995 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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