超导：2025–2026 年度综述

An annual survey of the cond-mat.supr-con arXiv category, covering research published from September 2025 – August 2026. Built on a close-reading set of 132 papers and organised into 37 chapters, it maps the year by the field's research sub-directions.

Book framework (share of the year's output):

• Heterostructure and Device Physics of Superconductors (46.4%) — This cluster focuses on superconducting heterostructures, devices, and hybrid systems, exploring pairing symmetry, diode effects, and single-photon detection.
• Unconventional Superconductivity and Competing Orders (22.0%) — This cluster investigates unconventional superconducting mechanisms, charge density waves, and competing electronic orders in correlated materials.
• Josephson Junctions and Superconducting Diode Effects (9.7%) — This cluster examines Josephson junctions, nonreciprocal supercurrents, and diode effects induced by symmetry breaking and magnetic fields.
• Nickelates, Graphene, and High-Temperature Superconductivity (6.9%) — This cluster explores recent discoveries in nickelate superconductors, twisted graphene, and high-temperature superconducting materials.
• Topological Superconductivity and Majorana Modes (3.4%) — This cluster addresses topological superconductivity, Majorana zero modes, and their interplay with spin-orbit coupling and lattice effects.
• Nonequilibrium Dynamics and BCS Theory Extensions (2.5%) — This cluster focuses on nonequilibrium quasiparticle dynamics, nonlinear response, and extensions of BCS theory to novel regimes.
• High-Pressure Superconductivity and Hydride Materials (2.5%) — This cluster investigates superconductivity under extreme pressure, including hydride materials and ambient-pressure stabilization strategies.
• Thin Films, Substrates, and Structural Properties (2.4%) — This cluster examines structural, electronic, and superconducting properties of thin films and bulk materials, including substrate effects.
• Scanning Tunneling Spectroscopy and Superfluid Gaps (1.8%) — This cluster uses scanning tunneling microscopy and spectroscopy to probe superconducting gaps, vortex lattices, and superfluid properties.
• Quantum Computing and Superconducting Circuits (1.3%) — This cluster addresses quantum states, Josephson dynamics, and cryoelectronics for superconducting quantum computing applications.
• Fundamental Physics and Interfacial Phenomena (1.1%) — This cluster explores fundamental questions in condensed matter physics, including interfacial polarons, topological states, and Nobel-related topics.

Each sub-direction is covered across three chapters — how it framed its questions, the strength of its key findings, and its open debates and frontiers — so the reader gets a traceable picture of what this part of the field actually produced over the year.