Altermagnetic superconducting diode effect from non-collinear compensated magnetism in Mn$_3$Pt
Hearne Institute of Theoretical Physics, Department of Physics & Astronomy, Louisiana State University（路易斯安那州立大学）；Department of Physics, Indian Institute of Technology Delhi（印度理工学院德里分校）；Institute for Theoretical Physics III, University of Stuttgart（斯图加特大学）
Constantin Schrade, Sujit Manna, Mathias S. Scheurer
Altermagnets have recently emerged as a distinct class of magnetic systems that exhibit spin splitting of electronic bands while retaining zero net magnetization. This unique combination makes them a promising platform for time-reversal symmetry-breaking superconducting phenomena, although identifying concrete material platforms remains an important open challenge. Here, we develop a theory for the superconducting diode effect observed experimentally in a Mn$_3$Pt-superconductor heterostructure. Using both a symmetry analysis and model calculations on the breathing kagome lattice, we show how the altermagnetic spin textures in Mn$_3$Pt generate a spin splitting of the electronic bands that remains magnetization-free even in the presence of spin-orbit coupling and, upon taking into account the proximity coupling across the interface, produces a superconducting diode effect. We also demonstrate that the angular dependence of the critical current provides a probe of the magnetic order. We hope that our work will contribute to the understanding and further discovery of candidate materials for novel altermagnet-superconductor hybrid devices.
Néel-Vector-Dependent Altermagnetic Spin Splitting in the One-Dimensional Limit
Thermal Science Research Center, Shandong Institute of Advanced Technology（山东先进技术研究院热科学研究中心）；Faculty of Applied Sciences, Macao Polytechnic University（澳门理工学院应用科学学院）
Ferroelectric Altermagnetic Chern Insulator in magnetic field: electrical control of the Chern number
International Research Centre Magtop, Institute of Physics, Polish Academy of Sciences（波兰科学院物理研究所磁顶国际研究中心）；Department of Physics, University of Guilan（吉兰大学物理系）
Angle-Dependent Magnetoresistance Induced by Interface-Generated Spin Current in RuO$_2$/Permalloy Heterostructures
Institute of Physics, Johannes Gutenberg-University Mainz（美因茨约翰内斯·古腾堡大学物理研究所）；Department of Physics, Indiana University（印第安纳大学物理系）；Center for Spinelectronic Materials and Devices, Department of Physics, Bielefeld University（比勒费尔德大学自旋电子材料与器件中心）；Department of Physics, Center for Quantum Spintronics, Norwegian University of Science and Technology（挪威科技大学量子自旋电子学中心物理系）
Second-order topological insulator induced by compensated altermagnetism without bulk spin splitting
College of Physics, Hebei Normal University（河北师范大学物理学院）；International Center for Quantum Materials, School of Physics, Peking University（北京大学物理学院量子材料科学与工程中心）；Hefei National Laboratory（合肥国家实验室）
Josephson diode and spin-valve effects on the surface of altermagnet CrSb
Institute of Solid State Physics of the Russian Academy of Sciences（俄罗斯科学院固体物理研究所）；V.L. Ginzburg Research Centre for High-Temperature Superconductivity and Quantum Materials, P.N. Lebedev Physical Institute of RAS（俄罗斯科学院列别杰夫物理研究所V.L.金兹堡高温超导与量子材料研究中心）
Reversible field-free superconducting diode effect controlled by an antiferromagnet
Institute of Physics, Czech Academy of Sciences（捷克科学院物理研究所）；Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague（布拉格捷克理工大学核科学与物理工程学院）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Faculty of Mathematics and Physics, Charles University（查理大学数学与物理学院）
Engineering Altermagnetism via Layer Shifts and Spin Order in Bilayer MnPS$_3$
Universidad de Antofagasta（安托法加斯塔大学）；Technische Universität Dresden（德累斯顿工业大学）；Universidad Técnica Federico Santa María（费德里科·圣塔玛丽亚技术大学）；Universidad de Chile（智利大学）；Dresden University of Technology, Institute for Solid State and Materials Physics（德累斯顿工业大学固体与材料物理研究所）
Spin-Locked Helical Currents and Charge-Neutral Spin-Channel Pumping in Altermagnetic Nanotubes
Thermal Science Research Center, Shandong Institute of Advanced Technology（山东先进技术研究院热科学研究中心）；School of Science, Hebei University of Technology（河北工业大学理学院）；School of Physics, Shandong University（山东大学物理学院）
Surface-State-Driven Anomalous Hall Effect in Altermagnetic MnTe Films
The Pennsylvania State University（宾夕法尼亚州立大学）；Weizmann Institute of Science（魏茨曼科学研究所）；Binghamton University（宾汉姆顿大学）；STFC Rutherford Appleton Laboratory（英国科学与技术设施理事会鲁瑟福阿普尔顿实验室）；National Institute of Standards and Technology（美国国家标准与技术研究院）
Unconventional Altermagnetism in Quasicrystals: A Hyperspatial Projective Construction
School of Physics, Peking University（北京大学物理学院）；Collaborative Innovation Center of Quantum Matter（量子物质协同创新中心）；Center for High Energy Physics, Peking University（北京大学高能物理中心）
Pressure-Induced Metal-Insulator and Paramagnet-Altermagnet Transitions in Rutile OsO2 Single Crystals
Beihang University（北京航空航天大学）；Songshan Lake Materials Laboratory（松山湖材料实验室）；Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；High Energy Accelerator Research Organization (KEK)（高能加速器研究机构）；Southern University of Science and Technology（南方科技大学）
Direct demonstration of time-reversal-symmetry-breaking spin injection from a compensated magnet
CIC nanoGUNE BRTA（nanoGUNE BRTA 研究中心）；University of the Basque Country (UPV/EHU)（巴斯克大学）；Institute of Physics, Czech Academy of Sciences（捷克科学院物理研究所）；Charles University（查理大学）；TUD University of Technology Dresden（德累斯顿工业大学）；Universidad del Norte（北方大学）；Johannes Gutenberg Universität Mainz（美因茨约翰内斯古腾堡大学）；UdelaR（乌拉圭共和国大学）；University of Jyvaskyla（耶瓦斯基莱大学）；Aix-Marseille Univ.（艾克斯-马赛大学）
All-electrical dephasing-protected spin qubits in altermagnets
Consejo Superior de Investigaciones Científicas (CSIC)（西班牙高等科学研究委员会）；Quantum Advanced Research Center (QuARC)（量子先进研究中心）；Instituto de Ciencia de Materiales de Madrid (ICMM)（马德里材料科学研究所）；Nordita（北欧理论天体物理学研究所）；KTH Royal Institute of Technology（瑞典皇家理工学院）；Stockholm University（斯德哥尔摩大学）
All optical excitation of spin polarization in d-wave altermagnets
RPTU University Kaiserslautern-Landau（凯泽斯劳滕-兰道 RPTU 大学）；Johannes Gutenberg University Mainz（美因茨约翰内斯·古腾堡大学）；Universidade de Santiago de Compostela（圣地亚哥-德孔波斯特拉大学）；Tohoku University（东北大学）
Néel-Vector-Orientation Induced Direction-Robust Spin Filtering in Two-Dimensional Altermagnets
Shandong Institute of Advanced Technology（山东高等技术研究院）；Macao Polytechnic University（澳门理工大学）；Institute for Advanced Technology, Shandong University（山东大学先进技术研究院）；Uppsala University（乌普萨拉大学）
Theory of Spin-splitter Magnetoresistance in Altermagnets
University of Jyväskylä（于韦斯屈莱大学）；Centro de Física de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU（材料物理中心（CFM-MPC），CSIC-巴斯克国立/瓦斯科大学混合中心）；Donostia International Physics Center (DIPC)（圣塞巴斯蒂安国际物理中心）；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯克，巴斯克科学基金会）
Band topology and symmetry-driven magneto-optical response in two-dimensional d-wave altermagnets with staggered spin-orbit coupling
International Research Centre Magtop, Institute of Physics, Polish Academy of Sciences（波兰科学院物理研究所）；Department of Physics, University of Guilan（吉兰大学物理系）；Institute of Theoretical Physics, Jagiellonian University（雅盖隆大学理论物理研究所）
Atom-selective spin-polarized transport in a charge-ordered altermagnet
Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences（中国科学院合肥物质科学研究院固体物理研究所材料物理重点实验室）；University of Science and Technology of China（中国科学技术大学）；Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, School of Materials Science and Engineering, Anhui University（安徽大学材料科学与工程学院安徽省磁性功能材料与器件重点实验室）；Frontier Institute of Chip and System, State Key Laboratory of Integrated Chips and Systems, Zhangjiang, Fudan International Innovation Center, Fudan University（复旦大学张江国际创新中心集成芯片与系统前沿研究院集成芯片与系统国家重点实验室）；Anhui Key Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences（中国科学院合肥物质科学研究院强磁场实验室安徽省低能量子材料与器件重点实验室）；Collaborative Innovation Center of Microstructures, Nanjing University（南京大学微观结构协同创新中心）；University of Electronic Science and Technology of China（电子科技大学）
