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Vanishing Altermagnetism and Emergent Ferromagnetism at the Two-Dimensional Limit of CrSb
Yunlong Liu, Zixuan Wu, Qinxi Liu +8
Altermagnets offer a promising route to spintronic devices by combining spin-split electronic states with zero net magnetization, but how reduced dimensionality reshapes their magn…
Distinct Surface and Bulk Superconductivity in the Kagome Superconductor SrSn
Qun Zhu, Yong-Wei Wang, Ji-Hai Zhang +6
Surface and bulk superconductivity may possess fundamentally different superconducting properties in quantum materials with nontrivial electronic structures, yet their superimposed…
Tip-Tuned Renormalization-Group Spectroscopy Unmasks a False-positive Topological Superconducting Vortex
Zhenhua Zhu, Qun Zhu, Yong-Wei Wang +6
Clean, nonsplit vortex zero-bias peaks (ZBPs) can be misinterpreted as Majorana zero modes (MZMs), making static scanning tunneling microscopy intrinsically ambiguous. Here we use…
Antiferromagnetic Quantum Criticality in Infinite-Layer Cuprates Sr1-xNdxCuO2
Bin-Jie Wu, Ze-Xian Deng, Guang-Ran Wei +8
The interplay between quantum criticality and Fermi surface reconstruction is central to elucidating the phase diagram of high-temperature cuprate superconductors. While studies on…
Spectroscopic Studies of two-dimensional Superconductivity
Qiang-Jun Cheng, Xu-Cun Ma, Qi-Kun Xue +1
Two-dimensional superconductivity has become a major frontier in condensed matter physics. It holds the key to the mechanism of high-temperature superconductors and offers an excep…
Intrinsic translational symmetry-breaking charge stripes in underdoped iron pnictides
Qiang-Jun Cheng, Cong-Cong Lou, Yong-Wei Wang +4
Despite being well established in cuprates, an intrinsic translational symmetry-breaking charge order has not been clearly identified in iron-based superconductors. Using spectrosc…
Topological Semimetal Transport Modulated by Interstitial Fe in Ba(FeCo)_2$ Superconductors
Ze-Xian Deng, Qiang-Jun Cheng, Jing Jiang +14
Topological semimetals are renowned for exhibiting large, unsaturated magnetoresistance arising from ultrahigh carrier mobility and electron-hole compensation. However, such behavi…
Intertwined Charge Stripes and Majorana Zero Modes in An Iron-Based Superconductor
Yu Liu, Li-Xuan Wei, Qiang-Jun Cheng +12
In type-II superconductors, magnetic fields modulate the amplitude and phase of the superconducting order parameter, forming quantized vortices where superconductivity is locally s…