8 papers
From Embeddings to Dyson Series: Transformer Mechanics as Non-Hermitian Operator Theory
Po-Hao Chang
Transformer architectures are typically described in algorithmic and statistical terms, leaving their internal mechanics without a familiar structural language for researchers trai…
Modeling of a twisted-Kagome HoAgGe spin ice using Reduced-Configuration-Space Search and Density Functional Theory
Gunnar F. Schwertfeger, Po-Hao Chang, Predrag Nikolic +1
The Kagome lattice is a 2D network of corner sharing triangles found in several rare earth materials resulting in a complicated and often frustrated magnetic system. In the last de…
Is altermagnetism in vanadium oxychalcogenides a lost cause?
Bishal Thapa, Po-Hao Chang, Kirill Belashchenko +1
Vanadium-based oxychalcogenide compounds with the inverse Lieb-lattice (ILL) structural pattern have recently been proposed as candidate altermagnets (AM). However, early studies p…
Anisotropy, frustration and saddle point in the twisted Kagome antiferromagnet ErPdPb
Resham Babu Regmi, Sk Jamaluddin, Y. Lee +14
The kagome lattice, with its inherent geometric frustration, provides a rich platform for exploring intriguing magnetic phenomena and topological electronic structures. In reduced-…
Inverse Lieb Materials: Altermagnetism and More
Po-Hao Chang, Igor I. Mazin, Kirill D. Belashchenko
The Lieb lattice, originally proposed for cuprate superconductors, has gained new attention in the emerging field of altermagnetism as a minimal analytical model for the latter. Wh…
Doping-induced Spin Reorientation in Kagome Magnet TmMn6Sn6
Mohamed El Gazzah, Po-Hao Chang, Y. Lee +7
The kagome-lattice compounds RMn6Sn6 (R is a rare earth element), where the Mn atoms form a kagome net in the basal plane, are currently attracting a great deal of attention as the…