Contributors
ARPES Contributions: Milo Sprague (University of Central Florida), Mazharul Islam Monda (University of Central Florida), Anup Pradhan Sakhya (University of Central Florida, Hiroshima University), Arun K. Kumay (University of Central Florida), Himanshu Sheokand (University of Central Florida), Madhab Neupane (University of Central Florida)
DFT Contributions: Surasree Sadhukhan (George Mason University), Igor I. Mazin (George Mason University)
Keywords
ARPES, Altermagnetism, Intercalated TMDs
Description
The raw ARPES data presented in the paper Observation of Altermagnetic Spin-Splitting in an Intercalated Transition Metal Dichalcogenide, by M. Sprague et al. This is the minimal dataset needed to replicate and verify the results presented in this publication. The data is provided in Igor binary waves and can be viewed using the Igor Pro software environment.
Data Source
ARPES data was collected by Madhab Neupane and his team through the use of the SSRL beamline 5-2, located at SLAC National Accelerator Laboratory, which is supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-76SF00515, and beamline 10.0.1 at the Advanced Light Source (ALS), Lawrence Berkeley National Laboratory. The Advanced Light Source at Lawrence Berkeley National Laboratory (LBNL), which is supported under the DOE Contract No. DE-AC02- 05CH11231.
Abstract
Altermagnetism is a novel magnetic phase combining characteristics of both antiferromagnetism and ferromagnetic ordering. Despite growing theoretical interest in altermagnetic materials, reports of experimentally verified high-Néel-temperature layered compounds are limited or remain to be firmly established. In our manuscript, Observation of Altermagnetic Spin-Splitting in an Intercalated Transition Metal Dichalcogenide by M. Sprague et al, we present an angle-resolved photoemission spectroscopy and density functional theory study of Co1/4TaSe2, a compound we identify as a layered altermagnetic material. Our spin-resolved and spin-integrated angle-resolved photoemission spectroscopy measurements reveal an electronic band structure in excellent agreement with density functional theory calculations, demonstrating clear signatures of altermagnetic spin splitting at the Fermi surface. Here, we provide the minimal dataset needed to replicate and verify the results presented in this publication.
Date Created
2026
Release Date
7-14-2026
Document Type
Data
College
College of Sciences
Department
Physics
Recommended Citation
Sprague, Milo X. and Neupane, Madhab, "Observation of Altermagnetic Spin-Splitting in an Intercalated Transition Metal Dichalcogenide" (2026). Research Data and Datasets. 30.
https://stars.library.ucf.edu/datasets/30