Manipulating magnetism and transport properties of EuCd2P2 with a low carrier concentration
Abstract
Materials that exhibit strongly coupled magnetic order and electronic properties are crucial for both fundamental research and technological applications. However, finding a material that not only shows remarkable magnetoresistive responses but also has an easily tunable ground state remains a challenge. Here, we report successful manipulation of the magnetic and transport properties of EuCd2P2, which is transformed from an A-type antiferromagnet (TN = 11 K) exhibiting colossal magnetoresistance into a ferromagnet (TC = 47 K) with metallic behavior. The dramatic alteration results from a low hole concentration of 1019 cm-3 induced by changing the growth conditions. Electronic structure and total energy calculations confirm the tunability of magnetism with a small carrier concentration for EuCd2P2. It is feasible to switch between the magnetic states by using field-effect to control the carrier density, thereby changing the magneto-electronic response. The controllable magnetism and electrical transport of EuCd2P2 make it a potential candidate for spintronics.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.