Manipulating magnetism and transport properties of EuCd${}_2$P${}_2$ 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 EuCd${}_2$P${}_2$, which is transformed from an A-type antiferromagnet ($T_{\mathrm{N}}$ = 11 K) exhibiting colossal magnetoresistance into a ferromagnet ($T_{\mathrm{C}}$ = 47 K) with metallic behavior. The dramatic alteration results from a low hole concentration of $10^{19}$ 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 EuCd${}_2$P${}_2$. 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 EuCd${}_2$P${}_2$ make it a potential candidate for spintronics.

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Cited by in corpus (5)

• Unusual magnetic and transport properties in the Zintl phase Eu${}_{11}$Zn${}_6$As${}_{12}$
• Recent advances in understanding and manipulating magnetic and electronic properties of Eu$M_2{X}_2$ ($M$ = Zn, Cd; $X$ = P, As)
• Interplay of magnetic ordering and charge transport in a distorted ScAl${}_3$C${}_3$-type GdZn${}_3$As${}_3$
• Structural design and multiple magnetic orderings of the intergrowth compound Eu${}_2$CuMn${}_2$P${}_3$
• Design, synthesis, and physical properties of the intergrowth compound Eu${}_2$CuZn${}_2$As${}_3$