Abstract
In this study, we calculate the diamagnetic susceptibility of p-Sn1-xEuxTe using a two-band model within the framework of the \(\vec {k} \cdot \vec {\pi }\) formalism for the host SnTe. The band edge states \(L_{62}^{-}\alpha (\beta )\) and \(L_{61}^{+}\alpha (\beta )\) are exactly diagonalized to get the energy eigenvalue and wave functions. The introduction of Eu impurity in SnTe significantly modulates the band structure. The Eu ion at x=0.02 gives band inversion and sets an upper limit for susceptibility measurement. The susceptibility of p \(-Sn_{1-x}Eu_{x}Te\) remains negative, ranging from \(-4.13 \times 10^{-7} emu/gm\) to \(-4.12 \times 10^{-7} emu/gm\) , reflecting the influence of strong spin–orbit interaction and band inversion. However, the change in susceptibility is minimal and remains nearly constant at T=300K. The calculated value of diamagnetic susceptibility, \(\chi _{dia}=-4.12 \times 10^{-7} emu/gm\) for \(Sn_{1-x}Eu_{x}Te\) , is in excellent agreement with similar materials like \(Sn_{1-x}Gd_{x}Te\) , where \(\chi _{dia}=-4.0 \times 10^{-7} emu/gm\) .
Graphic Abstract
