Spin and Orbital Frustration in MnSc 2S 4 and FeSc 2S 4

Fritsch Veronika; Hemberger Joachim; Buttgen Norbert; Scheidt Ernst Wilhelm; Krug Von Nidda Hans Albrecht; Loidl Alois; Tsurkan Vladimir

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2023-09-13 15:25

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FRITSCH, Veronika, HEMBERGER, Joachim, BUTTGEN, Norbert, SCHEIDT, Ernst Wilhelm, KRUG VON NIDDA, Hans Albrecht, LOIDL, Alois, TSURKAN, Vladimir. Spin and Orbital Frustration in MnSc 2S 4 and FeSc 2S 4. In: Physical Review Letters, 2004, vol. 92, pp. 116401-1-116401-4. ISSN 0031-9007. DOI: https://doi.org/10.1103/PhysRevLett.92.116401

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Physical Review Letters

Volumul 92 / 2004 / ISSN 0031-9007

Spin and Orbital Frustration in MnSc ₂S ₄ and FeSc ₂S ₄

DOI:https://doi.org/10.1103/PhysRevLett.92.116401

Pag. 116401-1-116401-4

Fritsch Veronika¹², Hemberger Joachim¹, Buttgen Norbert¹, Scheidt Ernst Wilhelm¹, Krug Von Nidda Hans Albrecht¹, Loidl Alois¹, Tsurkan Vladimir¹³

¹ University of Augsburg,
² Los Alamos National Laboratory,
³ Institute of Applied Physics, Academy of Sciences of Moldova

Disponibil în IBN: 7 iulie 2023

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Rezumat

Spin and orbital frustration in normal cubic spinel compounds MnSc ₂S ₄ and FeSc ₂S ₄ were discussed. It was found that both compounds remain cubic and reveal strong magnetic frustration, down to the lowest temperature. It was suggested that MnSc ₂S ₄ is a spin-only system with no orbital degree of freedom. It was also suggested that FeSc ₂S ₄ exhibits orbital degeneracy which drastically increase quantum fluctuations and thereby supresses long-range magnetic order.

Cuvinte-cheie
Engineering controlled terms Crystal lattices, crystal structure, Degrees of freedom (mechanics), Ground state, Iron compounds, Magnetic anisotropy, magnetic susceptibility, Phase transitions, specific heat, SQUIDs Engineering uncontrolled terms Magnetic superexchange interactions, Spin-orbital liquid (SOL), Structural distortion Engineering main heading Manganese compounds