Details

Autor(en) / Beteiligte

• Zheng, Liangliang
• Frandsen, Benjamin A
• Wu, Changwei
• Yi, Ming
• Wu, Shan
• Huang, Qingzhen
• Bourret-Courchesne, Edith
• Simutis, G
• Khasanov, R
• Yao, Dao-Xin
• Wang, Meng
• Birgeneau, Robert J

Titel

Gradual enhancement of stripe-type antiferromagnetism in the spin-ladder material BaFe2S3 under pressure

Ist Teil von

• Physical review. B, 2018-11, Vol.98 (18), p.180402(R)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Quelle

APS_美国物理学会期刊

Beschreibungen/Notizen

• We report pressure-dependent neutron diffraction and muon spin relaxation/rotation measurements combined with first-principles calculations to investigate the structural, magnetic, and electronic properties of BaFe2S3 under pressure. The experimental results reveal a gradual enhancement of the stripe-type ordering temperature with increasing pressure up to 2.6 GPa and no observable change in the size of the ordered moment. The ab initio calculations suggest that the magnetism is highly sensitive to the Fe-S bond lengths and angles, clarifying discrepancies with previously published results. In contrast to our experimental observations, the calculations predict a monotonic reduction of the ordered moment with pressure. We suggest that the robustness of the stripe-type antiferromagnetism is due to strong electron correlations not fully considered in the calculations.