Details

Autor(en) / Beteiligte

• Lee, Nara
• Oh, Dong Gun
• Choi, Sungkyun
• Moon, Jae Young
• Kim, Jong Hyuk
• Shin, Hyun Jun
• Son, Kwanghyo
• Nuss, Jürgen
• Kiryukhin, Valery
• Choi, Young Jai

Titel

Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co4Ta2O9

Ist Teil von

• Scientific reports, 2020-07, Vol.10 (1), p.12362-12362, Article 12362

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Abstract Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for innovative technological applications. A class of antiferromagnetic honeycomb lattices compounds, A 4 B 2 O 9 (A = Co, Fe, Mn; B = Nb, Ta), have been explored owing to the occurrence of linear magnetoelectricity. From our investigation of magnetoelectricity on single crystalline Co 4 Ta 2 O 9 , we discovered strongly nonlinear and antisymmetric magnetoelectric behavior above the spin-flop transition for magnetic fields applied along two orthogonal in-plane directions. This observation suggests that two types of inequivalent Co 2+ sublattices generate magnetic-field-dependent ferroelectric polarization with opposite signs. The results motivate fundamental and applied research on the intriguing magnetoelectric characteristics of these buckled-honeycomb lattice materials.