Magnetoelectric spectroscopy of spin excitations in LiCoPO4

no code implementations • 1 Feb 2021 • Vilmos Kocsis, Sándor Bordács, Yusuke Tokunaga, Johan Viirok, Laur Peedu, Toomas Rõõm, Urmas Nagel, Yasujiro Taguchi, Yoshinori Tokura, István Kézsmárki

We have studied spin excitations in a single-domain crystal of antiferromagnetic LiCoPO4 by THz absorption spectroscopy.

Strongly Correlated Electrons

Strong magneto-optical effects in ACr2O4 A=Fe, Co spinel oxides generated by tetrahedrally coordinated transition metal ions

no code implementations • 1 Feb 2021 • Vilmos Kocsis, Sándor Bordács, Joachim Deisenhofer, László F. Kiss, Kenya Ohgushi, Yoshio Kaneko, Yoshinori Tokura, István Kézsmárki

Magneto-optical effects have been investigated over the infrared{visible spectral range in ACr2O4 (A = Fe, Co) spinel oxides with non-collinear spin orders in their ground states.

Strongly Correlated Electrons

Unusual heat transport of the Kitaev material Na$_2$Co$_2$TeO$_6$: putative quantum spin liquid and low-energy spin excitations

no code implementations • 28 Jan 2021 • Xiaochen Hong, Matthias Gillig, Richard Hentrich, Weiliang Yao, Vilmos Kocsis, Arthur R. Witte, Tino Schreiner, Danny Baumann, Nicolás Pérez, Anja U. B. Wolter, Yuan Li, Bernd Büchner, Christian Hess

We studied the field dependent thermal conductivity ($\kappa$) of Na$_2$Co$_2$TeO$_6$, a compound considered as the manifestation of the Kitaev model based on the high-spin $d^7$ Co$^{2+}$ ions.

Strongly Correlated Electrons