Measurements of magnetoresistivity and magnetization of Sr2RuO4 single crystals

• Published in: Physica. C, Superconductivity Vol. 341-348; pp. 795 - 796
• Main Authors: Kim, JunHo, Dilley, N.R., Dickey, R.P., Amann, A., Sirvent, C., Maple, M.B., Kawano, Hazuki, Dai, Pengcheng
• Format: Journal Article
• Language: English
• Published: 01.11.2000
• ISSN: 0921-4534
• DOI: 10.1016/S0921-4534(00)00697-3

Authors report measurements of magnetoresistivity, dc magnetization, and ac magnetic susceptibility on several single crystal samples of Sr2RuO4 (Tc = 1 K). Magnetoresistivity was measured at 0.1-4 K, and in applied magnetic fields up 6 T. The magnetic field and current were applied both parallel and perpendicular to the c-axis of the crystal. From the measurements, authors determined the superconducting upper critical field, Hc2(T). Authors observed that in magnetic fields above Hc2, and for transport currents both in the ab-plane and along the c-axis, Sr2RuO4 exhibits a metallic resistivity down to 0.1 K. Authors have also studied the magnetic phase diagram by measuring dc magnetization M(H) at 0.4-2 K and in applied fields up to 60 mT along the c-axis of the crystal using a Faraday magnetometer. Authors discuss the resistively and magnetically determined superconducting phase diagrams along with ac susceptibility data. 9 refs.