2017/04/04 by Qingyan Wang, Wenhao Zhang, Weiwei Chen +12
Materials Science · Physics and Astronomy · #Condensed matter physics #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetoresistance #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Superconducting transition temperature #Superconductivity #Thermodynamics #Transition temperature #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1088/2053-1583/aa8165
published as 2D Mater. 4, 034004 (2017)
arxiv created 2017/04/04 · openalex publication_date 2017/08/14 · arxiv updated 2017/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The discovery of high-temperature superconductivity in FeSe/STO has trigged great research interest to reveal a range of exotic physical phenomena in this novel material. Here we present a temperature dependent magnetotransport measurement for ultrathin FeSe/STO films with different thickness and protection layers. Remarkably, a surprising linear magnetoresistance (LMR) is observed around the superconducting transition temperatures but absent otherwise. The experimental LMR can be reproduced by magnetotransport calculations based on a model of magnetic field dependent disorder induced by spin fluctuation. Thus, the observed LMR in coexistence with superconductivity provides the first magnetotransport signature for spin fluctuation around the superconducting transition region in ultrathin FeSe/STO films.