2003/01/21 by B. J. Powell, James F. Annett, B. L. Gyorffy +1
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-8984/15/14/102
published as J. Phys.:Condens. Matter 15 (2003) L235-L241 · 7 pages, 4 figures, submitted to J. Phys. Cond. Mat
arxiv created 2003/01/21 · openalex publication_date 2003/03/31 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We propose a simple picture for the occurrence of superconductivity and the pressure dependence of the superconducting critical temperature, T SC , in ZrZn 2 . According to our hypothesis the pairing potential is independent of pressure, but the exchange splitting, E xc , leads to a pressure dependence in the (spin dependent) density of states at the Fermi level, D σ (ε F ). Assuming p-wave pairing T SC is dependent on D σ (ε F ) which ensures that, in the absence of non-magnetic impurities, T SC decreases as pressure is applied until it reaches a minimum in the paramagnetic state. Disorder reduces this minimum to zero, this gives the illusion that the superconductivity disappears at the same pressure as ferromagnetism does.