2009/07/09 by Kasper Peeters, Jonathan Powell, Marija Zamaklar · 31 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Conformal map #Critical phenomena #Exponential function #Fermion #Holography #Jump #Physics of Superconductivity and Magnetism #Superconductivity #Topological Materials and Phenomena #hep-th
paper · pdf · doi:10.1088/1126-6708/2009/09/101
published in Journal of High Energy Physics 2009(09), 101 (Springer Nature) · 24 pages, many figures
arxiv created 2009/07/09 · openalex publication_date 2009/09/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We explore a class of holographic superconductors built using non-abelian condensates on probe branes in conformal and non-conformal backgrounds. These are shown to exhibit behaviour of the specific heat which resembles that of heavy fermion compounds in the superconducting phase. Instead of showing BCS-like exponential behaviour, the specific heat is polynomial in the temperature. It exhibits a jump at the critical temperature, in agreement with real-world superconductors. We also analyse the behaviour of the energy gap and the AC and DC conductivities, and find that the systems can be either semi-conducting or metallic just above the critical temperature.