Space-filling, multifractal, localized thermal spikes in Si, Ge and ZnO Shoaib Ahmad, Muhammad Sabtain Abbas, Muhammad Yousuf, Sumera Javeed, Sumaira Zeeshan and Kashif Yaqub Eur. Phys. J. D, 72 4 (2018) 70 Published online: 30 April 2018 DOI: 10.1140/epjd/e2018-80149-5