Is it legal to use Sci-Hub in Germany? I used to use this website to get the research papers that are not freely available online. So, passing the right name of any research work for this Russian website will derive the paper directly to your browser in Pdf format. 

I used this website for the last 2 years when I was doing my Masters in Jordan. Now, I am doing PhD in Germany, So is it known this website in this region ? is it legal to explore or download the results?
The paper of 

E. W. Steinhauer - Die Nutzung einer "Schattenbibliothek" im Licht des Urheberrechts Einige Überlegungen am Beispiel von Sci-Hub

says that downloading is probably illegal and viewing it in your browser is in some grey-area (although making this difference looks like some law-people did not understand the technicalities at all). 

But there does not seem to be one court case where one was prosecuted for just downloading such material. 
So if you still want to access the publications this way, then I suggest to use the following robust solution: Use the Tor browser or even the Tails operating system. In the latter you could save material with questionable copy-right license status in an encrypted file-system, then in Germany the law is pretty robust (compared to the USA or UK) around the "Aussageverweigerungsrecht", i.e. no authority can force you to decrypt it.