Is a negative resistor a superconductor that does not require being cooled down to get 0 resistance?
Title explains it, 


not to me


  is it possible to create a superconducter using negative resistor oscillator/amplifier?


No. A superconductor is passive component that has 0 resistance. There are circuits that behave as a negative resistance, but they are active circuits that require power. Hence is makes no sense to use them as a sort of replacement for superconductors: superconductors are used when massive currents must flow without losing energy (power).


  As superconducters are conducters with 0 ressistance. 


that is true


  Isn't a Amplifier a superconducter?


no. by now you should understand why.