When was the  Soviet, Russian and American theoretical physicist died who describe the magnetic phase diagram of type-II superconductors of Onsager?
Alexei Alexeyevich Abrikosov Alexei Alexeyevich Abrikosov (Russian: Алексе́й Алексе́евич Абрико́сов ; 25 June 1928 – 29 March 2017) was a Soviet, Russian and American theoretical physicist whose main contributions are in the field of condensed matter physics. He was awarded the Nobel Prize in Physics in 2003.
Yuri Raizer Yuri Petrovich Raizer (Russian: Юрий Петрович Райзер, born January 26, 1927 in Kharkiv, USSR) is a prominent Soviet and Russian theoretical physicist. He received his PhD degree in 1953 and his Doctor of Sciences degree in 1959. He is Senior Research Fellow with Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, Moscow, Russia where he has been serving as a head of the Division of Physics of gas dynamic processes since 1965. Additionally, he has been professor at the Moscow Institute of Physics and Technology since 1968.