Teacher Blogger

John Robert Schrieffer John Robert Schrieffer was an American physicist who, along  with John Bardeen and Leon Cooper, shared the 1972 Nobel Prize in Physics for developing the BCS theory, the first successful quantum theory of superconductivity. For the details of BCS theory, read the article BCS Theory of Superconductivity.  https://retnacpn.blogspot.com/2023/09/bcs-theory-of-superconductivity.html . Life and career: Schrieffer was born on May 31, 1931, in Oak Park, Illinois, and his parents were Louise (Anderson) and John Henry Schrieffer. His family relocated  to Manhasset, New York, in 1940. In 1947, they moved to Eustis, Florida. Schrieffer's  father was a former pharmaceutical salesman. He began a career in the citrus industry in Florida. During  childhood, Schrieffer enjoyed playing with homemade rockets and ham radio. This hobby sparked his interest in electrical engineering. After graduating from Eustis High School in 1949 , Schrieffer majored in electrical engineering fo

  Introduction: Bardeen-Cooper-Schrieffer theory (BCS theory) is the first microscopic theory of superconductivity. Cooper had discovered that electrons are in pairs in a superconductor and named as Cooper pairs. The theory describes superconductivity as an effect caused by the condensation (I will talk briefly about condensation later in this article) of the Cooper pair. The motion of all the Cooper pairs within a single superconductor constitutes a system that functions as a single entity. Applying an electrical voltage to the superconductor causes all Cooper pairs to move, forming a current. Even in the absence of voltage, the current flow continues indefinitely. The reason is that the Cooper pairs encounter no opposition inside the conductor. We should stop all the cooper pairs simultaneously to cease the current flow. As the superconductor is warmed, its Cooper pairs separate into individual electrons, and the material becomes normal or non-superconducting. Superconductors abrupt