Helium-3 is a light, stable isotope of helium with two protons and one neutron. Other than protium, helium-3 is the only stable isotope of any element with more protons than neutrons. Helium-3 was discovered in 1939.
Superfluid helium-4 is the superfluid form of helium-4, an isotope of the element helium. A superfluid is a state of matter in which matter behaves like a fluid with zero viscosity. The substance, which looks like a normal liquid, flows without friction past any surface, which allows it to continue to circulate over obstructions and through pores in containers which hold it, subject only to its own inertia.
Pyotr Leonidovich Kapitsa or Peter Kapitza (Russian: Пётр Леонидович Капица, Romanian: Petre Capița was a leading Soviet physicist and Nobel laureate, whose research focused on low-temperature physics.
Liquid helium is a physical state of helium at very low temperatures at standard atmospheric pressures. Liquid helium may show superfluidity.
Burton Richter was an American physicist. He led the Stanford Linear Accelerator Center (SLAC) team which co-discovered the J/ψ meson in 1974, alongside the Brookhaven National Laboratory (BNL) team led by Samuel Ting for which they won Nobel Prize for Physics in 1976. This discovery was part of the November Revolution of particle physics. He was the SLAC director from 1984 to 1999.
Kenneth Geddes "Ken" Wilson was an American theoretical physicist and a pioneer in leveraging computers for studying particle physics. He was awarded the 1982 Nobel Prize in Physics for his work on phase transitions—illuminating the subtle essence of phenomena like melting ice and emerging magnetism. It was embodied in his fundamental work on the renormalization group.
Sir Anthony James Leggett is a British-American theoretical physicist and professor emeritus at the University of Illinois at Urbana-Champaign. Leggett is widely recognised as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognised by the 2003 Nobel Prize in Physics. He has shaped the theoretical understanding of normal and superfluid helium liquids and strongly coupled superfluids. He set directions for research in the quantum physics of macroscopic dissipative systems and use of condensed systems to test the foundations of quantum mechanics.
Wolfgang Ketterle is a German physicist and professor of physics at the Massachusetts Institute of Technology (MIT). His research has focused on experiments that trap and cool atoms to temperatures close to absolute zero, and he led one of the first groups to realize Bose–Einstein condensation in these systems in 1995. For this achievement, as well as early fundamental studies of condensates, he was awarded the Nobel Prize in Physics in 2001, together with Eric Allin Cornell and Carl Wieman.
David Morris Lee is an American physicist who shared the 1996 Nobel Prize in Physics with Robert C. Richardson and Douglas Osheroff "for their discovery of superfluidity in helium-3." Lee is professor emeritus of physics at Cornell University and distinguished professor of physics at Texas A&M University.
Robert Coleman Richardson was an American experimental physicist whose area of research included sub-millikelvin temperature studies of helium-3. Richardson, along with David Lee, as senior researchers, and then graduate student Douglas Osheroff, shared the 1996 Nobel Prize in Physics for their 1972 discovery of the property of superfluidity in helium-3 atoms in the Cornell University Laboratory of Atomic and Solid State Physics.
Victor John Emery was a British specialist on superconductors and superfluidity. His model for the electronic structure of the copper-oxide planes is the starting point for many analyses of high-temperature superconductors and is commonly known as the Emery model.
Olli Viktor Lounasmaa was a Finnish academician, experimental physicist and neuroscientist. He was known for his research in low temperature physics, especially for experimental proof of the superfluidity of helium-3 and also for his work in the field of magnetoencephalography.
Second sound is a quantum mechanical phenomenon in which heat transfer occurs by wave-like motion, rather than by the more usual mechanism of diffusion. Its presence leads to a very high thermal conductivity. It is known as "second sound" because the wave motion of entropy and temperature is similar to the propagation of pressure waves in air (sound). The phenomenon of second sound was first described by Lev Landau in 1941.
John David Reppy is a physicist and the John L. Wetherill Professor of Physics Emeritus at Cornell University. He studies the quantum properties of superfluids such as helium.
Eunseong Kim is a South Korean physicist. He is an experimental low temperature physicist. Along with his advisor Moses H. W. Chan, he saw the first phenomena which were interpreted as supersolid behavior. In 2008, Kim was awarded the Lee Osheroff Richardson North American Science Prize, from Oxford Instruments for his contributions to the understanding of solid helium.
Leon Pape was a medical physicist who received his BSc, MSc (1953) and PhD (1965) in Physics from the University of Southern California. He became certified in radiological physics by the American Board of Radiology and from 1955 to 1962 he worked as a radiological physicist at the Cedars of Lebanon Hospital in Los Angeles. He served at the California State University Los Angeles as radiation safety officer and as professor of physics until 1971, and worked on the development of studies in biophysics, radiological health physics, and electron microscopy. He was elevated to departmental head of physics at Cal State Los Angeles, and advocated with the California legislature to secure adequate funding for the 4-MeV Van de Graaf Laboratory, unique to CSU system. From 1971 until his death he worked at the August Krogh Institute at the University of Copenhagen, Denmark, in the zoophysiological laboratory. His central research area was membrane biophysics.
Horst Meyer was a Swiss scientist doing research in condensed matter physics.
William P. Halperin is a Canadian-American physicist, academic, and researcher. He is the Orrington Lunt Professor of Physics at Northwestern University.
GrigoryEfimovich Volovik is a Russian theoretical physicist, who specializes in condensed matter physics. He is known for the Volovik effect.
YuryMikhailovich Bunkov is a Russian experimental physicist, specializing in condensed matter physics. He is known as one of the co-discoverers of the quantum spin liquid state.
