Search results
Results From The WOW.Com Content Network
Chin-Sen Ting is a Chinese American physicist from Taiwan and an academic.He is a distinguished professor of physics at the University of Houston. [1]Through his research, Ting has explored condensed matter theories in semiconductors, magnetism, superconductivity, and correlated electron systems, focusing on solid state systems using methods like diagrammatic many body theory and Monte Carlo ...
For example, those used in the Gravity Probe B experiment measured changes in gyroscope spin axis orientation to better than 0.5 milliarcseconds (1.4 × 10 −7 degrees) over a one-year period. [2] This is equivalent to an angular separation the width of a human hair viewed from 32 kilometers (20 miles) away.
Podkletnov's first peer-reviewed paper on the apparent gravity-modification effect, published in 1992, attracted little notice. [3] In 1996, he submitted a longer paper, in which he claimed to have observed a larger effect (2% weight reduction as opposed to 0.3% in the 1992 paper) to the Journal of Physics D.
Based on Landau's previously established theory of second-order phase transitions, Ginzburg and Landau argued that the free energy density of a superconductor near the superconducting transition can be expressed in terms of a complex order parameter field () = | | (), where the quantity | | is a measure of the local density of superconducting electrons () analogous to a quantum mechanical wave ...
For crossed Andreev reflection to occur, electrons of opposite spin must exist at each normal electrode (so as to form the pair in the superconductor). If the normal material is a ferromagnet this may be guaranteed by creating opposite spin polarization via the application of a magnetic field to normal electrodes of differing coercivity.
Conversely, a spinning superconductor generates a magnetic field, precisely aligned with the spin axis. The effect, the London moment, was put to good use in Gravity Probe B . This experiment measured the magnetic fields of four superconducting gyroscopes to determine their spin axes.
In condensed matter physics, a quantum spin liquid is a phase of matter that can be formed by interacting quantum spins in certain magnetic materials. Quantum spin liquids (QSL) are generally characterized by their long-range quantum entanglement, fractionalized excitations, and absence of ordinary magnetic order.
Calculated magnetization curve for a superconducting slab, based on Bean's model. The superconducting slab is initially at H = 0. Increasing H to critical field H* causes the blue curve; dropping H back to 0 and reversing direction to increase it to -H* causes the green curve; dropping H back to 0 again and increase H to H* causes the orange curve.