Structural Stability of the Square Flux Line Lattice in YNI2B2C and LuNi2B2C Studied with Small Angle Neutron Scattering
نویسندگان
چکیده
M. R. Eskildsen,1 P. L. Gammel,2 B. P. Barber,2 A. P. Ramirez,2 D. J. Bishop,2 N. H. Andersen,1 K. Mortensen,1 C. A. Bolle,3 C. M. Lieber,3 and P. C. Canfield4 1Risø National Laboratory, DK-4000 Roskilde, Denmark 2Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 3Harvard University, Cambridge, Massachusetts 02138 4Iowa State University, Ames, Iowa 50011 (Received 24 February 1997)
منابع مشابه
First Principles Study on Structure Stability and Mechanical Properties of YNi2B2C and LuNi2B2C under Pressure
The pressure effects on the lattice parameters and elastic constants of the tetragonal RNi2B2C (R=Y, Lu) are investigated by means of the first principles. The predicted lattice constants and elastic constants of YNi2B2C and LuNi2B2C at 0 GPa agree well with the available data. By the elastic stability criteria under isotropic pressure, it is predicted that YNi2B2C and LuNi2B2C with tetragonal ...
متن کاملTemperature dependence of the flux line lattice transition into square symmetry in superconducting LuNi2B2C.
We have investigated the temperature dependence of the H parallel to c flux line lattice structural phase transition from square to hexagonal symmetry, in the tetragonal superconductor LuNi2B2C ( T(c) = 16.6 K). At temperatures below 10 K the transition onset field, H2(T), is only weakly temperature dependent. Above 10 K, H2(T) rises sharply, bending away from the upper critical field. This con...
متن کاملHexagonal and square flux line lattices in CeCoIn5.
Using small-angle neutron scattering, we have imaged the magnetic flux line lattice (FLL) in the d-wave heavy-fermion superconductor CeCoIn5. At low fields we find a hexagonal FLL. Around 0.6 T this undergoes what is most likely a first-order transition to square symmetry, with the nearest neighbors oriented along the gap node directions. This orientation of the square FLL is consistent with th...
متن کاملInvestigation of symmetry-breaking flux-line lattice phases in superconductors by small-angle neutron scattering
In single-crystal superconductors in the mixed state, flux-line structures may have a lower symmetry than the host crystal. In this case, multiple degenerate flux lattice domains may be present simultaneously and give rise to complicated small-angle diffraction patterns. The interpretation of these patterns in terms of the flux lattice structure in a single domain is discussed, with particular ...
متن کاملThe Vortex Lattice of a Type II Superconductors Studied by Small Angle Neutron Scattering
In this laboratory work we will study the vortex lattice VL of a type II superconductor using Small Angle Neutron Scattering SANS. The sample is a single crystal of Nb, a superconductor with a Tc = 9.3 K and lower and upper critical fields of μ0Hc1 = 0.18T and μ0Hc2 = 0.4T, respectively. For external magnetic fields between Hc1 and Hc2 the superconductor is in the so-called intermediate state. ...
متن کامل