Structural Stability of the Square Flux Line Lattice in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>YNI</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi>C</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml

Eskildsen, M. R.; Gammel, P. L.; Barber, Bradley P.; Ramirez, A. P.; Bishop, David J.; Andersen, N.H.; Mortensen, K.; Bolle, C. A.; Lieber, Charles M.; Canfield, Paul C.

doi:10.1103/physrevlett.79.487

Cited by 92 publications

(47 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(5), compared to theoretical models for the field distribution in the mixed state. By far the simplest model is based on the London model, extended by a Gaussian cut-off to take into account the finite extent of the vortex cores [53,54]:…”

Section: Vortex Lattice Form Factormentioning

confidence: 99%

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Eskildsen

2011

Front. Phys.

View full text Add to dashboard Cite

Here we review recent small-angle scattering studies of the vortex lattice in a range of type-II superconductors carried out by our group. Emphasis is placed on providing examples of the kind of information which can be obtained by such measurements, focusing in particular on studies of the vortex lattice structure and form factor in LuNi 2 B 2 C, TmNi 2 B 2 C, CeCoIn 5 and Ba(Fe 0.93 Co 0.07 ) 2 As 2 .

show abstract

Section: Vortex Lattice Form Factormentioning

confidence: 99%

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Eskildsen

2011

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…10. One of the interesting features of some borocarbides (R=Er, Lu, Y) is the vortex lattice (VL) with unusual square symmetry [11][12][13][14] observed in the mixed state for magnetic fields H directed along tetragonal c-axis at H > ∼ 1 kOe. Square symmetry of VL can be connected 11,8 with the anisotropy of the upper critical magnetic field H c2 (T ) observed in the ab-plane for LuNi 2 B 2 C. 8,9 Practically no anisotropy of H c2 (T ) was found for YNi 2 B 2 C, 6,9 although this compound is very similar to LuNi 2 B 2 C. The reason for the difference in the behavior of these two borocarbides is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Hall effect inLuNi2B2Cand<

et al. 1999

View full text Add to dashboard Cite

The Hall effect in LuNi2B2C and YNi2B2C borocarbides has been investigated in normal and superconducting mixed states. The Hall resistivity ρxy for both compounds is negative in the normal as well as in the mixed state and has no sign reversal below Tc typical for high-Tc superconductors. In the mixed state the behavior of both systems is quite similar. The scaling relation ρxy ∼ ρ β xx (ρxx is the longitudinal resistivity) was found with β = 2.0 and 2.1 for annealed Luand Y-based compounds, respectively. The scaling exponent β decreases with increasing degree of disorder and can be varied by annealing. This is attributed to a variation of the strength of flux pinning. In the normal state weakly temperature dependent Hall coefficients were observed for both compounds. A distinct nonlinearity in the ρxy dependence on field H was found for LuNi2B2C in the normal state below 40 K, accompanied by a large magnetoresistance (MR) reaching +90% for H = 160 kOe at T = 20 K. At the same time for YNi2B2C only linear ρxy(H) dependences were observed in the normal state with an approximately three times lower MR value. This difference in the normal state behavior of the very similar Lu-and Y-based borocarbides seems to be connected with the difference in the topology of the Fermi surface of these compounds.

show abstract

“…Subsequent work has addressed, among other, the two band nature of superconductivity in this system [10], the local observation of Josephson current with STM [11,12], local magnetic field measurements using a superconducting tip [13], atomic size gap structure studies [14], and even local vortex dynamics [15]. Obviously, high T c superconductors and intermediate T c two-band superconductors, such as MgB 2 [1,16,17], or LuNi 2 B 2 C and YNi 2 B 2 C have also received great attention [18][19][20][21][22][23][24][25][26]. Recently, vortex lattice melting has been observed in W based thin films fabricated with focused-ion-beam [27,28], opening the route towards vortex lattice observation with STM in nanostructured superconductors.…”

Section: Introductionmentioning

confidence: 98%