Neutron diffraction from the vortex lattice in the heavy-fermion superconductor UPt3

R. N. Kleiman; C. Broholm; G. Aeppli; E. Bucher; N. Stücheli; D. J. Bishop; K. N. Clausen; K. Mortensen; J. S. Pedersen; B. Howard

doi:10.1103/PhysRevLett.69.3120

Neutron diffraction from the vortex lattice in the heavy-fermion superconductor UPt3

R. N. Kleiman, C. Broholm, G. Aeppli, E. Bucher, N. Stücheli, D. J. Bishop, K. N. Clausen, K. Mortensen, J. S. Pedersen, B. Howard

DOI 10.1103/PhysRevLett.69.3120 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We have used neutron diffraction to observe the vortex lattice of UPt3. This is the first such measurement in a heavy-fermion system, a superconductor below 1 K, or in a system with such a long magnetic penetration depth (6000±75 Å). It also provides the first value for the pair coherence length, 111±2Å, to be obtained directly within the pairing state of UPt3. The lattice is oblique hexagonal with conventional quantization. Its anisotropy can be explained by considering a combination of gap and Fermi-surface anisotropies. The lattice does not appear to change near the transitions between the superconducting phases identified by other techniques.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.507	Pressure not reported	onset
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.451	Pressure not reported	midpoint
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown