Induced-moment magnetic form factor of the heavy-fermion superconductors UPt3, UBe13, and CeCu2Si2
C. Stassis, J. Arthur, C. F. Majkrzak, J. D. Axe, B. Batlogg, J. Remeika, Z. Fisk, J. L. Smith, A. S. Edelstein
DOI 10.1103/PhysRevB.34.4382 · Physical Review B
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Abstract
Polarized neutron scattering techniques have been used to study the spatial distribution and temperature dependence of the magnetization induced in single crystals of UPt3, UBe13, and CeCu2Si2 by an externally applied magnetic field. We find that (a) the induced magnetization in the normal low-temperature state is predominatly of f-electronic character and that (b) the generalized electronic susceptibility χ(Q,0) where Q is a reciprocal-lattice vector), obtained by measurements with H<Hc2, is temperature independent between 4.2 K and approximately 0.1 K. This result implies either that the superconductivity in these compounds is unconventional or that there is significant spin-orbit scattering by impurities in the samples. This latter possibility notwithstanding, the experimental results impose severe restrictions on the possible superconducting states of these systems.
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. | — | Pressure not reported | unknown |
| UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| V3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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