The role of hyperfine coupling in magnetic and quadrupolar ordering of Pr3Pd20Si6

Abstract

We study the ternary clathrate Pr3Pd20Si6 in specific heat and AC-susceptibility measurements on a high-quality single crystal, distinguishing antiferromagnetic (AFM) and antiferroquadrupolar (AFQ) ordering on two sublattices of inequivalent Pr sites. The specific heat shows the direct involvement of nuclear spin degrees of freedom in the AFM ordering, which is well supported by our calculation of the hyperfine level scheme without adjustable parameters. Pr3Pd20Si6 is therefore one of the rare materials where the nuclear moments are involved in the formation of the magnetic ground state.

5 pages, 5 figures

References in corpus (3)

• Destruction of Kondo effect in cubic heavy fermion compound Ce3Pd20Si6
• Theory of induced quadrupolar order in tetragonal YbRu_{2}Ge_{2}
• f-Electron-Nuclear Hyperfine-Coupled Multiplets in the Unconventional Charge Order Phase of Filled Skutterudite PrRu4P12

Cited by in corpus (5)

• Emergence of superconductivity in the canonical heavy-electron metal YbRh2Si2
• First-principles theory of magnetic multipoles in condensed matter systems
• Large positive correlation between the effective electron mass and the multipolar fluctuation in the heavy-fermion metal Ce${}_{1-x}$La${}_x$B${}_6$
• Induced quantum magnetism in CEF singlet ground state models: Thermodynamics and excitations
• Hyperfine coupling in singlet ground state magnets