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Title: Giant Anisotropic Magnetoresistance due to Purely Orbital Rearrangement in the Quadrupolar Heavy Fermion Superconductor PrV 2 Al 20

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [2];  [2];  [3];  [4];  [3];  [3];  [5];  [2];  [2];  [2];  [6]
  1. Univ. of Tokyo (Japan); Hiroshima Univ. (Japan); Maglab
  2. Florida State Univ., Tallahassee, FL (United States)
  3. Univ. of Tokyo (Japan)
  4. Max Planck Inst. for Solid State Research, Stuttgart (Germany)
  5. National Defense Academy, Yokosuka (Japan)
  6. Univ. of Tokyo (Japan); Japan Science and Technology Agency (JST), Saitama (Japan)

In this report, we discuss the discovery of giant and anisotropic magnetoresistance due to the orbital rearrangement in a non magnetic correlated metal. In particular, we measured the magnetoresistance under fields up to 31.4 T in the cubic Pr-based heavy fermion superconductor PrV2Al20 with a non magnetic Γ3 doublet ground state, exhibiting antiferro quadrupole ordering below 0.7 K. For the [100] direction, we find that the high field phase appears between 12 and 25 T, accompanied by a large jump at 12 T in the magnetoresistance (ΔMR ~ 100%) and in the anisotropic magnetoresistivity ratio by ~20%. These observations suggest that the strong hybridization between the conduction electrons and anisotropic quadrupole moments leads to the Fermi surface reconstruction upon crossing the field-induced antiferroquadrupole (orbital) rearrangement.

Research Organization:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Grant/Contract Number:
SC0002613
OSTI ID:
1594434
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 122; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Unveiling hidden multipolar orders with magnetostriction journal September 2019