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- W2973144712 abstract "Novel materials incorporating electronic degrees of freedom other than charge, including spin, orbital and valley textit{et al} have manifested themselves to be of the great interests and applicable potentials. Recently, the multipolar degrees of freedom have attracted extensive attention in the electronic correlated effects. In this work, we systematically studied the transport, magnetic and thermodynamic properties of the topological semimetal candidate PrBi in the framework of crystalline electric field theory. Our results demonstrate the $Gamma_3$ non-Kramers doublet as the ground state of Pr$^{3+}$ (4$f^2$) ions. This ground state is nonmagnetic but carries a non-zero quadrupolar moment $langlehat{O}_2^0rangle$, and the latter is inferred to undergo a quadrupolar phase transition below 0.08 K. No obvious quadrupolar Kondo effect can be identified. Ultrahigh-field quantum oscillation measurements confirm PrBi as a semimetal with non-trivial Berry phase and low total carrier density 0.06 /f.u. We discuss the interplay between low carrier density and $4f^2$ quadrupolar moment, and ascribe the weak quadrupolar ordering and Kondo effect as consequences of the low carrier density. PrBi, thus, opens a new window to the physics of topology and strongly correlated effect with quadrupolar degrees of freedom in the low-carrier-density limit, evoking the need for a reexamination of the Nozieres exhaustion problem in the context of multi-channel Kondo effect." @default.
- W2973144712 created "2019-09-19" @default.
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- W2973144712 date "2019-09-10" @default.
- W2973144712 modified "2023-09-27" @default.
- W2973144712 title "PrBi, a semimetal where topology meets quadrupolar degrees of freedom" @default.
- W2973144712 hasPublicationYear "2019" @default.
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