The role of band filling in tuning the high field phases of URu2Si2

Abstract

We present a detailed study of the low temperature and high magnetic field phases in the chemical substitution series URu${}_2$Si${}_{2-x}$P${}_x$ using electrical transport and magnetization in pulsed magnetic fields up to 65T. Within the hidden order region (0 $x$  0.035) the high field ordering is robust even as the hidden order temperature is suppressed. Earlier work shows that for 0.035 $x$   0.26 there is a Kondo lattice with a no-ordered state that is replaced by antiferromagnetism for 0.26 $x$ 0.5. We observe a simplified continuation of the high field ordering in the no-order $x$-region and an enhancement of the high field state upon the destruction of the antiferromagnetism with magnetic field. These results closely resemble what is seen for URu${}_{2-x}$Rh${}_x$Si${}_2$\footnote{The concentration in this paper is defined as URu${}_{2-x}$Rh${}_x$Si${}_2$ while the chemical formula in the literature is given as U(Ru${}_{1-x}$Rh${}_x$)${}_2$Si${}_2$ [24-26]}, from which we infer that charge tuning uniformly controls the ground state of URu${}_2$Si${}_2$, regardless of whether s/p or d-electrons are replaced. This provides guidance for determining the specific factors that lead to hidden order versus magnetism in this family of materials.

5 pages, 5 figures and a supplementary

References in corpus (8)

• Nature of the 5f states in actinide metals
• Hidden Order Behaviour in URu2Si2 (A Critical Review of the Status of Hidden Order in 2014)
• Field-induced spin-density wave beyond hidden order in URu2Si2
• Chemical pressure tuning of URu${}_2$Si${}_2$ via isoelectronic substitution of Ru with Fe
• Unfolding the physics of URu2Si2 through Si -> P substitution
• Phase diagram and thermal expansion measurements on the system of URu_{2-x}Fe_xSi_2
• The suppression of hidden order and onset of ferromagnetism in URu2Si2 via Re substitution
• NMR Investigation of antiferromagnetism and coherence in URu${}_2$Si${}_{2-x}$P${}_x$

Cited by in corpus (2)

• Hidden order and beyond: an experimental-theoretical overview of the multifaceted behavior of URu${}_2$Si${}_2$
• Collinear antiferromagnetic order in URu${}_2$Si${}_{2-x}$P${}_x$ revealed by neutron diffraction