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Disorder and Quantum Spin Ice
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DOI：10.1103/PhysRevX.7.041028.png)
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We report on diffuse neutron scattering experiments providing evidence for the presence of random strains in the quantum spin-ice candidate Pr2Zr2O7. Since Pr3+ is a non-Kramers ion, the strain deeply modifies the picture of Ising magnetic moments governing the low-temperature properties of this material. It is shown that the derived strain distribution accounts for the temperature dependence of the specific heat and of the spin-excitation spectra. Taking advantage of mean-field and spin-dynamics simulations, we argue that the randomness in Pr2Zr2O7 promotes a new state of matter, which is disordered yet characterized by short-range antiferroquadrupolar correlations, and from which emerge spin-ice-like excitations. Thus, this study gives an original research route in the field of quantum spin ice.
Keyword:
Condensed Matter Physics
Magnetism
期刊
IF:
15.7
论文数:
2.7K
被引数:
3.4W
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Quantum fluctuations in the effective pseudospin-1/2 model for magnetic pyrochlore oxides.png)
PHYSICAL REVIEW B
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PHYSICAL REVIEW BIF3.7
OAAI分享收藏Antiferroquadrupolar correlations in the quantum spin ice candidate Pr2Zr2O7PHYSICAL REVIEW BOAAI
PHYSICAL REVIEW BIF3.7
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