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| 001 | 841162 | ||
| 005 | 20250129094331.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.96.214415 |2 doi |
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| 100 | 1 | _ | |a Pecanha Antonio, Viviane |0 P:(DE-Juel1)166566 |b 0 |
| 245 | _ | _ | |a Magnetic excitations in the ground state of Yb$_{2}$ Ti$_{2}$ O$_{7}$ |
| 260 | _ | _ | |a Woodbury, NY |c 2017 |b Inst. |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a We report an extensive study on the zero field ground state of a powder sample of the pyrochlore Yb$_{2}$Ti$_{2}$O$_{7}$. A sharp heat capacity anomaly that labels a low temperature phase transition in this material is observed at 280 mK. Neutron diffraction shows that a quasicollinear ferromagnetic order develops below Tc with a magnetic moment of 0.87(2)μB. High resolution inelastic neutron scattering measurements show, below the phase transition temperature, sharp gapped low-lying magnetic excitations coexisting with a remnant quasielastic contribution likely associated with persistent spin fluctuations. Moreover, a broad inelastic continuum of excitations at ∼0.6 meV is observed from the lowest measured temperature up to at least 2.5 K. At 10 K, the continuum has vanished and a broad quasielastic conventional paramagnetic scattering takes place at the observed energy range. Finally, we show that the exchange parameters obtained within the framework of linear spin-wave theory do not accurately describe the observed zero field inelastic neutron scattering data. |
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| 700 | 1 | _ | |a Feng, Erxi |0 P:(DE-Juel1)159565 |b 1 |
| 700 | 1 | _ | |a Su, Yixi |0 P:(DE-Juel1)130991 |b 2 |e Corresponding author |
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| 773 | 1 | 8 | |a 10.1103/physrevb.96.214415 |b American Physical Society (APS) |d 2017-12-11 |n 21 |p 214415 |3 journal-article |2 Crossref |t Physical Review B |v 96 |y 2017 |x 2469-9950 |
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