Evolution of the propagation vector of antiferroquadrupolar phases in Ce_3Pd_(20)Si_6 under magnetic field

Portnichenko P. Y.; Nikitin S. E.; Prokofiev A.; Paschen S.; Mignot J-M; Ollivier J.; Podlesnyak A.; Meng Siqin; Lu Zhilun; Inosov D. S.

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Evolution of the propagation vector of antiferroquadrupolar phases in Ce_3Pd_(20)Si_6 under magnetic field

机译：磁场下CE_3PD_（20）SI_6中的抗甲状腺阶段繁殖载体的演变

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Hidden-order phases that occur in a number of correlated f-electron systems are among the most elusive states of electronic matter. Their investigations are hindered by the insensitivity of standard physical probes, such as neutron diffraction, to the order parameter that is usually associated with higher-order multipoles of the f orbitals. The heavy-fermion compound Ce3Pd20Si6 exhibits magnetically hidden order at subkelvin temperatures, known as phase II. Additionally, for magnetic field applied along the [001] cubic axis, another phase II' was detected, but the nature of the transition from phase II to phase II' remained unclear. Here we use inelastic neutron scattering to argue that this transition is most likely associated with a change in the propagation vector of the antiferroquadrupolar order from (111) to (100). Despite the absence of magnetic Bragg scattering in phase II', its ordering vector is revealed by the location of an intense magnetic soft mode at the (100) wave vector, that is orthogonal to the applied field. At the II-II' transition, this mode softens and transforms into quasielastic and nearly Q-independent incoherent scattering, which is likely related to the non-Fermi-liquid behavior recently observed at this transition. Our experiment also reveals sharp collective excitations in the field-polarized paramagnetic phase, after phase II' is suppressed in fields above 4 T.

机译：在许多相关的F-Electron系统中发生的隐藏阶段是最难以捉摸的电子产品状态。它们的调查受到标准物理探针的不敏感性，例如中子衍射，与F轨道的高阶多元化有关的顺序参数。重度铁饼化合物Ce3PD20Si6在亚卡尔文温度下展示磁隐患量，称为II期。另外，对于沿[001]立方轴施加的磁场，检测另一阶段II'，但从II期至相II'的转变的性质保持不明确。在这里，我们使用无弹性的中子散射来争辩说，这种转变很可能与来自（111）到（100）的抗甲状腺序命令的传播载体的变化相关。尽管缺失阶段II'中的磁性布拉格散射，但是其排序矢量被（100）波向量处的强烈磁性软模式的位置揭示，其与所施加的领域正交。在II-II'的转型中，这种模式软化并转化成拟塑性和几乎Q独立的非连贯散射，这可能与最近在该转变时观察到的非费米液行为有关。我们的实验还揭示了现场极化的顺磁相的敏锐集体激励，之后在4℃的领域抑制了阶段。

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《Physical review》 |2019年第21期|214431.1-214431.10|共10页
作者
Portnichenko P. Y.; Nikitin S. E.; Prokofiev A.; Paschen S.; Mignot J-M; Ollivier J.; Podlesnyak A.; Meng Siqin; Lu Zhilun; Inosov D. S.;
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Tech Univ Dresden Inst Festkorper & Mat Phys D-01069 Dresden Germany;

Tech Univ Dresden Inst Festkorper & Mat Phys D-01069 Dresden Germany|Max Planck Inst Chem Phys Fester Stoffe Nothnitzer Str 40 D-01187 Dresden Germany;

Vienna Univ Technol Inst Solid State Phys Wiedner Hauptstr 8-10 A-1040 Vienna Austria;

Vienna Univ Technol Inst Solid State Phys Wiedner Hauptstr 8-10 A-1040 Vienna Austria;

CEA Saclay CEA CNRS Lab Leon Brillouin F-91191 Gif Sur Yvette France;

Inst Laue Langevin 71 Ave Martyrs CS 20156 F-38042 Grenoble 9 France;

Oak Ridge Natl Lab Neutron Scattering Div Oak Ridge TN 37831 USA;

China Inst Atom Energy Beijing 102413 Peoples R China|Helmholtz Zentrum Berlin Mat & Energie GmbH D-14109 Berlin Germany;

Helmholtz Zentrum Berlin Mat & Energie GmbH D-14109 Berlin Germany;

Tech Univ Dresden Inst Festkorper & Mat Phys D-01069 Dresden Germany;

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1. Evolution of the propagation vector of antiferroquadrupolar phases in Ce_3Pd_(20)Si_6 under magnetic field [J] . Portnichenko P. Y., Nikitin S. E., Prokofiev A., Physical review . 2019,第21期

机译：磁场下Ce_3Pd_（20）Si_6中反四方四极相的传播矢量的演化
2. Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field [J] . Portnichenko P. Y., Nikitin S. E., Prokofiev A., Physical review, B . 2019,第21期

机译：磁场下Ce3PD20Si6中抗甲状腺阶段繁殖载体的演变
3. Antiferroquadrupolar ordering and magnetic-field-induced phase transition in the cage compound PrRh_2Zn_(20) [J] . Isao Ishii, Hitoshi Muneshige, Shuhei Kamikawa, Physical review . 2013,第20期

机译：笼状化合物PrRh_2Zn_（20）中的反四极极性有序和磁场诱导的相变
4. Magnetic Neutron Scattering from the Rare-Earth Intermetallic Compound System R_3Pd_(20)Si_6 (R = Rare Earth) [C] . T. Herrmannsdoerfer, A. Doenni, P. Fischer, European Powder Diffraction Conference(EPDIC 8); 20020523-26; Uppsala(SE) . 2002

机译：稀土金属间化合物系统R_3Pd_（20）Si_6（R =稀土）的磁中子散射
5. On the use of phase reconstructed vector field electron tomography for the three-dimensional study of magnetic materials. [D] . Phatak, Charudatta. 2009

机译：关于利用相重构矢量场电子断层扫描技术对磁性材料进行三维研究。
6. Strain and vector magnetic field tuning of the anomalous phase in Sr3Ru2O7 [O] . Daniel O. Brodsky, Mark E. Barber, Jan A. N. Bruin, 2017

机译：Sr3Ru2O7异常相的应变和矢量磁场调谐
7. Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field [O] . P. Y. Portnichenko, S. E. Nikitin, A. Prokofiev, 2019

机译：磁场下Ce3PD20Si6中抗甲状腺阶段繁殖载体的演变
8. Flare Activity, Sunspot Motions, and the Evolution of Vector Magnetic Fields in Hale Region 17244 [R] . Neidig, D. F., Smith, J. B., Hagyard, M. J., 1986

机译：耀斑活动，太阳黑子运动和Hale地区17244矢量磁场的演变

Evolution of the propagation vector of antiferroquadrupolar phases in Ce_3Pd_(20)Si_6 under magnetic field

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