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相关论文: Structural investigation of the bilayer iridate Sr…

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We present measurements of weak localization on hexagonal boron nitride encapsulated bilayer MoS$_2$. From the analysis we obtain information regarding the phase-coherence and the spin diffusion of the electrons. We find that the…

介观与纳米尺度物理 · 物理学 2019-03-27 Nikos Papadopoulos , Kenji Watanabe , Takashi Taniguchi , Herre S. J. van der Zant , Gary A. Steele

We investigated the crystal and magnetic structures of the spin-1/2 frustrated antiferromagnet Cu3Mo2O9 in which the spin system consists of antiferromagnetic chains and dimers. The space group at room temperature has been reported to be…

We investigate the electronic structure of two Ir$^{5+}$ honeycomb iridates, Sr$_3$CaIr$_2$O$_9$ and NaIrO$_3$, by means of resonant x-ray techniques. We confirm that Sr$_3$CaIr$_2$O$_9$ realizes a large spin-orbit driven non-magnetic $J =…

强关联电子 · 物理学 2025-12-08 A. de la Torre , B. Zager , J. R. Chamorro , M. H. Upton , G. Fabbris , D. Haskel , D. Casa , T. M. McQueen , K. W. Plumb

The electronic and magnetic properties of monoclinic double perovskite Sr$_2$CeIrO$_6$ were examined based on both experiments and first-principles density functional theory calculations. From the calculations we conclude that…

材料科学 · 物理学 2016-07-13 Sudipta Kanungo , Kailash Mogare , Binghai Yan , Claudia Felser , Martin Jansen

Nd2Hf2O7, belonging to the family of geometrically frustrated cubic rare earth pyrochlore oxides, was recently identified to order antiferromagnetically below T_N = 0.55 K with an all-in/all-out arrangement of Nd3+ moments, however with a…

强关联电子 · 物理学 2017-12-15 V. K. Anand , D. L. Abernathy , D. T. Adroja , A. D. Hillier , P. K. Biswas , B. Lake

Since the discovery of superconductive twisted bilayer graphene which initiated the field of twistronics, moir\'e systems have not ceased to exhibit fascinating properties. We demonstrate that in boron nitride twisted bilayers, for a given…

材料科学 · 物理学 2023-03-29 Sylvain Latil , Hakim Amara , Lorenzo Sponza

We report on the crystallographic information such as lattice parameters, atomic positions, bond lengths and angles, and local crystalline distortion size and mode of single-crystal YCrO$_3$ compound by a high-resolution synchrotron X-ray…

材料科学 · 物理学 2024-03-08 Qian Zhao , Si Wu , Yinghao Zhu , Junchao Xia , Hai-Feng Li

The layered honeycomb lattice iridate Cu$_2$IrO$_3$ is the closest realization of the Kitaev quantum spin liquid, primarily due to the enhanced interlayer separation and nearly ideal honeycomb lattice. We report pressure-induced structural…

Hyperhoneycomb iridate $\beta$-Li$_2$IrO$_3$ is a three-dimensional analogue of two-dimensional honeycomb iridates, such as $\alpha$-Li$_2$IrO$_3$, which recently appeared as another playground for the physics of Kitaev-type spin liquid.…

We employ the previously published neutron scattering experiments\cite{1,2,3} to suggest that Er$_2$Ti$_2$O$_7$ has a broken-symmetry multiple-{\bf q} state with tetragonal magnetic symmetry\cite{4}. The ordered moments do not appear to lie…

强关联电子 · 物理学 2015-05-27 A. K. R. Briffa , R. J. Mason , M. W. Long

Iridates abound with interesting magnetic behaviours because of their strong spin-orbit coupling. Sr$_3$NiIrO$_6$ brings together the spin-orbital entanglement of the Ir$^{4+}$ ion with a 3$d$ Ni cation and a one-dimensional crystal…

材料科学 · 物理学 2018-10-19 Turan Birol , Kristjan Haule , David Vanderbilt

Magnetization measurements on single-crystal cubic SrCuTe$_2$O$_6$ with an applied magnetic field of along three inequivalent high symmetry directions $[100]$, $[110]$, and $[111]$ reveal weak magnetic anisotropy. The fits of the magnetic…

强关联电子 · 物理学 2020-10-14 P. Saeaun , Y. Zhao , P. Piyawongwatthana , T. J. Sato , F. C. Chou , M. Avdeev , G. Gitgeatpong , K. Matan

Neutron scattering measurements on the pyrochlore magnet Ce$_2$Zr$_2$O$_7$ reveal an unusual crystal field splitting of its lowest $J$=5/2 multiplet, such that its ground state doublet is composed of m$_J$=$\pm$3/2, giving these doublets a…

Using DFT+DMFT we study the normal-state electronic structure and magnetic correlations of the recently discovered alternating single-layer bilayer Raddlesden-Popper nickelate La$_5$Ni$_3$O$_{11}$ (1212-LNO). Our results exhibit qualitative…

强关联电子 · 物理学 2026-04-30 I. V. Leonov

A hypothesis that the local rotations of ReO$_6$ octahedra persist in the crystallographically untilted ambient phase of ReO$_3$ is examined by the high-resolution neutron time-of-flight total scattering based atomic pair distribution…

材料科学 · 物理学 2012-11-20 Emil S. Bozin , T. Chatterji , Simon J. L. Billinge

We have investigated the crystal and magnetic structures of the trigonal iron-boracite Fe3B7O13X with X = OH by neutron diffraction. Neutron diffraction enables us to locate the hydrogen atom of the hydroxyl group and determine the magnetic…

材料科学 · 物理学 2016-11-25 Gwilherm Nénert , Ippei Nomoto , Hirohiko Sato

Neutron diffraction, polarized neutron transmission, and small angle neutron scattering have been used to investigate the crystal structure and nature of the magnetic order in a polycrystalline sample of RuSr2Eu1.2Ce0.8Cu2O10. The sample…

超导电性 · 物理学 2009-11-11 J. W. Lynn , Y. Chen , Q. Huang , S. K. Goh , G. V. M. Williams , J. L. Tallon

The crystal structure of a disordered form of Cr$_{1/3}$NbS$_2$ has been characterized using diffraction and inelastic scattering of synchrotron radiation. In contrast to the previously reported symmetry (P6$_3$22), the crystal can be…

材料科学 · 物理学 2015-05-27 V. Dyadkin , F. Mushenok , A. Bosak , D. Menzel , S. Grigoriev , P. Pattison , D. Chernyshov

CoO has an odd number of electrons in its unit cell, and therefore is expected to be metallic. Yet, CoO is strongly insulating owing to significant electronic correlations, thus classifying it as a Mott insulator. We investigate the…

The Ho2Ti2O7, Er2Ti2O7 and Yb2Ti2O7 pyrochlores were studied by synchrotron X-ray diffraction to determine whether the (002) peak, forbidden in the pyrochlore space group Fd-3m but observed in single crystal neutron scattering measurements,…

材料科学 · 物理学 2015-04-24 Kristen Baroudi , Bruce D. Gaulin , Saul H. Lapidus , R. J. Cava