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Related papers: Stabilizing the Tb-based 214 cuprate by partial Pd…

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We report the successful synthesis of single-crystalline cuprate superconductors HgBa$_{2}$CaCu$_{2}$O$_{6+\delta}$ and HgBa$_{2}$Ca$_{2}$Cu$_{3}$O$_{8+\delta}$. These compounds are well-known for their high optimal superconducting critical…

The Tb-123 phase has been synthesized in single-phase form with the composition TbSr2Cu2.7Mo0.3O7 by solid-state reaction route and its phase purity is confirmed by neutron powder diffraction experiments. As-synthesized sample does not show…

The intrinsic instability of underdoped copper oxides towards inhomogeneous states is one of the central puzzles of the physics of correlated materials. The influence of the Mott physics on the doping-temperature phase diagram of copper…

While phase-change materials (PCMs) composed of chalcogenide have different crystallization mechanisms (CM), such as nucleation-dominated Ge2Sb2Te5 (GST) and growth-dominated GeTe (GT), revealing the essential reason of CM as well as the…

The Fe-Si-O ternary system, central to modeling the interiors of terrestrial planets, remains poorly constrained at Terapascal (TPa) pressures characteristic of super-Earth mantles. Using a combination of crystal-structure prediction and ab…

Materials Science · Physics 2026-03-24 Nan Huang , Renata M. Wentzcovitch , Zepeng Wu , Feng Zheng , Bingxin Wu , Yang Sun , Shunqing Wu

The representative cuprate, La$_{2-x}$M$_x$CuO$_4$, with M = Sr and $x = 1/8$ is studied via first-principles calculations in the high-temperature tetragonal (HTT), low-temperature orthorhombic (LTO), and low-temperature less-orthorhombic…

Superconductivity · Physics 2021-09-01 Chi-Cheng Lee , Ji-Yao Chiu , Yukiko Yamada-Takamura , Taisuke Ozaki

We develop a self-consistent microscopic framework beyond mean-field theory for monolayer cuprate superconductivity. It couples fermionic quasiparticles with collective phase dynamics to treat the gap and superfluid stiffness. The phase…

Strongly Correlated Electrons · Physics 2026-03-13 F. Yang , Y. Shi , L. Q. Chen

Crystal structure searching and ab initio calculations have been used here to explore low-energy structures of boron carbides under high pressure. Under pressures of 85-110 GPa, a metastable B6C with R-3m symmetry is found to be…

Materials Science · Physics 2018-01-01 Kang Xia , Mengdong Ma , Cong Liu , Hao Gao , Qun Chen , Julong He , Jian Sun , Hui-Tian Wang , Yongjun Tian , Dingyu Xing

Structural, vibrational and dielectric properties of (Pb1-xBix)(Ti1-xMnx)O3 (PBTM) (0 x 0.50) polycrystalline ceramics have been examined as a function of temperature. Synchrotron-based powder x-ray diffraction was employed to confirm phase…

We report on the crystal structure of the quantum magnet (CuCl)LaNb2O7 that was controversially described with respect to its structural organization and magnetic behavior. Using high-resolution synchrotron powder x-ray diffraction,…

Materials Science · Physics 2015-03-17 Alexander A. Tsirlin , Artem M. Abakumov , Gustaaf Van Tendeloo , Helge Rosner

Layered perovskite iridates realize a rare class of Mott insulators that are predicted to be strongly spin-orbit coupled analogues of the parent state of cuprate high-temperature superconductors. Recent discoveries of pseudogap, magnetic…

Strongly Correlated Electrons · Physics 2017-04-25 H. Chu , L. Zhao , A. de la Torre , T. Hogan , S. D. Wilson , D. Hsieh

Tetragonal tungsten bronze (TTB) oxides are one of the most important classes of ferroelectrics. Many of these framework structures undergo ferroelastic transformations related to octahedron tilting deformations. Such tilting deformations…

Materials Science · Physics 2013-03-12 Mikhail Smirnov , Pierre Saint-Grégoire

Normal state orbital diamagnetism of charged bosons quantitatively accounts for recent high-resolution magnetometery results near and above the resistive critical temperature Tc of superconducting cuprates. Our parameter-free descriptions…

Superconductivity · Physics 2009-11-11 A. S. Alexandrov

The article addresses the possibility of alloy elements in MnBi which may modify the thermodynamic stability of the NiAs-type structure without significantly degrading the magnetic properties. The addition of small amounts of Rh and Mn…

A simple model of the commensurate charge-density wave (CCDW) portion of the underdoped pseudogap regions of monolayer Bi$_2$Sr$_{2-x}$La$_x$CuO$_{6-x}$ (Bi2201), bilayer Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ (Bi2212), and trilayer…

Superconductivity · Physics 2025-01-27 Jacob Morrissey , Timothy J. Haugan , Richard A. Klemm

A new cage-structured compound - HfMn$_{2}$Zn$_{20}$ - belonging to the AB$_{2}$C$_{20}$ (A, B = transition or rare earth metals, and C = Al, Zn, or Cd) family of structures has been synthesized via the self-flux method. The new compound…

Materials Science · Physics 2024-04-03 Nusrat Yasmin , Md Fahel Bin Noor , Tiglet Besara

The issues related to the structure refinement of Pb(ZrxTi1-x)O3 (PZT) solid solutions are discussed. Particular attention is paid on the modelling of the co-existing phases in the vicinity of the morphotropic phase boundary (MPB), where…

Materials Science · Physics 2007-05-23 Johannes Frantti

We have studied the Tb$_2$Sn$_2$O$_7$ frustrated magnet by neutron diffraction under isotropic pressure of 4.6 GPa, combined with uniaxial pressure of 0.3 GPa, in the temperature range 0.06 K$<$T$<$100 K. Magnetic order persists under…

Strongly Correlated Electrons · Physics 2015-05-13 I. Mirebeau , I. Goncharenko , H. Cao , A. Forget

The widely used crystal structures for both heptazine-based and triazine-based two-dimensional (2D) graphitic carbon nitride (g-C$_3$N$_4$) are the flat P-6m2 configurations. However, the experimentally synthesized 2D g-C$_3$N$_4$ possess…

Materials Science · Physics 2021-02-03 Luneng zhao , Xizhi Shi , Jin Li , Tao Ouyang , Chunxiao Zhang , Chao Tang , Chaoyu He , Jianxin Zhong

The layered ATMPn$_2$ (A = alkali earth or rare earth atom, TM = transition metal, Pn = Sb, Bi) compounds are widely studied for their rich magnetism and electronic structure topology. Here, we characterize the physical properties of…

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