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相关论文: Defect-induced spin-glass magnetism in incommensur…

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Electronic charges introduced in copper-oxide planes generate high-transition temperature superconductivity but, under special circumstances, they can also order into filaments called stripes. Whether an underlying tendency of charges to…

超导电性 · 物理学 2011-09-12 T. Wu , H. Mayaffre , S. Kramer , M. Horvatic , C. Berthier , W. N. Hardy , R. Liang , D. A. Bonn , M. -H. Julien

In this supplementary material, we investigate further the impurity-induced freezing mechanism in a doped system of 3D weakly coupled ladders resembling Bi(Cu$_{1-x}$Zn$_x$)$_2$ZnPO$_6$ using large scale Quantum Monte Carlo simulations.

强关联电子 · 物理学 2009-11-15 J. Bobroff , N. Laflorencie , L. K. Alexander , A. V. Mahajan , B. Koteswararao , P. Mendels

In strongly correlated metals, long-range magnetic order is sometimes found only upon introduction of a minute amount of $disordered$ non-magnetic impurities to the unordered clean samples. To explain such anti-intuitive behavior, we…

强关联电子 · 物理学 2023-03-03 Jinning Hou , Yuting Tan , Wei Ku

We present elastic neutron scattering results at high magnetic fields for Mg-doped CuGeO$_{3}$. For low magnesium concentrations, where a spin-Peierls phase is present, we find an enhancement of the long range antiferromagnetic order in the…

强关联电子 · 物理学 2009-11-10 C. Stock , S. Wakimoto , R. J. Birgeneau , S. Danilkin , J. Klenke , P. Smeibidl , P. Vorderwisch

We analyze the competition of magnetism and superconductivity in the two-dimensional Hubbard model with a moderate interaction strength, including the possibility of incommensurate spiral magnetic order. Using an unbiased renormalization…

强关联电子 · 物理学 2016-03-15 Hiroyuki Yamase , Andreas Eberlein , Walter Metzner

Substitutional impurities in the CuO2 planes of the cuprates allow us to probe the electronic properties of the host material. The pseudo-gap in the underdoped regime is unmodified far from the impurities even though Tc is greatly reduced.…

超导电性 · 物理学 2009-10-31 H. Alloul , J. Bobroff , A. Mahajan , P. Mendels , Y. Yoshinari

We study the spin-glass transition in a disordered quantum model. There is a region in the phase diagram where quantum effects are small and the phase transition is second order, as in the classical case. In another region, quantum…

We have studied incommensurate spin ordering in single crystal underdoped La_{2-x}Ba_{x}CuO_{4} with x~0.08, 0.05 and 0.025 using neutron scattering techniques. Static incommensurate magnetic order is observed in the La_{2-x}Ba_{x}CuO_{4}…

The magnetization measurements have been performed on the doped spin gap system TlCu_{1-x}Mg_xCl_3 with x <= 0.025. The parent compound TlCuCl_3 is a three-dimensional coupled spin dimer system with the excitation gap Delta/k_B = 7.7 K. The…

强关联电子 · 物理学 2009-11-07 A. Oosawa , T. Ono , H. Tanaka

Motivated by the recent experiments on the new spin half Kagome compound ZnCu3(OH)6Cl2, we study a phenomenological model of a frustrated quantum magnet. The model has a spin liquid groundstate and is constructed so as to mimic the…

强关联电子 · 物理学 2009-11-13 R. Chitra , M. J. Rozenberg

We study the spin-1 honeycomb lattice magnets with frustrated exchange interactions. The proposed microscopic spin model contains first and second neighbor Heisenberg interactions as well as the single-ion anisotropy. We establish a rich…

强关联电子 · 物理学 2020-08-26 Jian Qiao Liu , Fei Ye Li , Gang Chen , Ziqiang Wang

We consider an alternative to the usual spin glass paradigm for disordered magnetism, consisting of the previously unstudied combination of frustrated magnetic interactions and pseudo-dipolar disorder in spin positions. We argue that this…

其他凝聚态物理 · 物理学 2011-11-02 S. T. Banks , S. T. Bramwell

We report the magnetic properties of Mg$_{0.2}$Co$_{0.2}$Ni$_{0.2}$Cu$_{0.2}$Zn$_{0.2}$O, a high-entropy oxide with rocksalt structure, and the influence of substitutions on these properties. From the magnetic susceptibility and neutron…

The effects of the application of a magnetic field on the diagonal stripe spin-glass phase is studied in lightly doped La_{2-x}Sr_xCuO_4 (x=0.014 and 0.024). With increasing magnetic field, the magnetic elastic intensity at the diagonal…

强关联电子 · 物理学 2009-11-07 M. Matsuda , M. Fujita , K. Yamada , R. J. Birgeneau , Y. Endoh , G. Shirane

We investigate phase transitions of the quasi-one-dimensional XXZ model in a magnetic field, using the bosonization combined with the mean field treatment of the inter-chain interaction. We then find that the field induced incommensurate…

强关联电子 · 物理学 2007-12-15 Kouichi Okunishi , Takahumi Suzuki

We study the interplay between superconductivity and altermagnetism in disordered systems using recently derived quantum kinetic transport equations. Starting from this framework, we derive the Ginzburg-Landau free energy and identify, in…

Detailed account is given of the chirality scenario of experimental spin-glass transitions. In this scenario, the spin glass order of weakly anisotropic Heisenberg-like spin-glass magnets including canonical spin glasses are essentially…

无序系统与神经网络 · 物理学 2015-05-13 Hikaru Kawamura

A new route to $d^0$ magnetism is established with help of the first principles methods. Non-magnetic interstitial impurities from group 14 in the periodic table are found to induce $p$-orbital magnetism in polycrystalline PbO-type…

材料科学 · 物理学 2015-06-15 J. Berashevich , A. Reznik

The pseudogap regime of high-temperature cuprates harbours diverse manifestations of electronic ordering whose exact nature and universality remain debated. Here, we show that the short-ranged charge order recently reported in the normal…

超导电性 · 物理学 2015-03-10 T. Wu , H. Mayaffre , S. Krämer , M. Horvatić , C. Berthier , W. N. Hardy , R. Liang , D. A. Bonn , M. -H. Julien

Long range magnetic ordering in the quasi-one-dimensional random-bond antiferromagnet BaCu$_2$(Si$_{1-x}$Ge$_{x}$)$_2$O$_7$ is studied in $\mu$SR experiments as a function of disorder strength. Compared to the disorder-free parent…

强关联电子 · 物理学 2014-12-04 M. Thede , T. Haku , T. Masuda , C. Baines , E. Pomjakushina , G. Dhalenne , A. Revcolevschi , E. Morenzoni , A. Zheludev