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We present an analytic approach to study concurrent influence of quenched non-magnetic site-dilution and finiteness of the lattice on the 2D XY model. Two significant deeply connected features of this spin model are: a special type of…

Statistical Mechanics · Physics 2010-07-06 Oleksandr Kapikranian , Bertrand Berche , Yurij Holovatch

The exploration of topological states is of significant fundamental and practical importance in contemporary condensed matter physics, for which the extension to two-dimensional (2D) organometallic systems is particularly attractive. Using…

Mesoscale and Nanoscale Physics · Physics 2016-01-13 Hyun-Jung Kim , Chaokai Li , Ji Feng , Jun-Hyung Cho , Zhenyu Zhang

We have studied the crystal and magnetic structures of the magnetoelectric materials RMn2O5 (R = Tb, Ho, Dy) using neutron diffraction as a function of temperature. All three materials display incommensurate antiferromagnetic ordering below…

Strongly Correlated Electrons · Physics 2009-11-11 G. R. Blake , L. C. Chapon , P. G. Radaelli , S. Park , N. Hur , S-W. Cheong , J. Rodriguez-Carvajal

Layered antiferromagnetic materials have emerged as a novel subset of the two-dimensional family providing a highly accessible regime with prospects for layer-number-dependent magnetism. Furthermore, transition metal phosphorous…

Materials Science · Physics 2024-01-09 Daniel J. Gillard , Daniel Wolverson , Oscar M. Hutchings , Alexander I. Tartakovskii

Our Introduction starts with a short general review of the magnetic and structural properties of the Heusler compounds which are under discussion in this book. Then, more specifically, we come to the discussion of our experimental results…

Other Condensed Matter · Physics 2007-05-23 K. Westerholt , A. Bergmann , J. Grabis , A. Nefedov , H. Zabel

We report a detailed examination the magnetic structure of anhydrous cupric chloride CuCl2 carried out by powder neutron diffraction, magnetic susceptibility and specific heat measurements on polycrystalline and single crystal samples as…

Strongly Correlated Electrons · Physics 2009-04-21 M. G. Banks , R. K. Kremer , C. Hoch , A. Simon , B. Ouladdiaf , J. -M. Broto , H. Rakoto , C. Lee , M. -H. Whangbo

The thermal equilibrium properties of the spin-ice material DTO, including specific heat, magnetization, and spin correlations, could be successfully reproduced by a model featuring magnetic interactions up to the third nearest neighbor and…

Strongly Correlated Electrons · Physics 2025-04-14 Mariano Marziali Bermudez , R. A. Borzi , D. A. Tennant , S. A. Grigera

The Ising triangular lattice remains the classic test-case for frustrated magnetism. Here we report neutron scattering measurements of short range magnetic order in CuMnO$_2$, which consists of a distorted lattice of Mn$^{3+}$ spins with…

Strongly Correlated Electrons · Physics 2020-08-13 Simon A. J. Kimber , Andrew Wildes , Hannu Mutka , Jan-Willem G. Bos , Dimitri N. Argyriou

The rare-earth triangular-lattice chalcogenide is a great platform for exploring both spin liquids and novel magnetic orders with anisotropic spin interactions and magnetic frustrations. Here, we report the thermodynamic and neutron…

Strongly Correlated Electrons · Physics 2023-03-30 Gaofeng Ding , Hongliang Wo , Rui Leonard Luo , Yimeng Gu , Yiqing Gu , Robert Bewley , Gang Chen , Jun Zhao

The standard approach to realize a spin liquid state is through magnetically frustrated states, relying on ingredients such as the lattice geometry, dimensionality, and magnetic interaction type of the spins. While Heisenberg spins on a…

Strongly Correlated Electrons · Physics 2025-04-10 Margarita G. Dronova , Vaclav Petricek , Zachary Morgan , Feng Ye , Daniel M. Silevitch , Yejun Feng

By using the determinant Quantum Monte Carlo method, the magnetic and pairing correlation of the Na$_{x}$CoO$_{2}\cdot$yH$_{2}$O system are studied within the Hubbard model on a bilayer triangular lattice. The temperature dependence of spin…

Strongly Correlated Electrons · Physics 2013-12-18 Shuang Wu , Jinling Li , Pan Gao , Ying Liang , Tianxing Ma

Magnetic frustration is a route that can lead to the emergence of novel ground states, including spin liquids and spin ices. Such frustration can be introduced through either the geometry of lattice structures or by incompatible exchange…

We study the magnetization process of the spin-1/2 antiferromagnetic Heisenberg model on a layered triangular lattice by means of a numerical cluster mean-field method with a scaling scheme (CMF+S). It has been known that antiferromagnetic…

Strongly Correlated Electrons · Physics 2016-06-01 Daisuke Yamamoto , Giacomo Marmorini , Ippei Danshita

We define unconventional non-collinear magnetic ground states on the maple leaf lattice (MLL) distinguished by the selective breaking or preservation of time reversal ($\mathcal{T}$) and parity ($\mathcal{P}$). Depending on the nature of…

Strongly Correlated Electrons · Physics 2026-01-26 Pratyay Ghosh , Ronny Thomale

Disorder in magnetic systems typically suppresses long-range order, promoting short-range states such as spin glasses and magnetic clusters. This is particularly prominent in high-entropy materials, characterized by the random distributions…

High-resolution synchrotron x-ray diffraction measurements were performed on single crystalline and powder samples of BiMn2O5. A linear temperature dependence of the unit cell volume was found between T_{N}=38$ K and 100 K, suggesting that…

Materials Science · Physics 2009-11-13 E. Granado , M. S. Eleoterio , A. F. Garcia-Flores , J. A. Souza , E. I. Golovenchits , V. A. Sanina

Quantum antiferromagnets on geometrically frustrated lattices have long attracted interest for the formation of quantum disordered states and the possible emergence of quantum spin liquid (QSL) ground states. Here we turn to the…

Strongly Correlated Electrons · Physics 2023-12-21 Lasse Gresista , Ciarán Hickey , Simon Trebst , Yasir Iqbal

We report the magnetic properties of $A$-site spinel compound MnSc$_2$Se$_4$. The macroscopic magnetic measurements uncovers successive magnetic transitions at $T_{\rm{N1}}$= 2.04 K, followed by two further transitions at $T_{\rm{N2}}$=1.8…

Strongly Correlated Electrons · Physics 2022-06-01 K. Guratinder , V. Tsurkan , L. Prodan , L. Keller , J. P. Embs , F. Juranyi , M. Medarde , Ch. Rüegg , O. Zaharko

The ability to tune magnetic orders, such as magnetic anisotropy and topological spin texture, is desired in order to achieve high-performance spintronic devices. A recent strategy has been to employ interfacial engineering techniques, such…

We investigate magnetic properties of a frustrated Heisenberg antiferromagnet with a face-centered cubic (FCC) lattice and exchange interactions between the nearest- and next-nearest neighbours, J1 and J2. In a collinear phase with the wave…

Strongly Correlated Electrons · Physics 2013-04-15 A. N. Ignatenko , A. A. Katanin , V. Yu. Irkhin