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Aczel AA, Baker PJ, Bugaris DE, Yeon J, Zur Loye HC, Guidi T, Adroja DT. Exotic magnetism on the quasi-fcc lattices of the d3 double Perovskites La2NaB'O6 (B'=Ru, Os). PHYSICAL REVIEW LETTERS 2014; 112:117603. [PMID: 24702418 DOI: 10.1103/physrevlett.112.117603] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 06/03/2023]
Abstract
We find evidence for long-range and short-range (ζ=70 Å at 4 K) incommensurate magnetic order on the quasi-face-centered-cubic (fcc) lattices of the monoclinic double perovskites La2NaRuO6 and La2NaOsO6, respectively. Incommensurate magnetic order on the fcc lattice has not been predicted by mean field theory, but may arise via a delicate balance of inequivalent nearest neighbor and next nearest neighbor exchange interactions. In the Ru system with long-range order, inelastic neutron scattering also reveals a spin gap Δ ∼ 2.75 meV. Magnetic anisotropy is generally minimized in the more familiar octahedrally coordinated 3d3 systems, so the large gap observed for La2NaRuO6 may result from the significantly enhanced value of spin-orbit coupling in this 4d(3) material.
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Affiliation(s)
- A A Aczel
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - P J Baker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Oxfordshire OX11 0QX, United Kingdom
| | - D E Bugaris
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - J Yeon
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - H-C Zur Loye
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - T Guidi
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Oxfordshire OX11 0QX, United Kingdom
| | - D T Adroja
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Oxfordshire OX11 0QX, United Kingdom and Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
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Granado E, Lynn JW, Jardim RF, Torikachvili MS. Two-dimensional magnetic correlations and partial long-range order in geometrically frustrated Sr2YRuO6. PHYSICAL REVIEW LETTERS 2013; 110:017202. [PMID: 23383833 DOI: 10.1103/physrevlett.110.017202] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Indexed: 06/01/2023]
Abstract
Neutron diffraction on the double perovskite Sr(2)YRuO(6) with a quasi-fcc lattice of Ru moments reveals planar magnetic correlations that condense into a partial long-range ordered state with coupled alternate antiferromagnetic (AFM) YRuO(4) square layers coexisting with the short-range correlations below T(N1) = 32 K. A second transition to a fully ordered AFM state below T(N2) = 24 K is observed. The reduced dimensionality of the spin correlations is arguably due to a cancellation of the magnetic coupling between consecutive AFM square layers in fcc antiferromagnets, which is the simplest three-dimensional frustrated magnet model system.
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Affiliation(s)
- E Granado
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil.
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Onoda S, Motome Y, Nagaosa N. Two-dimensional charge order in layered 2-1-4 perovskite oxides. PHYSICAL REVIEW LETTERS 2004; 92:236403. [PMID: 15245178 DOI: 10.1103/physrevlett.92.236403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2004] [Indexed: 05/24/2023]
Abstract
Monte Carlo simulations are performed on the three-dimensional (3D) Ising model with the 2-1-4 layered perovskite structure as a minimal model for checkerboard charge ordering phenomena in layered perovskite oxides. Because of the interlayer frustration, only 2D long-range order emerges with a finite correlation length along the c axis. Critical exponents of the transition change continuously as a function of the interlayer coupling constant. The interlayer long-range Coulomb interaction decays exponentially and is negligible even between the second-neighbor layers. Instead, monoclinic distortion of a tetragonal unit cell lifts the macroscopic degeneracy to induce a 3D charge ordering. The dimensionality of the charge order in La0.5Sr1.5MnO4 is discussed from this viewpoint.
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Affiliation(s)
- Shigeki Onoda
- Tokura Spin SuperStructure Project, ERATO, Japan Science and Technology Corporation, Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Spalek J, Chao KA. Kinetic exchange interaction in a doubly degenerate narrow band and its application to Fe1-xCoxS2and Co1-xNixS2. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/13/28/011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kobe S, Klotz T. Frustration: How it can be measured. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1995; 52:5660-5663. [PMID: 9964065 DOI: 10.1103/physreve.52.5660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Wang J, Belanger DP, Gaulin BD. Specific-heat critical behavior of the Ising stacked triangular lattice antiferromagnet CsCoBr3. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:12299-12302. [PMID: 10010114 DOI: 10.1103/physrevb.49.12299] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ueno Y, Mitsubo K. Incompletely ordered phase in the three-dimensional six-state clock model: Evidence for an absence of ordered phases of XY character. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:8654-8657. [PMID: 9996509 DOI: 10.1103/physrevb.43.8654] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Plumer ML, Caillé A, Hood K. Landau theory of the magnetically ordered phases in CsCoCl3 and related compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:4958-4966. [PMID: 9992494 DOI: 10.1103/physrevb.40.4958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nagai O, Nishino K, Kim JJ, Yamada Y. Magnetic properties of a three-dimensional Ising crystal with zero-point entropy. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:5448-5451. [PMID: 9943731 DOI: 10.1103/physrevb.37.5448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lee DH, Joannopoulos JD, Negele JW, Landau DP. Symmetry analysis and Monte Carlo study of a frustrated antiferromagnetic planar (XY) model in two dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 33:450-475. [PMID: 9937930 DOI: 10.1103/physrevb.33.450] [Citation(s) in RCA: 71] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Coppersmith SN. Low-temperature phase of a stacked triangular Ising antiferromagnet. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:1584-1594. [PMID: 9937202 DOI: 10.1103/physrevb.32.1584] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Nagai O, Yamada Y, Diep HT. Linear-chain-like excitations in a three-dimensional Ising lattice with frustration: Monte Carlo simulations. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:480-483. [PMID: 9936692 DOI: 10.1103/physrevb.32.480] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Choi MY, Doniach S. Phase transitions in uniformly frustrated XY models. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 31:4516-4526. [PMID: 9936386 DOI: 10.1103/physrevb.31.4516] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Binder K, Lebowitz JL, Phani MK, Kalos MH. Monte carlo study of the phase diagrams of binary alloys with face centered cubic lattice structure. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0001-6160(81)90048-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Binder K. Monte Carlo study of entropy for face-centered cubic Ising antiferromagnets. ACTA ACUST UNITED AC 1981. [DOI: 10.1007/bf01294277] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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