Hyun-Joo Koo

Works (41)

2020 journal article

Peculiarities of magnetic ordering in the S=5/2 two-dimensional square-lattice antimonate NaMnSbO4

PHYSICAL REVIEW B, 101(5).

By: T. Vasilchikova, V. Nalbandyan, I. Shukaev, H. Koo, M. Whangbo, A. Lozitskiy, A. Bogaychuk, V. Kuzmin ...

Source: Web Of Science
Added: March 23, 2020

2020 journal article

Synthesis of the Elusive S=1/2 Star Structure: A Possible Quantum Spin Liquid Candidate

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 142(11), 5013–5016.

By: M. Sorolla, X. Wang, H. Koo, M. Whangbo & A. Jacobson

Source: Web Of Science
Added: May 8, 2020

2019 journal article

Effect of Nonmagnetic Ion Deficiency on Magnetic Structure: Density Functional Study of Sr2MnO2Cu2-xTe2, Sr2MO2Cu2Te2 (M = Co, Mn), and the Oxide-Hydrides Sr2VO3H, Sr3V2O5H2, and SrVO2H

INORGANIC CHEMISTRY, 58(21), 14769–14776.

By: H. Koo & M. Whangbo

Source: Web Of Science
Added: November 25, 2019

2019 journal article

Electronic and Structural Factors Controlling the Spin Orientations of Magnetic Ions

INORGANIC CHEMISTRY, 58(18), 11854–11874.

By: M. Whangbo, H. Xiang, H. Koo, E. Gordon & J. Whitten

Source: Web Of Science
Added: October 7, 2019

2019 journal article

Synthesis and Characterization of Sodium-Iron Antimonate Na2FeSbO5: One-Dimensional Antiferromagnetic Chain Compound with a Spin-Glass Ground State

INORGANIC CHEMISTRY, 58(17), 11333–11350.

By: S. Uma, T. Vasilchikova, A. Sobolev, G. Raganyan, A. Sethi, H. Koo, M. Whangbo, I. Presniakov ...

Source: Web Of Science
Added: September 23, 2019

2019 journal article

The Conceptual Dilemma of the One-Electron Picture in Describing the Uniaxial Magnetism at Linear Coordination Sites

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, (21), 2630–2634.

By: H. Koo, E. Kasapbasi, J. Whitten & M. Whangbo

Source: Web Of Science
Added: July 1, 2019

2010 journal article

Half-metallic ferromagnetism and large negative magnetoresistance in the new lacunar spinel GaTi3VS8

Journal of the American Chemical Society, 132(16), 5704–5710.

By: E. Dorolti, L. Cario, B. Corraze, E. Janod, C. Vaju, H. Koo, E. Kan, M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2008 journal article

Analysis of the spin lattice model for the spin-gapped layered compounds Na3Cu2SbO6 and Na2Cu2TeO6 on the basis of electronic structure calculations

Inorganic Chemistry, 47(1), 128–133.

By: H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

On the relevance of an antiferromagnetic dimer model for the spin-gapped magnetic solids Cu(terpy)Mo2O7 and Cu(OH)(p-pyc)H2O

Inorganic Chemistry, 46(7), 2498–2502.

By: H. Koo, C. Lee, G. Wilson-Short, D. Dai & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Spin dimer analysis of the magnetic structures of A(2)V(3)O(9) (A = Ba, Sr) and eta-Na9V14O35: Importance of the V4+-O center dot center dot center dot O-V4+ super- superexchange interactions mediated by the O-V5+-O bridges

Solid State Sciences, 9(9), 824–832.

By: H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Spin dimer analysis of the magnetic structures of Ba3Cr2O8, Ba3Mn2O8, Na4FeO4, and Ba2CoO4 with a three-dimensional network of isolated MO4 (M = Cr, Mn, Fe, Co) tetrahedra

Inorganic Chemistry, 45(26), 10743–10749.

By: H. Koo, K. Lee & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2005 journal article

Dramatic variation of magnetic exchange through double end-on azide bridges in a series of ladder-like copper(II) coordination polymers

Inorganic Chemistry, 44(3), 638–648.

By: J. Woodward, R. Backov, K. Abboud, D. Dai, H. Koo, M. Whangbo, M. Meisel, D. Talham

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Experimental and theoretical investigation on the relative stability of the PdS2- and pyrite-type structures of PdSe2

Inorganic Chemistry, 43(6), 1943–1949.

By: C. Soulard, X. Rocquefelte, P. Petit, M. Evain, S. Jobic, J. Itie, P. Munsch, H. Koo, M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Investigation of the incommensurate and commensurate magnetic superstructures of LiCuVO4 and CuO on the basis of the isotropic spin exchange and classical spin approximations

Inorganic Chemistry, 43(13), 4026–4035.

By: D. Dai, H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Reexamination of the magnetic properties of Cu-2(dca)(4)(2,5-me(2)pyz) {dca = dicyanamide; me(2)pyz = dimethylpyrazine}: isolated spin-1/2 dimers versus long-range magnetic ordering

Inorganic Chemistry, 43(13), 4007–4011.

By: J. Manson, J. Schlueter, H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Synthesis and characterization of a magnetic semiconductor Na2RuO4 containing one-dimensional chains of RU6+

Inorganic Chemistry, 43(1), 07-.

By: M. Shikano, R. Kremer, M. Ahrens, H. Koo, M. Whangbo & J. Darriet

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Cu(HCO2)(2)L {L = pyrazine, 4,4 '-bipyridine}: employing the formate anion as a building block in three-dimensional coordination polymers

Dalton Transactions (Cambridge, England : 2003), (14), 2905–2911.

By: J. Manson, J. Lecher, J. Gu, U. Geiser, J. Schlueter, R. Henning, X. Wang, A. Schultz, H. Koo, M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Interpretation of the magnetic structures of Cu2Te2O5X2 (X = Cl, Br) and Ca3.1Cu0.9RuO6 on the basis of electronic structure considerations: Cases for strong super-superexchange interactions involving Cu2+ ions

Inorganic Chemistry, 42(12), 3898–3906.

By: M. Whangbo, H. Koo, D. Dai & D. Jung

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Investigation of the spin exchange interactions and magnetic structures of the CrVO4-type transition metal phosphates, sulfates, and vanadates by spin dimer analysis

Inorganic Chemistry, 42(19), 5932–5937.

By: H. Koo, M. Whangbo & K. Lee

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Investigations of the oxidation states and spin distributions in Ca3Co2O6 and Ca3CoRhO6 by spin-polarized electronic band structure calculations

Solid State Communications, 125(7-8), 413–417.

By: M. Whangbo, D. Dai, H. Koo & S. Jobic

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Magnetic superstructures of cupric oxide CuO as ordered arrangements of one-dimensional antiferromagnetic chains

Inorganic Chemistry, 42(4), 1187–1192.

By: H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Spin exchange interactions and magnetic structures of extended magnetic solids with localized spins: theoretical descriptions on formal, quantitative and qualitative levels

Journal of Solid State Chemistry, 176(2), 417–481.

By: M. Whangbo, H. Koo & D. Dai

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Syntheses, structures, and optical properties of yellow Ce2SiS5, Ce6Si4S17, and Ce4Si3S12 materials

Chemistry of Materials, 15(4), 828–837.

By: G. Gauthier, S. Jobic, M. Evain, H. Koo, M. Whangbo, C. Fouassier, R. Brec

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Synthesis of the highly ID conductor (THTTF)(4)I-19

Synthetic Metals, 133(2003 Mar 13), 381–383.

By: L. Montgomery, K. Starkey, D. Engel, J. Bollinger, M. Tittelbach, D. Schweitzer, I. Heinen, H. Koo, M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Trends in metal-biradical exchange interaction for first-row M- II(nitronyl nitroxide-semiquinone) complexes

Journal of the American Chemical Society, 125(6), 1607–1617.

By: D. Shultz, K. Vostrikova, S. Bodnar, H. Koo, M. Whangbo, M. Kirk, E. Depperman, J. Kampf

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Trends in the structure and bonding in the layered platinum dioxide and dichalcogenides PtQ(2) (Q = O, S, Se, Te)

Journal of Solid State Chemistry, 173(1), 114–121.

By: D. Dai, H. Koo, M. Whangbo, C. Soulard, X. Rocquefelte & S. Jobic

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

A two-dimensional radical salt based upon BEDT-TTF and the dimeric, magnetic anion [Fe(tdas)(2)](2)(2-): (BEDT- TTF)(2)[Fe(tdas)(2)] (tdas=1,2,5-thiadiazole-3,4-dithiolate)

Journal of Materials Chemistry, 12(12), 3570–3577.

By: P. Deplano, L. Leoni, M. Mercuri, J. Schlueter, U. Geiser, H. Wang, A. Kini, J. Manson ...

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Analysis of the electron localization, the anisotropy of electrical conductivity, the orbital ordering, and spin- exchange interactions in BaVS3 on the basis of first principles and semi-empirical electronic structure calculations

Journal of Solid State Chemistry, 165(2), 345–358.

By: M. Whangbo, H. Koo, D. Dai & A. Villesuzanne

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Dimensionality effects on the optical properties of (PO2)(4)(WO3)(2m) (m=2, 4, 6, 7)

Chemistry of Materials, 14(6), 2607–2615.

By: Z. Zhu, J. Musfeldt, H. Koo, M. Whangbo, Z. Teweldemedhin & M. Greenblatt

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Effect of metal-ligand bond lengths on superexchange interactions in Jahn-Teller d(4) ion systems: Spin dimer analysis of the magnetic structure of marokite CaMn2O4

Inorganic Chemistry, 41(21), 5575–5581.

By: M. Whangbo, H. Koo, D. Dai & D. Jung

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Effect of metal-oxygen covalent bonding on the competition between Jahn-Teller distortion and charge disproportionation in the perovskites of high-spin d(4) metal ions LaMnO3 and CaFeO3

Inorganic Chemistry, 41(7), 1920–1929.

By: M. Whangbo, H. Koo, A. Villesuzanne & M. Pouchard

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Electrical resistivity, magnetic susceptibility, X-ray photoelectron spectroscopy, and electronic band structure studies of Cu-2.33-xV4O11

Journal of Solid State Chemistry, 166(2), 382–388.

By: P. Rozier, J. Galy, G. Chelkowska, H. Koo & M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Flux growth of vanadyl pyrophosphate, (VO)(2)P2O7, and spin dimer analysis of the spin exchange interactions of (VO)(2)P2O7 and vanadyl hydrogen phosphate, VO(HPO4)center dot 0.5H(2)O

Inorganic Chemistry, 41(18), 4664–4672.

By: H. Koo, M. Whangbo, P. Vernooy, C. Torardi & W. Marshall

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Magnetic properties of the low-dimensional cuprate Na5RbCu4(AsO4)(4)Cl-2

Physical Review. B, Condensed Matter and Materials Physics, 66(5), 052403–052401.

By: J. Clayhold, M. Ulutagay-Kartin, S. Hwu, H. Koo, M. Whangbo, A. Voigt, K. Eaiprasertsak

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Optical investigation of Na2V3O7 nanotubes

Chemistry of Materials, 14(2), 924–930.

By: J. Choi, J. Musfeldt, Y. Wang, H. Koo, M. Whangbo, J. Galy, P. Millet

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Orbital interaction analysis of cooperative Jahn-Teller distortion, orbital ordering, spin ordering, and spin exchange interactions in magnetic solids

Solid State Sciences, 4(3), 335–346.

By: M. Whangbo & H. Koo

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Spin dimer analysis of the spin exchange interactions in paramelaconite Cu4O3 and its analogue Ag2Cu2O3 and the spin ordering of the Cu2O3 spin lattice leading to their magnetic phase transitions

Inorganic Chemistry, 41(13), 3570–3577.

By: M. Whangbo & H. Koo

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Spin dimer analysis of the three-dimensional antiferromagnetic ordering in the quaternary manganese sulfides BaLn(2)MnS(5) (Ln = La, Ce, Pr)

Journal of Solid State Chemistry, 169(2), 143–148.

By: H. Koo, M. Whangbo & K. Lee

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Theoretical investigation of the spin exchange interactions and magnetic properties of the homometallic ludwigite Fe3O2BO3

Inorganic Chemistry, 41(8), 2193–2201.

By: M. Whangbo, H. Koo, J. Dumas & M. Continentino

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Trifluoromethylsulfonyl-based salts of BEDT-TTF: Crystal and electronic structures and physical properties

Journal of Solid State Chemistry, 168(2), 524–534.

By: J. Schlueter, U. Geiser, H. Wang, A. Kini, B. Ward, J. Parakka, R. Daugherty, M. Kelly ...

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Influence of the metal-metal sigma bonding on the structures and physical properties of the hexagonal perovskite-typesulfides Sr9/8TiS3,Sr8/7TiS3, and Sr-8/7[Ti6/7Fe1/7]S-3

Journal of Solid State Chemistry, 162(1), 103–112.

By: O. Gourdon, E. Jeanneau, M. Evain, S. Jobic, R. Brec, H. Koo, M. Whangbo

Source: NC State University Libraries
Added: August 6, 2018