Analysis of long range dispersion and exchange interactions between one Na atom and one K atom

1999 ◽  
Vol 111 (11) ◽  
pp. 4956-4961 ◽  
Author(s):  
Warren T. Zemke ◽  
William C. Stwalley
Keyword(s):  
Long Range ◽  
Exchange Interactions

scholarly journals Quasi-1D XY antiferromagnet Sr2Ni(SeO3)2Cl2 at Sakai-Takahashi phase diagram

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. S. Kozlyakova ◽  
A. V. Moskin ◽  
P. S. Berdonosov ◽  
V. V. Gapontsev ◽  
S. V. Streltsov ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Long Range ◽  
Density Functional ◽  
Uniaxial Anisotropy ◽  
Exchange Interactions ◽  
Spin Liquid ◽  
Functional Theory ◽  
One Dimensional ◽  
Ordered Phases ◽  
Experimental Findings

AbstractUniform quasi-one-dimensional integer spin compounds are of interest as a potential realization of the Haldane conjecture of a gapped spin liquid. This phase, however, has to compete with magnetic anisotropy and long-range ordered phases, the implementation of which depends on the ratio of interchain J′ and intrachain J exchange interactions and both uniaxial D and rhombic E single-ion anisotropies. Strontium nickel selenite chloride, Sr2Ni(SeO3)2Cl2, is a spin-1 chain system which passes through a correlations regime at Tmax ~ 12 K to long-range order at TN = 6 K. Under external magnetic field it experiences the sequence of spin-flop at Bc1 = 9.0 T and spin-flip transitions Bc2 = 23.7 T prior to full saturation at Bsat = 31.0 T. Density functional theory provides values of the main exchange interactions and uniaxial anisotropy which corroborate the experimental findings. The values of J′/J = 0.083 and D/J = 0.357 place this compound into a hitherto unoccupied sector of the Sakai-Takahashi phase diagram.

Analysis of long-range dispersion and exchange interactions of two lithium atoms

1993 ◽  
Vol 97 (10) ◽  
pp. 2053-2058 ◽  
Author(s):  
Warren T. Zemke ◽  
William C. Stwalley
Keyword(s):  
Long Range ◽  
Exchange Interactions

Long-range exchange interactions in epitaxial layered magnetic structures

1996 ◽  
Vol 221 (1-4) ◽  
pp. 357-365 ◽  
Author(s):  
P. Grünberg ◽  
J.A. Wolf ◽  
R. Schäfer
Keyword(s):  
Long Range ◽  
Exchange Interactions ◽  
Magnetic Structures

Weak long-range spin–spin exchange interactions in a copper(II) complex

1999 ◽  
Vol 9 (4) ◽  
pp. 129-130 ◽  
Author(s):  
Gennadii M. Larin ◽  
Viktor F. Shul’gin ◽  
Elena A. Sarnit
Keyword(s):  
Long Range ◽  
Spin Exchange ◽  
Exchange Interactions

A novel o-vanillin Fe(iii) complex catalytically active in C–H oxidation: exploring the magnetic exchange interactions and spectroscopic properties with different DFT functionals

2021 ◽  
Author(s):  
Oksana V. Nesterova ◽  
Olga Yu. Vassilyeva ◽  
Brian W. Skelton ◽  
Alina Bieńko ◽  
Armando J. L. Pombeiro ◽  
...  
Keyword(s):  
Long Range ◽  
Coordination Compound ◽  
Exchange Coupling ◽  
Exchange Interactions ◽  
Spectroscopic Properties ◽  
Alkane Oxidation ◽  
Magnetic Exchange ◽  
Efficient Catalyst ◽  
Catalytically Active

A new Fe(iii) coordination compound of o-vanillin acts as an efficient catalyst for alkane oxidation and features long-range exchange coupling between metal centres.

scholarly journals The First Two Decades of Neutron Scattering at the Chalk River Laboratories

2021 ◽  
Vol 5 (1) ◽  
pp. 3
Author(s):  
Thomas M. Holden
Keyword(s):  
Neutron Scattering ◽  
Long Range ◽  
Nuclear Physics ◽  
Normal Modes ◽  
Exchange Interactions ◽  
Alkali Halides ◽  
Major Step ◽  
Superfluid Fraction ◽  
Spin Wave Excitations ◽  
Direct Measurements

The early advances in neutron scattering at the Chalk River Laboratories of Atomic Energy of Canada are recorded. From initial nuclear physics measurements at the National Research Experimental (NRX) reactor came the realization that, with the flux available and improvements in monochromator technology, direct measurements of the normal modes of vibrations of solids and the structure and dynamics of liquids would be feasible. With further flux increases at the National Research Universal (NRU) reactor, the development of the triple-axis crystal spectrometer, and the invention of the constant-Q technique, the fields of lattice dynamics and magnetism and their interpretation in terms of the long-range forces between atoms and exchange interactions between spins took a major step forward. Experiments were performed over a seven-year period on simple metals such as potassium, complex metals such as lead, transition metals, semiconductors, and alkali halides. These were analyzed in terms of the atomic forces and demonstrated the long-range nature of the forces. The first measurements of spin wave excitations, in magnetite and in the 3D metal alloy CoFe, also came in this period. The first numerical estimates of the superfluid fraction of liquid helium II came from extensive measurements of the phonon–roton and multiphonon parts of the inelastic scattering. After the first two decades, neutron experiments continued at Chalk River until the shut-down of the NRU reactor in 2018 and the disbanding of the neutron effort in 2019, seventy years after the first experiments.

Heating due to long-range photon exchange interactions between cold atoms

1994 ◽  
Vol 50 (2) ◽  
pp. 1479-1489 ◽  
Author(s):  
G. Hillenbrand ◽  
C. J. Foot ◽  
K. Burnett
Keyword(s):  
Long Range ◽  
Cold Atoms ◽  
Exchange Interactions ◽  
Photon Exchange

Long-Range Ferromagnetic Exchange Interactions Mediated by Mn–CeIV–Mn Superexchange Involving Empty 4f Orbitals

2020 ◽  
Vol 59 (13) ◽  
pp. 8716-8726
Author(s):  
Sayak Das Gupta ◽  
Robert L. Stewart ◽  
Dian-Teng Chen ◽  
Khalil A. Abboud ◽  
Hai-Ping Cheng ◽  
...  
Keyword(s):  
Long Range ◽  
Exchange Interactions ◽  
Ferromagnetic Exchange
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