Spin states of atoms and molecules in the cosmic medium

Varshalovich, D.A.

doi:10.3367/ufnr.0101.197007a.0369

Usp. Fiz. Nauk

1970

DOI: 10.3367/ufnr.0101.197007a.0369

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Spin states of atoms and molecules in the cosmic medium

D.A. Varshalovich

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1976

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Cited by 12 publications

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“…It is seen from (3.9) and (3.5) that (S1.Z) = + ( A 29 (SII,,) = -$ ( A , ) (3.10) in the antiferromagnetic state.Allowing for (3.6), we obtain from (3.10) that the inequality( A , ) + 0 (3.11)should be satisfied in the antiferromagnetic state. This inequality constitutes an indispensable condition for the realization of the antiferromagnetic state determined by the correlations (3.5) to (3.6).The antisymmetric vector operator (3.8) can convert a crystal from the state with spin S into the state with spin S' which is specified by the conditions S ' = S + 1 , S ' = S .…”

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Multiplicity and pseudomultiplicity of electron‐ion systems (I)

Vonsovskii

Svirskii

1976

Physica Status Solidi (b)

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Contents 1 . Introduction 2. Effect of ion multiplicity on electron exchange interactions i n crgstals 2.1 Generalized s-d(f) exchange interaction Hamiltonian allowing for exci-2.2 Generalized s-f exchange interaction Hamiltonian 2.3 Generalized direct exchange interaction Hamiltonian. Multiplicity waves 2.4 Generalized indirect exchange interaction Hamiltonian 2.5 Effect of ion multiplicity excitations on electric resistivity of metals 2.6 Effect of multiplicity excitations on the critical temperature of supercon-tations of spin multiplicity of d shells ductors 3. Spin s y s t e m multiplicity of the crgstal as a whole 3.1 Multiplicity indeterminancy of antiferromagnets 3.2 Multiplicity indeterminancy in the case of weak ferromagnetism 3.3 Multiplicity indeterminancy of helical magnetic structures References (Part I ) the establishment of the chemical valency of atoms [5], in t,he phenomenon of sensitized phosphorescence [6], in the photosynthesis of green plants 171, in the occurrence of stimulated radiation [8], in the resonance spin orientation in cosmic space [9], in the formation of Cooper pairs of superconductors [lo], and many others.Thus, multiplicity excitations are important not only for physical, but also for astrophysical, chemical, and biological phenomena.The quantum system of a gaseous or a condensed phase may deal both with mulbiplicity excitations of separate atomic particles, for example, magnetic ions, and the entire body (for example, of a crystal) as a whole. For instance, in the quantum theory of ferromagnetism the collective magnetic excitations, viz. x = 2 s + 1 , x = 2 J + l .

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confidence: 99%

Multiplicity and pseudomultiplicity of electron‐ion systems (I)

Vonsovskii

Svirskii

1976

Physica Status Solidi (b)

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Orientation of cosmic dust grains

Dolginov¹,

Mytrophanov²

1976

Astrophys Space Sci

224

256

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Formation of emission spectra in movin media

Гринин¹

1984

Astrophysics

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Spin states of atoms and molecules in the cosmic medium

Cited by 12 publications

References 2 publications

Multiplicity and pseudomultiplicity of electron‐ion systems (I)

Multiplicity and pseudomultiplicity of electron‐ion systems (I)

Orientation of cosmic dust grains

Formation of emission spectra in movin media

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