scholarly journals The appearance of an interval of energies that contain the whole diamagnetic contribution to NMR magnetic shieldings

2007 ◽  
Vol 127 (15) ◽  
pp. 154115 ◽  
Author(s):  
Alejandro Maldonado ◽  
Gustavo A. Aucar
Keyword(s):  
Diamagnetic Contribution

scholarly journals The temperature dependence of free electron susceptibility

1935 ◽  
Vol 152 (877) ◽  
pp. 672-692 ◽  
Keyword(s):  
Magnetic Field ◽  
Electron Spin ◽  
Free Electron ◽  
Low Temperatures ◽  
Electron Gas ◽  
Spin Effect ◽  
Degenerate State ◽  
Diamagnetic Contribution ◽  
The Moment ◽  
Diamagnetic Effect

One of the earliest applications of the Fermic-Dirac statistics was that of pauli to the treatment of the paramagnetism, due to the electron spin, of an electron gas. The result he obtained, for low temperatures, may be put in the form M p = 3/2 Nμ 2 H/ε 0 , where M p is the total magnetic moment due to the spin effect, N the number of electrons, μ the Bohr magneton, and ε 0 the maximum electron energy in the completely degenerate state. It was later shown by Landau that electrons, apart from the spin effect, gave a diamagnetic contribution to the susceptibility. The diamagnetic effect (which is zero on a classical basis) arises from the discreteness of the energy states of an electron in a magnetic field. For low temperatures the result obtained is M D = -½ Nμ 2 H/ε 0 , where M D is the diamagnetic contribution to the moment. The spin effect was further considered by Bloch, who gave, as a higher approximation at low temperatures, M P = 3/2 Nμ 2 H/ε 0 {1-π 2 /12( k T/ε 0 ) 2 }.

scholarly journals Paramagnetic versus Diamagnetic Interaction in the SU(2) Higgs Model

Symmetry ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1237
Author(s):  
Dmitry Antonov
Keyword(s):  
Gauge Boson ◽  
Effective Action ◽  
Dimensional Reduction ◽  
Higgs Model ◽  
Analytic Calculation ◽  
Standard Result ◽  
Correlation Lengths ◽  
Yang Mills ◽  
Diamagnetic Contribution ◽  
The One

We present an analytic calculation of the paramagnetic and diamagnetic contributions to the one-loop effective action in the SU(2) Higgs model. The paramagnetic contribution is produced by the gauge boson, while the diamagnetic contribution is produced by the gauge boson and the ghost. In the limit, where these particles are massless, the standard result of - 12 for the ratio of the paramagnetic to the diamagnetic contribution is reproduced. If the mass of the gauge boson and the ghost become much larger than the inverse vacuum correlation lengths of the Yang–Mills vacuum, the value of the ratio goes to - 8 . We also find that the same values of the ratio are achieved in the deconfinement phase of the model, up to the temperatures at which the dimensional reduction occurs.

scholarly journals A Mathematical Formulation for Diamagnetism in Tetrahedrally Bonded Semiconductors

1997 ◽  
Vol 19 (4) ◽  
pp. 265-267
Author(s):  
M. A. Grado-Caffaro ◽  
M. Grado-Caffaro
Keyword(s):  
Magnetic Susceptibility ◽  
Crystalline State ◽  
Mathematical Formulation ◽  
Susceptibility Tensor ◽  
Magnetic Susceptibility Tensor ◽  
Diamagnetic Contribution ◽  
Tetrahedrally Bonded

An expression for the magnetic susceptibility tensor corresponding to diamagnetic contribution in tetrahedrally bonded semiconductors is derived; this formulation refers to the crystalline state. In addition, a comparison with the amorphous case is outlined.

Diamagnetic contribution to the effect of in-plane magnetic field on a quantum-dot exciton fine structure

2007 ◽  
Vol 76 (19) ◽  
Author(s):  
M. M. Glazov ◽  
E. L. Ivchenko ◽  
O. Krebs ◽  
K. Kowalik ◽  
P. Voisin
Keyword(s):  
Magnetic Field ◽  
Fine Structure ◽  
Quantum Dot ◽  
Diamagnetic Contribution

Diamagnetic contribution to thermal fluctuations of the magnetization

1977 ◽  
Vol 67 (7) ◽  
pp. 3126-3132 ◽  
Author(s):  
U. M. Titulaer ◽  
B. U. Felderhof
Keyword(s):  
Thermal Fluctuations ◽  
Diamagnetic Contribution

scholarly journals Кинетика изменения концентраций магнитных ионов примеси в сплавах Pb-=SUB=-1-x-y-=/SUB=-Sn-=SUB=-x-=/SUB=-V-=SUB=-y-=/SUB=-Te при легировании

2018 ◽  
Vol 52 (7) ◽  
pp. 686
Author(s):  
Е.П. Скипетров ◽  
Н.С. Константинов ◽  
Л.А. Скипетрова ◽  
А.В. Кнотько ◽  
В.Е. Слынько
Keyword(s):  
Electronic Structure ◽  
Crystal Lattice ◽  
X Ray ◽  
Structure Rearrangement ◽  
Galvanomagnetic Properties ◽  
Temperature Dependences ◽  
Stockbarger Method ◽  
Diamagnetic Contribution ◽  
Magnetic States ◽  
Vanadium Ions

AbstractThe field and temperature dependences of the magnetization (magnetic fields B ≤ 7.5 T, temperatures T = 2.0–75 K) of samples from a Pb_1– x – y Sn_ x V_ y Te ( x = 0.08, y = 0.01) single-crystal ingot synthesized by the Bridgman–Stockbarger method. It is established that the sample magnetization contains two main contributions, notably, the paramagnetism of vanadium ions and diamagnetism of the crystal lattice. The field and temperature dependences of the magnetization are approximated by the sum of modified Brillouin functions corresponding to the paramagnetic contributions of vanadium in two different charge states and the diamagnetic contribution linear in terms of field. The concentrations of vanadium ions in two different magnetic states and the character of their variation along the ingot are determined within the scope of the alloy’s electronic-structure rearrangement because of doping. The results are compared with the data of X-ray fluorescence microanalysis and the results of studying the galvanomagnetic properties of the samples.

Theoretical study of magnetic susceptibilities of small molecules by SCF-LCAO-MO-MINDO/3 method

1980 ◽  
Vol 58 (8) ◽  
pp. 767-771
Author(s):  
Prabhat K. K. Pandey ◽  
P. Chandra
Keyword(s):  
Magnetic Susceptibility ◽  
Small Molecules ◽  
Theoretical Study ◽  
Gauge Invariant ◽  
Magnetic Susceptibilities ◽  
Atomic Orbitals ◽  
Paramagnetic Contribution ◽  
Indo Calculations ◽  
Diamagnetic Contribution ◽  
Lcao Mo

Magnetic susceptibilities of small hydrocarbons and water are calculated by employing gauge-invariant atomic orbitals within MINDO/3 approximation. A comparison with available INDO calculations indicates that MINDO/3 gives reasonable values for diamagnetic contribution, but in general overestimates the paramagnetic contribution to magnetic susceptibility.

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