Anisotropic Zeeman Splitting in Quasi-2D Systems

2003 ◽  
pp. 131-150 ◽  
Author(s):  
Roland Winkler
Keyword(s):  
Zeeman Splitting ◽  
2D Systems

Zeeman splitting of excitons in CdTe/CdMnTe quantum wells

1998 ◽  
Vol 184-185 (1-2) ◽  
pp. 942-946
Author(s):  
G Fishman
Keyword(s):  
Quantum Wells ◽  
Zeeman Splitting

Spin Resonance

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Magnetic Resonance ◽  
Nuclear Spin ◽  
Electromagnetic Waves ◽  
Zeeman Splitting ◽  
Resonant Absorption ◽  
Magnetic Interactions ◽  
Spin Effects ◽  
Crystalline Environment ◽  
Spin Resonance ◽  
Optically Detected

This chapter is devoted to one of key phenomena in the field of spin physics, namely, resonant absorption of electromagnetic waves under conditions where the Zeeman splitting of spin levels in magnetic field is equal to photon energy. This method is particularly important for identification of nuclear spin effects, because resonance spectra provide fingerprints of different involved spin species and make it possible to distinguish different nuclear isotopes. As discussed in this chapter the nuclear magnetic resonance provides also an access to local magnetic fields acting on nuclear spins. These fields are caused by the magnetic interactions between the nuclei and by the quadrupole splittings of nuclear spin states in anisotropic crystalline environment. Manifestations of spin resonance in optical responses of semiconductors–that is, optically detected magnetic resonance–are discussed.

Zeeman splitting features of electronic states of rare earth ions in TbF3 crystal

2021 ◽  
Vol 117 ◽  
pp. 111141
Author(s):  
U.V. Valiev ◽  
D.N. Karimov ◽  
M.G. Brik ◽  
C.G. Ma ◽  
R.R. Vildanov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Electronic States ◽  
Zeeman Splitting ◽  
Rare Earth Ions

scholarly journals Temperature-Induced Plasmon Excitations for the α–T3 Lattice in Perpendicular Magnetic Field

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1720
Author(s):  
Antonios Balassis ◽  
Godfrey Gumbs ◽  
Oleksiy Roslyak
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Zeeman Splitting ◽  
Mass Term ◽  
Energy Dispersive Spectrum ◽  
Wave Functions ◽  
Transition Energies ◽  
Gap Opening ◽  
Quantizing Magnetic Field

We have investigated the α–T3 model in the presence of a mass term which opens a gap in the energy dispersive spectrum, as well as under a uniform perpendicular quantizing magnetic field. The gap opening mass term plays the role of Zeeman splitting at low magnetic fields for this pseudospin-1 system, and, as a consequence, we are able to compare physical properties of the the α–T3 model at low and high magnetic fields. Specifically, we explore the magnetoplasmon dispersion relation in these two extreme limits. Central to the calculation of these collective modes is the dielectric function which is determined by the polarizability of the system. This latter function is generated by transition energies between subband states, as well as the overlap of their wave functions.

scholarly journals Entropy, Information, and Symmetry: Ordered is Symmetrical

Entropy ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 11 ◽  
Author(s):  
Edward Bormashenko
Keyword(s):  
Binary System ◽  
Physical System ◽  
Quantitative Measure ◽  
2D Systems ◽  
Two Dimensional ◽  
One Dimensional ◽  
Entropy Information

Entropy is usually understood as the quantitative measure of “chaos” or “disorder”. However, the notions of “chaos” and “disorder” are definitely obscure. This leads to numerous misinterpretations of entropy. We propose to see the disorder as an absence of symmetry and to identify “ordering” with symmetrizing of a physical system; in other words, introducing the elements of symmetry into an initially disordered physical system. We demonstrate with the binary system of elementary magnets that introducing elements of symmetry necessarily diminishes its entropy. This is true for one-dimensional (1D) and two-dimensional (2D) systems of elementary magnets. Imposing symmetry does not influence the Landauer principle valid for the addressed systems. Imposing the symmetry restrictions onto the system built of particles contained within the chamber divided by the permeable partition also diminishes its entropy.

PERMITTIVITY IN PERTURBED MOLECULAR NANOFILMS

2012 ◽  
Vol 26 (15) ◽  
pp. 1250078 ◽  
Author(s):  
BRANKO MARKOSKI ◽  
JOVAN P. ŠETRAJČIĆ ◽  
MIROSLAVA PETREVSKA ◽  
SINIŠA VUČENOVIĆ
Keyword(s):  
Optical Properties ◽  
Dielectric Properties ◽  
Green's Functions ◽  
Green’S Functions ◽  
Microscopic Theory ◽  
2D Systems ◽  
Molecular Films ◽  
Temperature Dependent

A microscopic theory of dielectric properties of thin molecular films, i.e., quasi 2D systems bounded by two surfaces parallel to XY planes was formulated. Harmonic exciton states were calculated using the method of two-time, retarded, temperature dependent Green's functions. It has been shown that two types of excitations can occur: bulk and surface exciton states. Analysis of the optical properties of these crystalline systems for low exciton concentration shows that the permittivity strongly depends on boundary parameters and the thickness of the film. Conditions for the appearance of localized or unoccupied exciton states have been especially analyzed.

Plasmon excitation by coulomb scattering of electrons in 2D systems

Physica B+C ◽  
1983 ◽  
Vol 117-118 ◽  
pp. 646-648 ◽  
Author(s):  
R.A. Höpfel ◽  
E. Gornik ◽  
A.C. Gossard ◽  
W. Wiegmann
Keyword(s):  
Coulomb Scattering ◽  
2D Systems ◽  
Plasmon Excitation

Near-Field Magneto-Photoluminescence of Singe Self-Organized Quantum Dots.

2003 ◽  
Vol 794 ◽  
Author(s):  
A. M. Mintairov ◽  
A. S. Vlasov ◽  
J. L. Merz
Keyword(s):  
Quantum Dots ◽  
Near Field ◽  
Energy Shift ◽  
Zeeman Splitting ◽  
Negative Energy ◽  
Zero Magnetic Field ◽  
Bimodal Size Distribution ◽  
Self Organized ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

ABSTRACTWe present results obtained using low temperature near-field scanning optical microscopy for the measurements of Zeeman splitting and the diamagnetic shift of single self-organized InAs/AlAs, InAs/GaAs and InP/GaInP quantum dots. The measurements allow us to relate the bimodal size distribution of InAs dots with variations in In content. For single InP QDs we observed a strong circular polarization at zero magnetic field accompanied with a negative energy shift, suggesting that strong internal magnetic fields exist in these QDs.

Steady-state and picosecond investigation of hot carrier-phonon interactions in 2D systems

1986 ◽  
Vol 174 (1-3) ◽  
pp. A446
Author(s):  
J. Shah ◽  
A. Pinczuk ◽  
A.C. Gossard ◽  
W. Wiegmann ◽  
K. Kash
Keyword(s):  
Steady State ◽  
2D Systems ◽  
Hot Carrier
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