Optical selection rules for the quantum transitions from the ground state of the crystal to the superposition states of the two-dimensional magneto-excitons

2020 ◽  
Author(s):  
Sveatoslav Moskalenko ◽  
Igor Podlesny ◽  
Ion A. Zubac ◽  
Boris Novikov
Keyword(s):  
Ground State ◽  
Two Dimensional ◽  
Selection Rules ◽  
Quantum Transitions ◽  
Superposition States

Spin-Singlet Ground State in Two-Dimensional S=1/2 Frustrated Square Lattice: (CuCl)LaNb2O7

2005 ◽  
Vol 74 (6) ◽  
pp. 1702-1705 ◽  
Author(s):  
H. Kageyama ◽  
T. Kitano ◽  
N. Oba ◽  
M. Nishi ◽  
S. Nagai ◽  
...  
Keyword(s):  
Ground State ◽  
Square Lattice ◽  
Singlet Ground State ◽  
Two Dimensional ◽  
Spin Singlet

Equilibrium states and ground state of two-dimensional fluid foams

2000 ◽  
Vol 63 (1) ◽  
Author(s):  
F. Graner ◽  
Y. Jiang ◽  
E. Janiaud ◽  
C. Flament
Keyword(s):  
Ground State ◽  
Equilibrium States ◽  
Two Dimensional

scholarly journals Two-dimensional electronic spectroscopy as a tool for tracking molecular conformations in DNA/RNA aggregates

2018 ◽  
Vol 207 ◽  
pp. 233-250 ◽  
Author(s):  
Javier Segarra-Martí ◽  
Vishal K. Jaiswal ◽  
Ana Julieta Pepino ◽  
Angelo Giussani ◽  
Artur Nenov ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Ground State ◽  
Electronic Spectra ◽  
Crucial Role ◽  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Molecular Conformations ◽  
Computational Strategy

A computational strategy to simulate two-dimensional electronic spectra (2DES) is introduced, which allows characterising ground state conformations of flexible nucleobase aggregates that play a crucial role in nucleic acid photochemistry.

HIGH FIELD PHASE DIAGRAM OF THE FIELD-INDUCED SUPERCONDUCTING STATE OF λ-(BETS)2FeCl4

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3101-3104
Author(s):  
L. BALICAS ◽  
J. S. BROOKS ◽  
K. STORR ◽  
S. UJI ◽  
M. TOKUMOTO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Superconducting State ◽  
Ground State ◽  
Electrical Transport ◽  
High Field ◽  
Two Dimensional ◽  
Exchange Field ◽  
Organic Conductor ◽  
Field Phase ◽  
Antiferromagnetic Ground State

We investigate by electrical transport the field-induced superconducting state (FISC) in the organic conductor λ- (BETS) 2 FeCl 4. Below 4 K, antiferromagnetic-insulator, metallic, and eventually superconducting (FISC) ground states are observed with increasing in-plane magnetic field. The FISC state survives between 18 and 41 T, and can be interpreted in terms of the Jaccarino-Peter effect, where the external magnetic field compensates the exchange field of aligned Fe 3+ ions. We further argue that the Fe 3+ moments are essential to stabilize the resulting singlet, two-dimensional superconducting state. Here we provide experimental evidence indicating that this state, as well as the insulating antiferromagnetic ground state, is extremely sensitive to hydrostatic pressure.

CHARGE DENSITY WAVE TRANSITIONS IN TWO-DIMENSIONAL TRANSITION METAL BRONZES AND OXIDES

1993 ◽  
Vol 07 (23n24) ◽  
pp. 3973-4003 ◽  
Author(s):  
P. FOURY ◽  
J.P. POUGET
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Ground State ◽  
Charge Density Wave ◽  
Density Wave ◽  
Electron Localization ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
A Charge ◽  
Structural Instabilities

The structural instabilities towards the formation of a charge density wave (CDW) ground state exhibited by several layered Mo and W bronzes and oxides are reviewed. It is shown that in these two-dimensional (2D) metals, including the purple bronzes A x Mo 6 O 17 (A=K, Na, Tl; x≈1), the γ and η phases of MO 4 O 11 and the monophosphate tungsten bronzes with pentagonal tunnels ( PO 2)4 ( WO 3)2m(m=4, 6, 7), the CDW instability can be associated with particular chains of MoO 6 or WO 6 octahedra of the ReO 3 type slabs along which there is a strong overlap of the t 2g orbitals. The CDW critical wave vectors of the purple bronzes, Mo 4 O 11 and the tungsten bronzes with m=4 and 6 lead to a common nesting between differently oriented 1D Fermi surfaces. It is suggested that the anharmonic CDW modulation, which occurs in the tungsten bronzes with m≥7, could be the structural fingerprint of electron localization effects.

Effect of the lifetime of the intermediate 5Li state in the 6Li(3He, αp)4He reaction

1968 ◽  
Vol 46 (20) ◽  
pp. 2241-2251 ◽  
Author(s):  
M. A. Reimann ◽  
P. W. Martin ◽  
E. W. Vogt
Keyword(s):  
Dimensional Analysis ◽  
Energy Dependence ◽  
Ground State ◽  
Intermediate State ◽  
Two Dimensional ◽  
Short Life ◽  
Semiclassical Model ◽  
Analysis Technique ◽  
The Asymmetry

A cylindrical asymmetry about the direction of motion of 5Li has been seen in the breakup of the ground state of this nucleus observed as an intermediate state in the reaction 6Li(3He, pα)4He. Measurements were made at bombarding energies of 1.00, 1.25, and 1.50 MeV with isotopically enriched LiF targets using a two-dimensional analysis technique. We explain both the rough magnitude of the asymmetry and its qualitative energy dependence in terms of a simple semiclassical model. In this model the origin of the asymmetry is associated with the short life of the 5Li intermediate state and with the memory retained by the proton during this short life of its "localization" at the time of formation of 5Li.

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