Unusual properties of some localized states and the quantum-classical correspondence

2007 ◽  
Vol 362 (1) ◽  
pp. 26-30 ◽  
Author(s):  
A.J. Makowski ◽  
K.J. Górska
Keyword(s):  
Localized States ◽  
Classical Correspondence

LOCALIZED STATES AND BAND STRUCTURE

1972 ◽  
Vol 33 (C3) ◽  
pp. C3-21-C3-25 ◽  
Author(s):  
F. BASSANI
Keyword(s):  
Band Structure ◽  
Localized States

COMPARISON OF OPTICALLY INDUCED LOCALIZED STATES IN CHALCOGENIDE GLASSES AND THEIR CRYSTALLINE COUNTERPARTS

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-383-C4-386 ◽  
Author(s):  
S. G. Bishop ◽  
B. V. Shanabrook ◽  
U. Strom ◽  
P. C. Taylor
Keyword(s):  
Chalcogenide Glasses ◽  
Localized States ◽  
Optically Induced

Low-Temperature Operation of Green, Blue and UV InGaN/GaN Multiple-Quantum-Well Light-Emitting Diodes

2003 ◽  
Vol 764 ◽  
Author(s):  
X. A. Cao ◽  
S. F. LeBoeuf ◽  
J. L. Garrett ◽  
A. Ebong ◽  
L. B. Rowland ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Emitting Diodes ◽  
Multiple Quantum Well ◽  
Light Output ◽  
Localized States ◽  
Multiple Quantum ◽  
Nonradiative Recombination ◽  
Light Emitting ◽  
Temperature Range ◽  
Green Leds

Absract:Temperature-dependent electroluminescence (EL) of InGaN/GaN multiple-quantum-well light-emitting diodes (LEDs) with peak emission energies ranging from 2.3 eV (green) to 3.3 eV (UV) has been studied over a wide temperature range (5-300 K). As the temperature is decreased from 300 K to 150 K, the EL intensity increases in all devices due to reduced nonradiative recombination and improved carrier confinement. However, LED operation at lower temperatures (150-5 K) is a strong function of In ratio in the active layer. For the green LEDs, emission intensity increases monotonically in the whole temperature range, while for the blue and UV LEDs, a remarkable decrease of the light output was observed, accompanied by a large redshift of the peak energy. The discrepancy can be attributed to various amounts of localization states caused by In composition fluctuation in the QW active regions. Based on a rate equation analysis, we find that the densities of the localized states in the green LEDs are more than two orders of magnitude higher than that in the UV LED. The large number of localized states in the green LEDs are crucial to maintain high-efficiency carrier capture at low temperatures.

scholarly journals Complexity of quantum motion and quantum-classical correspondence: A phase-space approach

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Jiaozi Wang ◽  
Giuliano Benenti ◽  
Giulio Casati ◽  
Wen-ge Wang
Keyword(s):  
Phase Space ◽  
Classical Correspondence ◽  
Quantum Motion ◽  
Space Approach

scholarly journals Quenched topological boundary modes can persist in a trivial system

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Ching Hua Lee ◽  
Justin C. W. Song
Keyword(s):  
Probability Density ◽  
Power Law ◽  
Localized States ◽  
Topological Phase ◽  
Boundary Mode ◽  
Temporal Boundary ◽  
And Control ◽  
Topological Boundary

AbstractTopological boundary modes can occur at the spatial interface between a topological and gapped trivial phase and exhibit a wavefunction that exponentially decays in the gap. Here we argue that this intuition fails for a temporal boundary between a prequench topological phase that possess topological boundary eigenstates and a postquench gapped trivial phase that does not possess any eigenstates in its gap. In particular, we find that characteristics of states (e.g., probability density) prepared in a topologically non-trivial system can persist long after it is quenched into a gapped trivial phase with spatial profiles that appear frozen over long times postquench. After this near-stationary window, topological boundary mode profiles decay albeit, slowly in a power-law fashion. This behavior highlights the unusual features of nonequilibrium protocols enabling quenches to extend and control localized states of both topological and non-topological origins.

scholarly journals Parameterization of localized states of liquid surface waves in non-Bragg structures

2021 ◽  
Vol 25 ◽  
pp. 104190
Author(s):  
Joshua Masinde Kundu ◽  
Ting Liu ◽  
Jia Tao ◽  
Ya-Xian Fan ◽  
Zhi-Yong Tao
Keyword(s):  
Surface Waves ◽  
Liquid Surface ◽  
Localized States ◽  
Bragg Structures ◽  
Liquid Surface Waves

scholarly journals Perpendicular space accounting of localized states in a quasicrystal

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Murod Mirzhalilov ◽  
M. Ö. Oktel
Keyword(s):  
Localized States

Spectrum of localized states in graphene quantum dots and wires

2013 ◽  
Vol 377 (3-4) ◽  
pp. 216-221 ◽  
Author(s):  
V.V. Zalipaev ◽  
D.N. Maksimov ◽  
C.M. Linton ◽  
F.V. Kusmartsev
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Localized States
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