scholarly journals Weak localization behavior observed in graphene grown on germanium substrate

AIP Advances ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 045214 ◽  
Author(s):  
Yinbo Sun ◽  
Miao Zhang ◽  
Linxi Dong ◽  
Gaofeng Wang ◽  
Xiaoming Xie ◽  
...  
Keyword(s):  
Weak Localization ◽  
Germanium Substrate ◽  
Localization Behavior

INTERPLAY BETWEEN SPIN AND CRYSTAL LATTICES IN ANTIFERROMAGNETIC YBa2Cu3O6.25

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3208-3211
Author(s):  
V. SANDU ◽  
E. CIMPOIASU ◽  
C. C. ALMASAN ◽  
A. P. PAULIKAS ◽  
B. W. VEAL
Keyword(s):  
Spin System ◽  
Weak Localization ◽  
Two Dimensional ◽  
Variable Range Hopping ◽  
Crystal Lattices ◽  
Resistivity Measurements ◽  
Antiferromagnetic Ordering ◽  
Wide Range ◽  
Out Of Plane ◽  
Localization Behavior

In-plane ρ ab and out-of-plane ρ c resistivity measurements were performed on the same antiferromagnetic YBa 2 Cu 3 O 6.25 single crystal over a wide range of temperatures T. ρ ab (T) exhibits two crossovers with decreasing T: a crossover from metallic to weak localization behavior at 175 K and a second crossover to two-dimensional chiral variable-range hopping VRH behavior at 115 K. The latter reflects the topologic excitations induced in the spin system. ρ c (T) displays an [Formula: see text] dependence at high T and a VRH type dependence below 115 K. The T derivative of ρ c (T) shows a kink at 32.65 K which we attribute to the antiferromagnetic ordering of the Cu(1) spins.

scholarly journals Anomalous Anderson localization behavior in gain-loss balanced non-Hermitian systems

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 443-452
Author(s):  
Tianshu Jiang ◽  
Anan Fang ◽  
Zhao-Qing Zhang ◽  
Che Ting Chan
Keyword(s):  
Wave Propagation ◽  
Electromagnetic Waves ◽  
Anderson Localization ◽  
Random Media ◽  
Normal Incidence ◽  
Disordered Media ◽  
One Dimensional ◽  
Gain Loss ◽  
The Waves ◽  
Localization Behavior

AbstractIt has been shown recently that the backscattering of wave propagation in one-dimensional disordered media can be entirely suppressed for normal incidence by adding sample-specific gain and loss components to the medium. Here, we study the Anderson localization behaviors of electromagnetic waves in such gain-loss balanced random non-Hermitian systems when the waves are obliquely incident on the random media. We also study the case of normal incidence when the sample-specific gain-loss profile is slightly altered so that the Anderson localization occurs. Our results show that the Anderson localization in the non-Hermitian system behaves differently from random Hermitian systems in which the backscattering is suppressed.

scholarly journals Localization behavior at bound Bi complex states in GaAs1−xBix

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
K. Alberi ◽  
T. M. Christian ◽  
B. Fluegel ◽  
S. A. Crooker ◽  
D. A. Beaton ◽  
...  
Keyword(s):  
Localization Behavior

Weak localization in ballistic quantum dots

1999 ◽  
Vol 60 (4) ◽  
pp. 2680-2690 ◽  
Author(s):  
R. Akis ◽  
D. K. Ferry ◽  
J. P. Bird ◽  
D. Vasileska
Keyword(s):  
Quantum Dots ◽  
Weak Localization

scholarly journals Weak localization and conductance fluctuations-like effects in Qubits driven by biharmonic signals

2014 ◽  
Vol 568 (5) ◽  
pp. 052028 ◽  
Author(s):  
Alejandro Ferrón ◽  
Daniel Domínguez ◽  
María José Sánchez
Keyword(s):  
Weak Localization ◽  
Conductance Fluctuations

scholarly journals Accurate Electron Drift Mobility Measurements in Moderately Dense Helium Gas at Several Temperatures

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 52
Author(s):  
Armando Francesco Borghesani
Keyword(s):  
Weak Localization ◽  
Drift Mobility ◽  
Zero Field ◽  
Scattering Effects ◽  
Helium Gas ◽  
Excellent Description ◽  
Intermediate Density ◽  
Electron Drift Mobility ◽  
Multiple Scattering Effects ◽  
Density Regime

We report new accurate measurements of the drift mobility μ of quasifree electrons in moderately dense helium gas in the temperature range 26K≤T≤300K for densities lower than those at which states of electrons localized in bubbles appear. By heuristically including multiple-scattering effects into classical kinetic formulas, as previously done for neon and argon, an excellent description of the field E, density N, and temperature T dependence of μ is obtained. Moreover, the experimental evidence suggests that the strong decrease of the zero-field density-normalized mobility μ0N with increasing N from the low up to intermediate density regime is mainly due to weak localization of electrons caused by the intrinsic disorder of the system, whereas the further decrease of μ0N for even larger N is due to electron self-trapping in cavities. We suggest that a distinction between weakly localized and electron bubble states can be done by inspecting the behavior of μ0N as a function of N at intermediate densities.

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