scholarly journals Dispersion of natural oscillations of magnetic moments in a permalloy film: Mandel'shtam-Brillouin scattering data.

2018 ◽  
Vol 2018 (12) ◽  
Author(s):  
V.D. Bessonov ◽  
◽  
A.V. Telegin ◽  
V.A. Bessonova ◽  
V.S. Teplov ◽  
...  
Keyword(s):  
Brillouin Scattering ◽  
Magnetic Moments ◽  
Scattering Data ◽  
Permalloy Film ◽  
Natural Oscillations

QUANTUM CRITICAL FLUCTUATIONS IN HEAVY FERMION COMPOUNDS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3031-3036 ◽  
Author(s):  
A. SCHROEDER ◽  
G. AEPPLI ◽  
P. COLEMAN ◽  
R. RAMAZASHVILI ◽  
R. COLDEA ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Heavy Fermion ◽  
Magnetic Moments ◽  
Quantum Critical Point ◽  
Electron System ◽  
Spin Fluctuations ◽  
Scattering Data ◽  
Critical Fluctuations ◽  
Conventional View ◽  
Quantum Critical

The electronic properties of heavy fermion alloys are dominated by spin fluctuations which are expected to become critical when tuned by pressure to a quantum critical point (QCP), entering a magnetic ordered state. Apart from the onset of exotic superconductivity, unexpected "normal conducting" behavior is found close to the QCP, which does not seem only to escape the conventional view of metals (Fermi liquids) but also the "conventional view" of an antiferromagnetic quantum phase transition in these f-metals. So far only few compounds have been investigated by neutron scattering to directly reveal the critical fluctuations spectrum. In CeCu 59 Au 01 the fluctuations develop an unusual energy dependence, characterized by an exponent α = 0.75, which persist over the entire Brillouin zone, provoking an unexpected local non Fermi liquid behavior. The same unusual exponent derived from E/T scaling determines the H/T scaling of the uniform magnetization. Recent neutron scattering data in magnetic fields further confirm this picture of nearly free local magnetic moments (modified by α) emerging at the antiferromagnetic QCP in this strongly correlated electron system.

Thermoelectric Properties of Single-Wall Carbon Nanotubes

1998 ◽  
Vol 545 ◽  
Author(s):  
L. Grigorian ◽  
G. Sumanasekera ◽  
P. C Eklund
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Magnetic Moments ◽  
Scattering Data ◽  
Single Wall Carbon Nanotubes ◽  
X Ray Diffraction ◽  
Electrical Transport Properties ◽  
Single Wall Carbon ◽  
Impurity Atoms ◽  
Kondo System

AbstractResults of the temperature dependence of the thermoelectric power and fourprobe resistance of single wall carbon nanotube mats are presented. The data are interpreted in terms of the response of a percolating network of metallic nanotube bundles. To the best of our knowledge, the work represents the first systematic study of the transport properties of a series of samples prepared using different transition metal-Y growth catalysts. Although x-ray diffraction and Raman scattering data indicate these samples are nominally the same, we find that the identity of the catalyst has a pronounced effect on the electrical transport properties. The data are interpreted qualitatively in terms of a dilute Kondo system involving the coupling of the the localized magnetic moments of impurity atoms (derived from the catalyst), and the conduction electron spins in the nanotube walls.

Bayesian approach to the analysis of neutron Brillouin scattering data on liquid metals

2016 ◽  
Vol 94 (2) ◽  
Author(s):  
A. De Francesco ◽  
E. Guarini ◽  
U. Bafile ◽  
F. Formisano ◽  
L. Scaccia
Keyword(s):  
Bayesian Approach ◽  
Liquid Metals ◽  
Brillouin Scattering ◽  
Scattering Data

Brillouin scattering from cross-linked gels

1992 ◽  
Vol 2 (12) ◽  
pp. 2081-2088 ◽  
Author(s):  
Francesco Mallamace ◽  
Norberto Micali ◽  
Cirino Vasi ◽  
Rama Bansil ◽  
Sinisa Pajevic ◽  
...  
Keyword(s):  
Brillouin Scattering

Entropy determination by scattering data

1994 ◽  
Vol 4 (8) ◽  
pp. 1289-1298
Author(s):  
S. Ciccariello ◽  
Y. Hassan
Keyword(s):  
Scattering Data
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