Critical behavior of ultrasonic attenuation near interaction-driven metal-insulator transitions

1991 ◽  
Vol 44 (11) ◽  
pp. 5432-5443 ◽  
Author(s):  
V. Dobrosavljević ◽  
T. R. Kirkpatrick ◽  
Changfeng Chen ◽  
D. Belitz
Keyword(s):  
Critical Behavior ◽  
Ultrasonic Attenuation ◽  
Metal Insulator

scholarly journals METAL–INSULATOR TRANSITIONS IN TETRAHEDRAL SEMICONDUCTORS UNDER LATTICE CHANGE

2004 ◽  
Vol 18 (07) ◽  
pp. 975-988
Author(s):  
SHAILESH SHUKLA ◽  
DEEPAK KUMAR ◽  
NITYA NATH SHUKLA ◽  
RAJENDRA PRASAD
Keyword(s):  
Dielectric Constant ◽  
Fermi Surface ◽  
Lattice Constant ◽  
Critical Behavior ◽  
Tight Binding ◽  
Metal Insulator ◽  
Wide Range ◽  
Insulating Phase ◽  
Tetrahedral Semiconductors ◽  
Lattice Compression

Although most insulators are expected to undergo insulator to metal transition on lattice compression, tetrahedral semiconductors Si, GaAs and InSb can become metallic on compression as well as by expansion. We focus on the transition by expansion which is rather peculiar; in all cases the direct gap at Γ point closes on expansion and thereafter a zero-gap state persists over a wide range of lattice constant. The solids become metallic at an expansion of 13% to 15% when an electron Fermi surface around L-point and a hole Fermi surface at Γ-point develop. We provide an understanding of this behavior in terms of arguments based on symmetry and simple tight-binding considerations. We also report results on the critical behavior of conductivity in the metal phase and the static dielectric constant in the insulating phase and find common behavior. We consider the possibility of excitonic phases and distortions which might intervene between insulating and metallic phases.

Critical Behavior of the Ultrasonic Attenuation for the Binary Mixture of Water and Phenol

2017 ◽  
Vol 103 (1) ◽  
pp. 1-5
Author(s):  
Maryam Reehan ◽  
Mohammad Abu-Jafar ◽  
Issam Abdelraziq
Keyword(s):  
Binary Mixture ◽  
Critical Behavior ◽  
Ultrasonic Attenuation

scholarly journals Critical behavior of transport and magnetotransport in a 2D electron system in Si near the metal-insulator transition

JETP Letters ◽  
2007 ◽  
Vol 84 (12) ◽  
pp. 662-666 ◽  
Author(s):  
D. A. Knyazev ◽  
O. E. Omel’yanovskii ◽  
V. M. Pudalov ◽  
I. S. Burmistrov
Keyword(s):  
Critical Behavior ◽  
Electron System ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Critical behavior of the thermopower near the metal-insulator transition

1991 ◽  
Vol 43 (13) ◽  
pp. 11088-11092 ◽  
Author(s):  
M. Fabrizio ◽  
C. Castellani ◽  
G. Strinati
Keyword(s):  
Critical Behavior ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Multifractal Specific Heat of Disordered Mesoscopic Systems

1998 ◽  
Vol 12 (01) ◽  
pp. 11-15 ◽  
Author(s):  
A. Bershadskii
Keyword(s):  
Magnetic Field ◽  
Numerical Simulations ◽  
Specific Heat ◽  
High Magnetic Field ◽  
Critical Behavior ◽  
Two Dimensional ◽  
Mesoscopic Systems ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Good Agreement

It is shown that multifractal data on critical behavior of wavefunctions at the Anderson metal–insulator transition obtained in numerical simulations are in good agreement with constant specific-heat multifractal approximation for three and two dimensional cases (in the last case in high magnetic field). A relation of this approximation to the parabolic multifractal approximation is also briefly discussed.

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