scholarly journals Inducing a metal-insulator transition in disordered interacting Dirac fermion systems via an external magnetic field

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
Jingyao Meng ◽  
Rubem Mondaini ◽  
Tianxing Ma ◽  
Hai-Qing Lin
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Insulator Transition ◽  
Dirac Fermion ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Fermion Systems

EFFECT OF DISORDER ON THE ELECTRICAL PROPERTIES OF AMORPHOUS CONDUCTING CARBON FILMS: OBSERVANCE OF FIELD INDUCED METAL-INSULATOR TRANSITION?

2000 ◽  
Vol 14 (02n03) ◽  
pp. 224-229 ◽  
Author(s):  
V. MEENAKSHI ◽  
S. V. SUBRAMANYAM
Keyword(s):  
Magnetic Field ◽  
Electrical Properties ◽  
External Magnetic Field ◽  
Low Temperature ◽  
Carbon Films ◽  
Electronic Systems ◽  
Metal Insulator Transition ◽  
Preparation Temperature ◽  
Metal Insulator ◽  
Effect Of Disorder

In this work, the influence of disorder on the electrical properties (DC conductivity and Magnetoresistance) of amorphous conducting carbon films, prepared by the pyrolysis of Tetra chloro phthalic anhydride, is reported and discussed. The low temperature electrical properties are analyzed in terms of the various models developed for disordered electronic systems. The results indicate the possibility of a metal - insulator (M-I) transition, both as a function of preparation temperature and an external magnetic field.

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