scholarly journals Fragility of the Kondo insulating gap against disorder: Relevance to recent puzzles in topological Kondo insulators

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Sudeshna Sen ◽  
N. S. Vidhyadhiraja ◽  
Eduardo Miranda ◽  
Vladimir Dobrosavljević ◽  
Wei Ku
Keyword(s):  
Kondo Insulators ◽  
Insulating Gap

scholarly journals Magnetic field-tuned Fermi liquid in a Kondo insulator

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Satya K. Kushwaha ◽  
Mun K. Chan ◽  
Joonbum Park ◽  
S. M. Thomas ◽  
Eric D. Bauer ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Spin ◽  
Fermi Liquid ◽  
Critical Magnetic Field ◽  
Quantum Criticality ◽  
Kondo Insulator ◽  
Kondo Insulators ◽  
Insulator Metal Transition ◽  
Insulating Gap ◽  
The Magnetic Field

AbstractKondo insulators are expected to transform into metals under a sufficiently strong magnetic field. The closure of the insulating gap stems from the coupling of a magnetic field to the electron spin, yet the required strength of the magnetic field–typically of order 100 T–means that very little is known about this insulator-metal transition. Here we show that Ce$${}_{3}$$3Bi$${}_{4}$$4Pd$${}_{3}$$3, owing to its fortuitously small gap, provides an ideal Kondo insulator for this investigation. A metallic Fermi liquid state is established above a critical magnetic field of only $${B}_{{\rm{c}}}\approx$$Bc≈ 11 T. A peak in the strength of electronic correlations near $${B}_{{\rm{c}}}$$Bc, which is evident in transport and susceptibility measurements, suggests that Ce$${}_{3}$$3Bi$${}_{4}$$4Pd$${}_{3}$$3 may exhibit quantum criticality analogous to that reported in Kondo insulators under pressure. Metamagnetism and the breakdown of the Kondo coupling are also discussed.

scholarly journals Critical Ising modes in low-dimensional Kondo insulators

1999 ◽  
Vol 60 (12) ◽  
pp. 9116-9121 ◽  
Author(s):  
Karyn Le Hur
Keyword(s):  
Kondo Insulators ◽  
Low Dimensional

scholarly journals Theory of topological Kondo insulators

2012 ◽  
Vol 85 (4) ◽  
Author(s):  
Maxim Dzero ◽  
Kai Sun ◽  
Piers Coleman ◽  
Victor Galitski
Keyword(s):  
Kondo Insulators

Revealing the insulating gap in α′-NaV2O5with resonant inelastic x-ray scattering

2012 ◽  
Vol 24 (32) ◽  
pp. 325402 ◽  
Author(s):  
F Bondino ◽  
A Barla ◽  
T Schmitt ◽  
V N Strocov ◽  
J-Y Henry ◽  
...  
Keyword(s):  
X Ray ◽  
X Ray Scattering ◽  
Insulating Gap ◽  
Ray Scattering

scholarly journals Dynamics and transport properties of Kondo insulators

2003 ◽  
Vol 15 (24) ◽  
pp. 4045-4087 ◽  
Author(s):  
N S Vidhyadhiraja ◽  
Victoria E Smith ◽  
David E Logan ◽  
H R Krishnamurthy
Keyword(s):  
Transport Properties ◽  
Kondo Insulators

Experimental study of the discharge glow structure in the initial phase of a nanosecond breakdown of an insulating gap

2005 ◽  
Vol 50 (7) ◽  
pp. 876-880 ◽  
Author(s):  
E. G. Danchenko ◽  
P. B. Repin ◽  
A. G. Rep’ev
Keyword(s):  
Experimental Study ◽  
Initial Phase ◽  
Insulating Gap

Effects of a magnetic field in Kondo insulators: An exact diagonalization study of the Anderson lattice model

1997 ◽  
Vol 230-232 ◽  
pp. 421-424 ◽  
Author(s):  
K. Tsutsui ◽  
Y. Ohta ◽  
R. Eder ◽  
S. Maekawa ◽  
E. Dagotto ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Lattice Model ◽  
Exact Diagonalization ◽  
Kondo Insulators

Electrical and photoelectrical properties of semi-insulating GaP

1983 ◽  
Vol 80 (1) ◽  
pp. 159-164 ◽  
Author(s):  
G. Kühnel ◽  
W. Siegel ◽  
E. Ziegler
Keyword(s):  
Photoelectrical Properties ◽  
Insulating Gap
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