scholarly journals Topological nature of the Kondo insulator SmB6 and its sensitiveness to Sm vacancy

2021 ◽  
Vol 103 (15) ◽  
Author(s):  
W. K. Park ◽  
J. A. Sittler ◽  
L. H. Greene ◽  
W. T. Fuhrman ◽  
J. R. Chamorro ◽  
...  
Keyword(s):  
Kondo Insulator

Surface Conductivity of the Ytterbium-Doped Topological Kondo-Insulator SmB6

2020 ◽  
Vol 65 (7) ◽  
pp. 233-237
Author(s):  
S. V. Demishev ◽  
M. A. Anisimov ◽  
V. V. Voronov ◽  
M. I. Gilmanov ◽  
V. V. Glushkov ◽  
...  
Keyword(s):  
Surface Conductivity ◽  
Kondo Insulator

scholarly journals Robust hybridization gap in the Kondo insulator YbB12 probed by femtosecond optical spectroscopy

2021 ◽  
Vol 103 (11) ◽  
Author(s):  
A. R. Pokharel ◽  
S. Y. Agustsson ◽  
V. V. Kabanov ◽  
F. Iga ◽  
T. Takabatake ◽  
...  
Keyword(s):  
Optical Spectroscopy ◽  
Kondo Insulator ◽  
Femtosecond Optical Spectroscopy

Anisotropic magnetoresistance as evidence of spin-momentum inter-locking in topological Kondo insulator SmB6 nanowires

Nanoscale ◽  
2021 ◽  
Author(s):  
Yugui Cui ◽  
Yi Chu ◽  
Zhencun Pan ◽  
Ying-Jie Xing ◽  
Shaoyun Huang ◽  
...  
Keyword(s):  
Critical Temperature ◽  
Anisotropic Magnetoresistance ◽  
Kondo Insulator ◽  
Spin Momentum

SmB6, which opens up an insulating bulk gap due to the hybridization between itinerant d-electrons and localized f-electrons below a critical temperature, turns out to be a topological Kondo insulator...

scholarly journals Magnetic and defect probes of the SmB6 surface state

2018 ◽  
Vol 4 (11) ◽  
pp. eaau4886 ◽  
Author(s):  
Lin Jiao ◽  
Sahana Rößler ◽  
Deepa Kasinathan ◽  
Priscila F. S. Rosa ◽  
Chunyu Guo ◽  
...  
Keyword(s):  
Surface States ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Magnetic Impurities ◽  
Fundamental Physics ◽  
Length Scales ◽  
Kondo Insulator ◽  
Theoretical Predictions ◽  
The Impact

The impact of nonmagnetic and magnetic impurities on topological insulators is a central focus concerning their fundamental physics and possible spintronics and quantum computing applications. Combining scanning tunneling spectroscopy with transport measurements, we investigate, both locally and globally, the effect of nonmagnetic and magnetic substituents in SmB6, a predicted topological Kondo insulator. Around the so-introduced substitutents and in accord with theoretical predictions, the surface states are locally suppressed with different length scales depending on the substituent’s magnetic properties. For sufficiently high substituent concentrations, these states are globally destroyed. Similarly, using a magnetic tip in tunneling spectroscopy also resulted in largely suppressed surface states. Hence, a destruction of the surface states is always observed close to atoms with substantial magnetic moment. This points to the topological nature of the surface states in SmB6 and illustrates how magnetic impurities destroy the surface states from microscopic to macroscopic length scales.

Positron Lifetime Studies in the Kondo Insulator, FeSi

1997 ◽  
Vol 255-257 ◽  
pp. 512-514
Author(s):  
A. Bharathi ◽  
Y. Hariharan ◽  
A. Mani ◽  
C.S. Sundar
Keyword(s):  
Positron Lifetime ◽  
Kondo Insulator ◽  
Lifetime Studies

Antiferromagnetic ordering in the doped Kondo insulator CeRhSb

1997 ◽  
Vol 55 (21) ◽  
pp. 14100-14102 ◽  
Author(s):  
Latika Menon ◽  
S. K. Malik
Keyword(s):  
Kondo Insulator ◽  
Antiferromagnetic Ordering

scholarly journals Griffiths phase of the Kondo insulator fixed point

2001 ◽  
Vol 226-230 ◽  
pp. 110-114 ◽  
Author(s):  
E. Miranda ◽  
V. Dobrosavljević
Keyword(s):  
Fixed Point ◽  
Griffiths Phase ◽  
Kondo Insulator
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