Magnetoresistance Study of Bi and Bi–Sb Alloys in High Magnetic Fields. II. Landau Levels and Semimetal-Semiconductor Transition

1983 ◽  
Vol 52 (6) ◽  
pp. 2118-2127 ◽  
Author(s):  
Kenji Hiruma ◽  
Noboru Miura
1991 ◽  
Vol 05 (01n02) ◽  
pp. 353-363 ◽  
Author(s):  
Zlatko Tešanović

An external magnetic field can actually enhance superconductivity, pro vided it is strong enough. If only few lowest Landau levels are occupied, the quasi 1D nature of the electronic motion leads to an enhancement of transition temperature. The orbital frustration of the order parameter is much simplified in this limit. This limit of superconductivity, of great interest in itself, can also be used as a starting point to study orbital frustration in familiar, “low-field”, strongly type II superconductors. I briefly review some of the characteristics of superconductivity in high magnetic fields.


2004 ◽  
Vol 18 (27n29) ◽  
pp. 3775-3780
Author(s):  
Y. D. JHO ◽  
X. WANG ◽  
G. D. SANDERS ◽  
D. H. REITZE ◽  
C. J. STANTON ◽  
...  

We report results on measurements of magneto-photoluminescence at 4.2 K in In x Ga 1-x As multiple quantum wells in high magnetic fields (25 Tesla) and laser intensities (25 GW/cm 2) using 150 fs pulses. Novel magneto-plasma phenomena are observed, including strikingly narrow emission lines of Landau levels above a threshold intensity and the suppression of exciton-mixing-induced anti-crossings.


1984 ◽  
Vol 45 (C1) ◽  
pp. C1-67-C1-70 ◽  
Author(s):  
F. Sultanem ◽  
C. A. Bleijs ◽  
C. Postel ◽  
S. Askenazy ◽  
J. Marquez

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