scholarly journals Investigating the Nature of Insulator-Metal Transition in Neutron-Transmutation-Doped Ge:Ga

2018 ◽  
Author(s):  
Samy Abd-elhakim Elsayed
Keyword(s):  
Insulator Metal Transition ◽  
Neutron Transmutation

ON INSULATOR-METAL TRANSITION IN Fe3 O4

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-1112-C1-1114
Author(s):  
B. K. CHAKRAVERTY
Keyword(s):  
Insulator Metal Transition

scholarly journals Dynamic Manipulation of THz Waves Enabled by Phase-Transition VO2 Thin Film

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 114
Author(s):  
Chang Lu ◽  
Qingjian Lu ◽  
Min Gao ◽  
Yuan Lin
Keyword(s):  
Optical Methods ◽  
Stimuli Responsive ◽  
Device Structure ◽  
Current State ◽  
Insulator Metal Transition ◽  
Potential Applications ◽  
Fs Laser ◽  
External Stimuli ◽  
Thz Applications ◽  
Thz Waves

The reversible and multi-stimuli responsive insulator-metal transition of VO2, which enables dynamic modulation over the terahertz (THz) regime, has attracted plenty of attention for its potential applications in versatile active THz devices. Moreover, the investigation into the growth mechanism of VO2 films has led to improved film processing, more capable modulation and enhanced device compatibility into diverse THz applications. THz devices with VO2 as the key components exhibit remarkable response to external stimuli, which is not only applicable in THz modulators but also in rewritable optical memories by virtue of the intrinsic hysteresis behaviour of VO2. Depending on the predesigned device structure, the insulator-metal transition (IMT) of VO2 component can be controlled through thermal, electrical or optical methods. Recent research has paid special attention to the ultrafast modulation phenomenon observed in the photoinduced IMT, enabled by an intense femtosecond laser (fs laser) which supports “quasi-simultaneous” IMT within 1 ps. This progress report reviews the current state of the field, focusing on the material nature that gives rise to the modulation-allowed IMT for THz applications. An overview is presented of numerous IMT stimuli approaches with special emphasis on the underlying physical mechanisms. Subsequently, active manipulation of THz waves through pure VO2 film and VO2 hybrid metamaterials is surveyed, highlighting that VO2 can provide active modulation for a wide variety of applications. Finally, the common characteristics and future development directions of VO2-based tuneable THz devices are discussed.

Neutron transmutation doping of silicon by magnesium

1993 ◽  
Vol 88 (5) ◽  
pp. 369-371 ◽  
Author(s):  
N.A. Sobolev ◽  
E.I. Shek ◽  
E.P. Shabalin
Keyword(s):  
Neutron Transmutation Doping ◽  
Transmutation Doping ◽  
Neutron Transmutation

Description of the pressure-induced insulator-metal transition in BaCoS2 within the LDA + DMFT approach

2012 ◽  
Vol 54 (9) ◽  
pp. 1864-1869 ◽  
Author(s):  
V. M. Zainullina ◽  
N. A. Skorikov ◽  
M. A. Korotin
Keyword(s):  
Insulator Metal Transition
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