Entropy changes in crystalline material under phase transition and symmetry breaking

Author(s):  
Dhiraj Sinha ◽  
Roland Bouffanais
2019 ◽  
Vol 28 (09) ◽  
pp. 1950113 ◽  
Author(s):  
Bin Liang ◽  
Shao-Wen Wei ◽  
Yu-Xiao Liu

Using the quasinormal modes of a massless scalar perturbation, we investigate the small/large black hole phase transition in the Lorentz symmetry breaking massive gravity. We mainly focus on two issues: (i) the sign change of slope of the quasinormal mode frequencies in the complex-[Formula: see text] diagram; (ii) the behaviors of the imaginary part of the quasinormal mode frequencies along the isobaric or isothermal processes. For the first issue, our result shows that, at low fixed temperature or pressure, the phase transition can be probed by the sign change of slope. While increasing the temperature or pressure to certain values near the critical point, there will appear the deflection point, which indicates that such method may not be appropriate to test the phase transition. In particular, the behavior of the quasinormal mode frequencies for the small and large black holes tend to be the same at the critical point. For the second issue, it is shown that the nonmonotonic behavior is observed only when the small/large black hole phase transition occurs. Therefore, this property can provide us with an additional method to probe the phase transition through the quasinormal modes.


2019 ◽  
Vol 3 (10) ◽  
pp. 2077-2082 ◽  
Author(s):  
Yu-Wei Zhang ◽  
Qing Wang ◽  
Ping-Ping Shi ◽  
Wan-Ying Zhang ◽  
Qiong Ye ◽  
...  

Phase transition materials are a class of smart materials with special optoelectronic properties.


Nanophotonics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 495-504 ◽  
Author(s):  
Qiang Bai

AbstractWe theoretically and numerically demonstrate that the spontaneous parity-time (PT) symmetry breaking phase transition can be realized respectively by using two independent tuning ways in a tri-layered metamaterial that consists of periodic array of metal-semiconductor Schottky junctions. The existence conditions of PT symmetry and its phase transition are obtained by using a theoretical model based on the coupled mode theory. A hot-electron photodetection based on the same tri-layered metamaterial is proposed, which can directly show the spontaneous PT symmetry breaking phase transition in photocurrent and possesses dynamical tunability and switchability. This work extends the concept of PT symmetry into the hot-electron photodetection, enriches the functionality of the metamaterial and the hot-electron device, and has varieties of potential and important applications in optoelectronics, photodetection, photovoltaics, and photocatalytics.


2006 ◽  
Vol 96 (15) ◽  
Author(s):  
Kihwan Kim ◽  
Myoung-Sun Heo ◽  
Ki-Hwan Lee ◽  
Kiyoub Jang ◽  
Heung-Ryoul Noh ◽  
...  

1999 ◽  
Vol 60 (6) ◽  
pp. R6271-R6274 ◽  
Author(s):  
Damien Challet ◽  
Matteo Marsili

1999 ◽  
Vol 438 (1-3) ◽  
pp. 97-101 ◽  
Author(s):  
G. Le Lay ◽  
J.M. Layet ◽  
A. Cricenti ◽  
C. Ottaviani ◽  
P. Perfetti

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