scholarly journals Nonlinear and time-resolved optical study of the 112-type iron-based superconductor parentCa1−xLaxFeAs2across its structural phase transition

2016 ◽  
Vol 93 (10) ◽  
Author(s):  
J. W. Harter ◽  
H. Chu ◽  
S. Jiang ◽  
N. Ni ◽  
D. Hsieh
2020 ◽  
Vol 2 (10) ◽  
pp. 4390-4394 ◽  
Author(s):  
Jun Yi ◽  
Xueying Ge ◽  
Exian Liu ◽  
Tong Cai ◽  
Chujun Zhao ◽  
...  

We report a correlation between the structural phase transition of CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) and their temperature dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL).


1980 ◽  
Vol 41 (17) ◽  
pp. 423-425 ◽  
Author(s):  
M. Regis ◽  
M. Candille ◽  
P. St-Gregoire

2013 ◽  
Vol 27 (20) ◽  
pp. 1330014 ◽  
Author(s):  
WEI-CHENG LEE ◽  
WEICHENG LV ◽  
HAMOOD Z. ARHAM

One central issue under intense debate in the study of the iron-based superconductors is the origin of the structural phase transition that changes the crystal lattice symmetry from tetragonal to orthorhombic. This structural phase transition, occurring universally in almost every family of the iron-based superconductors, breaks the lattice C4 rotational symmetry and results in an anisotropy in a number of physical properties. Due to the unique topology of the Fermi surface, both orbital- and spin-based scenarios have been proposed as the driving force. In this review, we focus on theories from the orbital-based scenario and discuss several related experiments. It is pointed out that although both scenarios lead to the same macroscopic phases and are not distinguishable in bulk measurements of the thermodynamic properties, the elementary excitations could be fundamentally different, and provide us with the possibility to resolve this long-standing debate between orbital- and spin-based theories.


2013 ◽  
Vol 1528 ◽  
Author(s):  
Kazutaka G. Nakamura ◽  
Jianbo Hu ◽  
Kouhei Ichiyanagi ◽  
Nobuaki Kawai ◽  
Shin-ichi Adachi

ABSTRACTDynamics of structural phase transition in polycrystalline samples (tetragonal stabilized zirconia and bismuth) under laser-shock compression has been studied using nanosecond time-resolved X-ray diffraction technique based on synchrotron radiation. Tetragonal zirconia shows the structural phase transition to the monoclinic phase within 20 ns during shock compression without any intermediate and reverts back to the tetragonal phase during pressure release. Bismuth shows more complex phase transition dynamics. The Bi-I phase, which is the stable phase at ambient pressure and temperature, transfers to Bi-V phase within 4 ns under shock compression and gradually reverts back following the path of Bi-V →Bi-III → Bi-II → Bi-I within 30 ns during pressure release.


2020 ◽  
Vol 12 (22) ◽  
pp. 25143-25149 ◽  
Author(s):  
Dian Li ◽  
Xiong Wang ◽  
Chi-ming Kan ◽  
Daliang He ◽  
Zejun Li ◽  
...  

2015 ◽  
Vol 57 (11) ◽  
pp. 2286-2289 ◽  
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin

Sign in / Sign up

Export Citation Format

Share Document