scholarly journals Interaction effects on topological phase transitions via numerically exact quantum Monte Carlo calculations

2014 ◽  
Vol 89 (23) ◽  
Author(s):  
Hsiang-Hsuan Hung ◽  
Victor Chua ◽  
Lei Wang ◽  
Gregory A. Fiete
Keyword(s):  
Monte Carlo ◽  
Phase Transitions ◽  
Quantum Monte Carlo ◽  
Interaction Effects ◽  
Topological Phase ◽  
Monte Carlo Calculations ◽  
Exact Quantum ◽  
Topological Phase Transitions

Quantum Monte Carlo calculations ofA=9,10nuclei

2002 ◽  
Vol 66 (4) ◽  
Author(s):  
Steven C. Pieper ◽  
K. Varga ◽  
R. B. Wiringa
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Monte Carlo Calculations

scholarly journals Creating polar antivortex in PbTiO3/SrTiO3 superlattice

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Adeel Y. Abid ◽  
Yuanwei Sun ◽  
Xu Hou ◽  
Congbing Tan ◽  
Xiangli Zhong ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Phase Field ◽  
Driving Force ◽  
Topological Phase ◽  
Phase Field Simulation ◽  
Topological Structures ◽  
Field Simulation ◽  
Condensed Matters ◽  
Topological Phase Transitions ◽  
Insight Into

AbstractNontrivial topological structures offer a rich playground in condensed matters and promise alternative device configurations for post-Moore electronics. While recently a number of polar topologies have been discovered in confined ferroelectric PbTiO3 within artificially engineered PbTiO3/SrTiO3 superlattices, little attention was paid to possible topological polar structures in SrTiO3. Here we successfully create previously unrealized polar antivortices within the SrTiO3 of PbTiO3/SrTiO3 superlattices, accomplished by carefully engineering their thicknesses guided by phase-field simulation. Field- and thermal-induced Kosterlitz–Thouless-like topological phase transitions have also been demonstrated, and it was discovered that the driving force for antivortex formation is electrostatic instead of elastic. This work completes an important missing link in polar topologies, expands the reaches of topological structures, and offers insight into searching and manipulating polar textures.

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