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Design of antiferroelectric polarization configuration for ultrahigh capacitive energy storage via increasing entropy.
Nat Commun
January 2025
Beijing Advanced Innovation Center for Materials Genome Engineering, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, China.
Electric field induced antiferroelectric-ferroelectric phase transition is a double-edged sword for energy storage properties, which not only offers a congenital superiority with substantial energy storage density but also poses significant challenges such as large polarization hysteresis and poor efficiency, deteriorating the operation and service life of capacitors. Here, entropy increase effect is utilized to simultaneously break the long-range antiferroelectric order and locally adjust the fourfold commensurate modulated polarization configuration, leading to a breakthrough in the trade-off between recoverable energy storge density (14.8 J cm) and efficiency (90.
View Article and Find Full Text PDFExcellent Energy Storage and Charge-Discharge Performance in (PbCa)(ZrSn)O Antiferroelectric Ceramics.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, School of Electromechanical Engineering and School of Integrated Circuits, Guangdong University of Technology, Guangzhou 510006, China.
Lead-based antiferroelectric (AFE) ceramics have the advantages of high power density, fast charge and discharge speed, and the electric-field-induced AFE-FE phase transition, making them one of the potential dielectric energy storage materials. However, the energy storage density still needs to be improved. In this work, (PbCa) (ZrSn)O (PCZS, = 0.
View Article and Find Full Text PDFCharge-Density-Wave Control by Adatom Manipulation and Its Effect on Magnetic Nanostructures.
Nano Lett
January 2025
Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany.
Charge-density waves (CDWs) are correlated states of matter, in which the electronic density is modulated periodically due to electronic and phononic interactions. Often, CDW phases coexist with other correlated states, such as superconductivity, spin-density waves, or Mott insulators. Controlling CDW phases may, therefore, enable the manipulation of the energy landscape of these interacting states.
View Article and Find Full Text PDFDynamical localization in nonideal kicked rotors driven by two competing pulsatile modulations.
Phys Rev E
November 2024
Departamento de Química, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
We study dynamical localization in an ultracold atom confined in an optical lattice that is simultaneously shaken by two competing pulsatile modulations with different amplitudes, periods, and waveforms. The effects of finite-width time pulses, modulation waveforms, and commensurable and incommensurable driving periods are investigated. We describe a particularly complex scenario and conclude that dynamical localization can survive, or even increase, when a periodic modulation is replaced by a quasiperiodic one of equal amplitude.
View Article and Find Full Text PDFFluctuating charge-density-wave correlations in the three-band Hubbard model.
Proc Natl Acad Sci U S A
December 2024
Department of Physics and Astronomy, The University of Tennessee, Knoxville, TN 37996.
Article Synopsis
- High-temperature superconducting cuprates exhibit unique patterns of spin and charge orders that interact with superconductivity in complex ways.
- Research using advanced quantum Monte Carlo simulations reveals that these patterns change differently depending on the material and temperature, particularly with varying charge transfer energy and doping levels.
- The study concludes that charge modulations become less correlated with spin modulations as doping increases, aligning with experimental results, and suggests that high-temperature charge correlations differ from low-temperature stripe orders.
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