Cheng Ma

Sep 23, 2024 | nature.com | Cheng Ma

Although all-solid-state Li batteries offer a safe, energy-dense alternative to commercial Li-ion batteries, their development is impeded by the sluggish Li-ion transport within solid electrolytes. Now, anion configuration regulation has been shown to promote Li-ion migration, offering a new approach for designing highly Li-ion-conductive solid electrolytes.

Sep 11, 2024 | link.aps.org | Cheng Ma |Kui-Juan Jin |Er-Jia Guo

Electric-field control of magnetization is crucial for next-generation spintronic devices with reduced energy consumption and increased integration density. Based on magnetoelectric multiferroics whose Dzyaloshinskii-Moriya interaction (DMI) vectors are coupled to their polarization, we propose the architecture of a DMI transistor which utilizes voltage-controlled DMI torque to reverse the magnetization orientation, enabling current-free magnetization reversal.

Aug 6, 2024 | link.aps.org | Cheng Ma |Min Chen |Yu Xie |Qiang Xu

Finite-temperature orbital-free density functional theory (FT-OFDFT) holds significant promise for simulating warm dense matter due to its favorable scaling with both system size and temperature. However, the lack of the numerically accurate and transferable noninteracting free-energy functionals results in a limit on the application of FT-OFDFT for warm dense matter simulations. Here, a nonlocal free-energy functional, named XWMF, was derived by line integrals for FT-OFDFT simulations.

Oct 25, 2023 | onlinelibrary.wiley.com | Zhen Yang |Kui-Juan Jin |Yulin Gan |Cheng Ma

Kui-juan Jin Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China University of Chinese Academy of Science, Beijing, 100049 China Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808 ChinaSearch for more papers by this author

Oct 5, 2023 | link.aps.org | Cheng Ma |Kuijuan Jin |Chen Ge

Dzyaloshinskii-Moriya interaction (DMI) is of particular interest as it plays a primary role in stabilizing topological chiral magnetism such as skyrmions and has been intensively studied due to its potential applications for next-generation information storage technologies. For two-dimensional (2D) magnets, although Janus structure offers a paradigm to realize strong DMI, further studies are confined by the strict fabrication and the necessity of heavy atoms.