Article
Chemistry, Multidisciplinary
Tony Stueker, Xiya Xia, Helmut Beckers, Sebastian Riedel
Summary: Pseudo-tetrahedral nitrido trifluorides equivalent to MF3 (M=Fe, Ru, Os) and square pyramidal nitrido tetrafluorides equivalent to MF4 (M=Ru, Os) were formed by reactions of free metal atoms with NF3 and isolated in solid neon at 5 K. Their IR spectra were analyzed with quantum-chemical calculations, revealing a high-spin (3)A(2) ground state for FeF3.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Physics, Applied
Yulin Feng, Zilong Wang, Xi Zuo, Guoying Gao
Summary: In this study, the electronic structure, magnetism, and spin transport properties of VSi2X4 (X = N, P, As) monolayers were systematically studied using density functional theory. The results showed that VSi2X4 monolayers exhibit ferromagnetic type-II spin gapless semiconductor (SGS) and bipolar magnetic semiconductor (BMS) properties, and interesting electronic phase transitions can be achieved by applying biaxial strain. Additionally, the VSi2P4 monolayer demonstrated bias-dependent spin filtering effect and temperature-driven spin Seebeck effect.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Cristina Mier, Deung-Jang Choi, Nicolas Lorente
Summary: Magnetic impurities on superconductors create in-gap states and recent experiments explore their topological properties in one-dimensional arrays. By developing efficient methods for computing topological invariants of infinite chains in s-wave superconductors, researchers show the possibility of converging to the infinite limit through finite-size numerical calculations, paving the way for numerical calculations not based on analytical Green's functions.
Review
Engineering, Electrical & Electronic
Nhat-Khuong Nguyen, Thanh Nguyen, Tuan-Khoa Nguyen, Sharda Yadav, Toan Dinh, Mostafa Kamal Masud, Pradip Singha, Thanh Nho Do, Matthew J. Barton, Hang Thu Ta, Navid Kashaninejad, Chin Hong Ooi, Nam-Trung Nguyen, Hoang-Phuong Phan
Summary: Wearable and implantable bioelectronics have made remarkable progress, but organic materials have limitations. Wide-band-gap materials are emerging as promising candidates for flexible electronics due to their excellent electrical and mechanical properties.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Oleg Chugai, Oleksii Poluboiarov, Sergey Oleynick, Sergei Sulima, Oleksii Voloshin, Roman Zaitsev, Mykhailo Kirichenko
Summary: In this study, the SPDS method was utilized to investigate the energy spectrum of charge carriers' localized states in Cd1-xZnxTe crystals grown from the melt. By introducing additional photoexcitation, the energy spectrum of localized states broadens, and a new parameter related to the occupation of localized states was introduced to explain determinate variations.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Jianqiao Liu, Xu-Ping Yao, Gang Chen
Summary: This article explores the effects of stacking control on the properties of van der Waals materials, specifically multilayer lattice antiferromagnets. The study reveals the existence of a spiral spin liquid state and establishes a phase diagram. It is also shown that the spiral spin liquid behavior persists even with perturbations.
Article
Nanoscience & Nanotechnology
Samreen Khan, Frank Angeles, John Wright, Saurabh Vishwakarma, Victor H. Ortiz, Erick Guzman, Fariborz Kargar, Alexander A. Balandin, David J. Smith, Debdeep Jena, H. Grace Xing, Richard Wilson
Summary: The study aims to investigate the impact of bulk vibrational properties and interfacial structure on thermal transport at interfaces in wide band gap semiconductor systems. The results suggest that thermal conductance depends on the bulk phonon properties of the softer material and the interfacial structure, rather than just the vibrational similarity between the two materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Shaohua Ma, Weidong Zhu, Tianjiao Han, Chunfu Zhang, Peng Gao, Yonggang Guo, Zhicheng Song, Yufeng Ni, Dayong Qiao
Summary: By using the combined strategies of the Pb(SCN)(2) additive and air annealing, high-quality Cs(0.22)FA(0.78)Pb(I0.85Br0.15)(3) perovskite films with a wide bandgap (1.65-1.80 eV) and favored properties were successfully synthesized. With the desired films, the average efficiencies of semitransparent perovskite solar cells were significantly improved from 18.13% to 20.35%. Furthermore, a milestone efficiency of 30.32% was achieved in a four-terminal perovskite/TOPCon tandem solar cell using the semitransparent perovskite cell due to its excellent performance and preferred optical properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
S. J. Carreira, D. Sanchez-Manzano, M. -W. Yoo, K. Seurre, V. Rouco, A. Sander, J. Santamaria, A. Anane, J. E. Villegas
Summary: In this study, spin-pumping effects in bilayers of a soft metallic ferromagnet and high-temperature superconductor YBCO were investigated using wideband ferromagnetic resonance. The Gilbert damping in the ferromagnet dropped drastically across the normal-superconducting transition, with different behaviors observed depending on the interface morphology. The unique behavior was attributed to the quasiparticle density of states at the YBCO surface and the zero-gap nodes in the momentum space.
Article
Physics, Multidisciplinary
I Grzegory
Summary: UNIPRESS is a research center that originated from the Laboratory of Pressure Studies of Semiconductors of the Institute of Physics PAS in 1972. It has a strong foundation and a unique experimental base established through excellent cooperation both domestically and internationally, which has led to remarkable achievements. The main research areas of UNIPRESS include pressure studies of narrow gap semiconductors, impurity/dopant character and recombination mechanisms under pressure, high pressure thermodynamics and crystal growth of GaN, GaN-based quantum structures and devices, and generation of THz radiation in semiconductors. The article also highlights the significance of UNIPRESS's new research directions, such as high pressure synthesis of h-BN, semiconductor-superconductor (GaN-NbN) heterostructures emitting entangled photons, integrated photonic circuits, and THz amplification in semiconductor plasmonic structures.
ACTA PHYSICA POLONICA A
(2022)
Article
Materials Science, Multidisciplinary
Shalima Shawuti
Summary: The research aimed to compare oxide semiconductors as electrolyte materials for intermediate temperature solid oxide fuel cells. Among them, CoGa2O4 exhibited the highest ionic conductivity values in a specific grain size range.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
S. V. Andreev
Summary: In this study, the pairing of excitons and polaritons in two-dimensional semiconductors under effective spin-orbit coupling is discussed, with predictions made about quantum bosonic halos and biexcitonic Mott supercurrent. The interaction between the spin-orbital coupling and the continuum in the open channel is shown to induce d-wave-like dressing of the nominally s-wave bound state.
Article
Physics, Applied
Atsushi Hiraiwa, Satoshi Okubo, Masahiko Ogura, Yu Fu, Hiroshi Kawarada
Summary: This study successfully developed a method to analyze the characteristics of diamond devices and validated the accuracy of this method through the analysis of an actual MIS capacitor. The results showed the presence of unique characteristics specific to deep dopants in diamond devices, and suggested the possible existence of a surficial diamond layer with reduced activation energy, which will guide the development of diamond-based devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Feng Wu, Shuyuan Xiao
Summary: Researchers achieved high-efficiency absorption of graphene using Tamm plasmon polaritons (TPPs) in conventional heterostructures. According to the Bragg scattering theory, photonic bandgaps (PBGs) in all-dielectric 1-D photonic crystals (PhCs) strongly shift towards shorter wavelengths with increasing incident angle. The strongly blueshift property of TPPs in conventional heterostructures limits the operating angle range of graphene absorption. By utilizing a heterostructure composed of a metal layer, a dielectric spacer layer, and a 1-D PhC containing hyperbolic metamaterial layers, an angle-insensitive TPP was realized, enabling wide-angle high-efficiency absorption of graphene.
Article
Physics, Multidisciplinary
I. N. Yakovkin, N. Petrova
Summary: The study reveals that spin-orbit coupling significantly affects the band structures of heavy IV-VI semiconductors, potentially leading to band inversion for topological insulator formation. However, the absence of surface states providing metallicity in thin films raises doubts about the formation of topological crystalline insulators in IV-VI compounds.
