Jiazhen Wu 교수

Heterostructures having both magnetism and topology are promising materials for the realization of exotic topological quantum states while challenging in synthesis and engineering. Here, we report natural magnetic van der Waals heterostructures of (MnBi₂Te₄) <i>_m</i> (Bi₂Te₃) <i>_n</i> that exhibit controllable magnetic properties while maintaining their topological surface states. The interlayer antiferromagnetic exchange coupling

Electrides loaded with transition-metal (TM) nanoparticles have recently attracted attention as emerging materials for catalytic NH₃ synthesis. However, they suffer from disadvantages associated with the growth and aggregation of nanoparticles. TM-containing intermetallic electrides appear to be promising catalysts with the advantages of both electrides and transition metals in a single phase. LaRuSi is reported here to be an intermetallic electride with superior activity for NH<sub>3

Electrides-compounds in which electrons localized in interstitial spaces periodically serve as anions-have attracted broad attention for their exotic properties, such as extraordinary electron-donating ability. In our efforts to expand this small family of phases, LaScSi emerges as a promising candidate. Its electron count is 2e^- f.u.^-1 in excess of that expected from the Zintl concept, while its structure offers interstitial spaces that can accommodate these extra electron

Our data indicate that DHM and Sal B are effective in modulating α-synuclein accumulation and aggregate formation and augmenting activation of CMA, holding potential for the treatment of Parkinson's disease.

2D magnets and their engineered magnetic heterostructures are intriguing materials for both fundamental physics and application prospects. On the basis of the recently discovered intrinsic magnetic topological insulators (MnBi₂ Te₄ )(Bi₂ Te₃ )_n , here, a new type of magnet, in which the magnetic layers are separated by a large number of non-magnetic layers and become magnetically independent, is proposed. This magnet is named as a single-lay

Abstract Electrides loaded with transition‐metal (TM) nanoparticles have recently attracted attention as emerging materials for catalytic NH 3 synthesis. However, they suffer from disadvantages associated with the growth and aggregation of nanoparticles. TM‐containing intermetallic electrides appear to be promising catalysts with the advantages of both electrides and transition metals in a single phase. LaRuSi is reported here to be an intermetallic electride with superior activity for NH 3 synt

Electrides are emerging catalyst materials, in which excess electrons serve as periodic anions. Although they have been successfully used for various hydrogenation reactions, due to weak chemical stabilities, their applications in aqueous systems remain challenging. Herein, we develop a quasi-two-dimensional (2D) intermetallic electride CeRuSi as a high-performance alkaline hydrogen evolution electrocatalyst, realizing an ultralow overpotential of 28 mV at a current density of 10 mA/cm2 and long

We describe a concise and effective strategy towards precisely mapping Na(+)-K(+) ATPases on the cytoplasmic side of cell membranes by direct stochastic optical reconstruction microscopy (dSTORM). We found that most Na(+)-K(+) ATPases are localized in different sizes of clusters on human red blood cell (hRBC) membranes, revealed by Ripley's K-function analysis. Further evidence that cholesterol depletion causes the dispersion of Na(+)-K(+) ATPase clusters indicates that such clusters could be lo

The pir gene of plasmid R6K encodes the protein, pi, a replication and transcription factor. Two translational options for the pir gene give rise to two forms of pi protein: a 35.0-kDa form (pi35.0) and a shortened 30.5-kDa form (pi30.5). Although both proteins bind to a series of 22-bp direct repeats essential for plasmid R6K replication, only pi35.0 can bind to a site in the (A.T)-rich segment of its gamma ori and activate the gamma ori in vivo and in vitro. However, unlike pi35.0, pi30.5can i

Topological materials have received much attention because of their robust topological surface states, which can be potentially applied in electronics and catalysis. Here, we show that the topological insulator bismuth selenide functions as an efficient catalyst for the oxidative carbonylation of amines with carbon monoxide and dioxygen to synthesize urea derivatives. For example, the carbonylation of butylamine can be completed over bismuth selenide nanoparticle catalyst in 4 hours at 20°C with

The intrinsic magnetic topological materials Mn(Sb/Bi)_2<i>n</i>+2Te_3<i>n</i>+4 have attracted extensive attention due to their topological quantum properties. Although, the Mn-Sb/Bi antisite defects have been frequently reported to exert significant influences on both magnetism and band topology, their formation mechanism and the methods to manipulate their distribution and concentration remain elusive. Here, we present MnSb₂Te₄ as a typical example an

We report that anomalous low-energy excitation (ALE) peaks in the heat capacity emerging from single-crystal cage materials can be successfully rationalized in terms of a single unified exponential line for a variety of type-I clathrates by employing a parameter associated with the freedom of space and the modified radii of guest atoms estimated by band calculations. The origin of these low-energy excitations is interpreted in the framework of quasiharmonic van der Waals type guest-host interact

A systematic study on the anharmonicity of phonons is made for single-crystal type-I clathrates: n-type ${\text{Ba}}_{8}$${\text{Ga}}_{16}$${\text{Ge}}_{30}$ (n-BGG), p-type ${\text{Ba}}_{8}$${\text{Ga}}_{16}$${\text{Ge}}_{30}$ (p-BGG), n-type ${\text{Sr}}_{8}$${\text{Ga}}_{16}$${\text{Ge}}_{30}$ (n-SGG), n-type ${\text{K}}_{8}$${\text{Ga}}_{16}$${\text{Sn}}_{30}$ (n-KGSn), and n-type ${\text{Ba}}_{8}$${\text{Ga}}_{16}$${\text{Sn}}_{30}$ (n-BGSn), based on their heat capacity ${C}_{p}$ at low te

We describe the synthesis of the new ternary compound CaRuSi whose chemical and physical properties help draw a clear picture of how electronic structure controls the behavior of an isostructural series of intermetallics. DFT calculations reveal that an electronic pseudogap arises near the Fermi level ( E_F), corresponding to 14 valence electrons per RuSi unit. The closed-shell-like character is further investigated by comparisons with the electronic structures of CaCoSi (15 electrons)