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Showing 2017 · cond-mat.mtrl-sciShow all

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cond-mat.mtrl-sci2017

Unusual negative formation enthalpies and atomic ordering in isovalent alloys of transition metal dichalcogenide monolayers

Ji-Hui Yang, Boris I. Yakobson

Common substitutional isovalent semiconductor alloys usually form disordered metastable phases with positive excess formation enthalpies (ΔH). In contrast, monolayer alloys of tran…

cond-mat.mtrl-sci2017★ 5 cited

Unusual thickness dependence of exciton characteristics in 2D perovskite quantum wells

J. -C. Blancon, A. V. Stier, H. Tsai +12

Understanding the nature and energy distribution of optical resonances is of central importance in low-dimensional materials and its knowledge is critical for designing eff…

cond-mat.mtrl-sci2017★ 32 cited

Two-dimensional Massless Dirac Fermions in Antiferromagnetic AFe2As2 (A = Ba, Sr)

Zhi-Guo Chen, Luyang Wang, Yu Song +7

We report infrared studies of AFeAs (A = Ba, Sr), two representative parent compounds of iron-arsenide superconductors, at magnetic fields (B) up to 17.5 T. Optical tra…

cond-mat.mtrl-sci2017★ 1k cited

Design of Lead-Free Inorganic Halide Perovskites for Solar Cells via Cation-Transmutation

Xin-Gang Zhao, Ji-Hui Yang, Yuhao Fu +5

Hybrid organic-inorganic halide perovskites with the prototype material of CHNHPbI have recently attracted intense interest as low-cost and high-performance photo…

cond-mat.mtrl-sci2017

Janus Monolayer Transition Metal Dichalcogenides

Jing Zhang, Shuai Jia, Kholmanov Iskandar +8

A novel crystal configuration of sandwiched S-Mo-Se structure (Janus SMoSe) at the monolayer limit has been synthesized and carefully characterized in this work. By controlled sulf…