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Phosphorene, an elemental 2D material, which is the monolayer of black phosphorus, has been mechanically exfoliated recently. In its bulk form, black phosphorus shows high carrier mobility (~10000 cm2/Vs) and a ~0.3 eV direct bandgap.…

Mesoscale and Nanoscale Physics · Physics 2014-10-30 Yexin Deng , Zhe Luo , Nathan J. Conrad , Han Liu , Yongji Gong , Sina Najmaei , Pulickel M. Ajayan , Jun Lou , Xianfan Xu , Peide D. Ye

We have extended the range of the high-pressure optical spectroscopy to the far-infrared region keeping the accuracy of ambient-pressure experiments. The newly-developed method offers a powerful tool for the study of pressure-induced phase…

Strongly Correlated Electrons · Physics 2014-01-15 I. Kezsmarki , R. Gaal , C. C. Homes , B. Sipos , H. Berger , S. Bordacs , G. Mihaly , L. Forro

Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by the high-throughput first-principles calculation from an inorganic materials…

In order to increase the accelerating gradient of Superconducting Radio Frequency (SRF) cavities, Magnesium Diboride (MgB2) opens up hope because of its high transition temperature and potential for low surface resistance in the high RF…

Superconductivity · Physics 2015-06-04 Tamin Tai , Behnood G. Ghamsari , Steven M. Anlage , C. G. Zhuang , X. X. Xi

In the context of two-dimensional metal-free photocatalyst, we investigate the electronic, optical and excitonic properties of phosphorene derivatives within first-principles approach. While two-dimensional phosphorene does not catalyze the…

Materials Science · Physics 2018-06-26 Srilatha Arra , K. R. Ramaya , Rohit Babar , Mukul Kabir

Fast-ion conductors such as BaSnF4 are of significant interest for next-generation solid-state battery technologies due to their high ionic conductivity and chemical stability. However, the behaviour of these materials under extreme…

Density functional theory calculations have been used to identify stable layered Li-$M$-B crystal structure phases derived from a recently proposed binary metal-sandwich (MS) lithium monoboride superconductor. We show that the MS lithium…

Superconductivity · Physics 2009-11-13 Aleksey N. Kolmogorov , Matteo Calandra , Stefano Curtarolo

In this paper, we report on a multicore fiber-based (MCF) temperature sensor that operates in a wide thermal range and that is robustly packaged to withstand harsh environments. To develop the sensor, the fundamentals concerning the effect…

Using combined experimental and computational approaches we show that at 43 GPa and 1300 K gallium phosphide adopts the super-Cmcm structure, here indicated with its Pearson notation oS24. First-principles enthalpy calculations demonstrate…

High electronic transport and reasonable chemical stability of molybdenum disulfide (MoS$_2$) make it very suitable for electrochemical applications. However, its energy storage capacity is still low compared with other nanostructures. In…

Applied Physics · Physics 2022-08-19 Marzieh Rashidi , Foad Ghasemi

We report high pressure Raman experiments of Black phosphorus up to 24 GPa. The line widths of first order Raman modes A$^1_g$, B$_{2g}$ and A$^2_g$ of the orthorhombic phase show a minimum at 1.1 GPa. Our first-principles density…

Strongly Correlated Electrons · Physics 2017-09-20 Satyendra Nath Gupta , Anjali Singh , Koushik Pal , Biswanath Chakraborti , D. V. S. Muthu , U V Waghmare , A. K. Sood

Photodetectors based on two dimensional materials have attracted growing interest. However, the sensitivity is still unsatisfactory even under high gate voltage. Here we demonstrate a MoS2 photodetector with a poly(vinylidene…

The tetragonal Mo$_5$PB$_2$ compound was recently reported to show superconductivity with a critical temperature up to 9.2 K. In search of evidence for multiple superconducting gaps in Mo$_5$PB$_2$, comprehensive measurements, including…

Superconductivity · Physics 2020-09-09 T. Shang , W. Xie , D. J. Gawryluk , R. Khasanov , J. Z. Zhao , M. Medarde , M. Shi , H. Q. Yuan , E. Pomjakushina , T. Shiroka

In the fast growing two-dimensional (2D) materials family, anisotropic 2D materials, with their intrinsic in-plane anisotropy, exhibit a great potential in optoelectronics. One such typical material is black phosphorus (BP), with a…

Mesoscale and Nanoscale Physics · Physics 2019-10-14 Chong Wang , Guowei Zhang , Shenyang Huang , Yuangang Xie , Hugen Yan

This study aimed primarily at completing and extending the characterization of the crystallographic, spectroscopic and optical properties of polar, biaxial, optically negative 2-aminopyrimidinium(1+) hydrogen phosphite. Besides the…

We present an experimental investigation of a new polymorphic 2D single layer of phosphorus on Ag(111). The atomically-resolved scanning tunneling microscopy (STM) images show a new 2D material composed of freely-floating phosphorus…

This study investigates the photocatalytic nitrogen fixation on a cation-doped surface (Bi$_{x}$M$_{y}$)$_2$MoO$_6$ where (M = Fe, La, Yb) in both the orthorhombic and monoclinic configurations using a density functional theory (DFT)…

Materials Science · Physics 2018-12-13 Alhassan S. Yasin , Botong Liu , Nianqiang Wu , Terence Musho

Two-dimensional (2D) transition metal dichalcogenides (TMDs) with tantalizing layer-dependent electronic and optical properties have emerged as a new paradigm for integrated flat opto-electronic devices. However, daunting challenges remain…

Interface of transition metal dichalcogenide (TMDC) and high-k dielectric transition metal oxides (TMO) had triggerred umpteen discourses due to the indubitable impact of TMO in reducing the contact resistances and restraining the…

The unique optoelectronic properties of black phosphorus (BP) have triggered great interest in its applications in areas not fulfilled by other layered materials (LMs). However, its poor stability (fast degradation, i.e. <<1 h for…

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