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Research on black phosphorus (BP) has been experiencing a renaissance over the last few years, after the demonstration that few-layer BP exhibits high carrier mobility and a thickness-dependent band gap. For a long time, bulk BP is also…

Materials Science · Physics 2017-05-02 Renyan Zhang , John Waters , Andre K. Geim , Irina V. Grigorieva

Heusler compounds have emerged as important thermoelectric materials due to their combination of promising electronic transport properties, mechanical robustness and chemical stability -- key aspects for practical device integration. While…

Group IV heavy elements atomic layers are expected to show an interesting physical properties due to their large spin-orbit coupling (SOC). Using density functional theory (DFT) calculations with/without SOC we investigate the variation of…

Mesoscale and Nanoscale Physics · Physics 2018-09-05 Anton Visikovskiy , Shingo Hayashi , Takashi Kajiwara , Fumio Komori , Koichiro Yaji , Satoru Tanaka

Research on graphene and other two-dimensional (2D) materials, such as silicene, germanene, phosphorene, hexagonal boron nitride (h-BN), graphitic carbon nitride (g-C3N4), graphitic zinc oxide (g-ZnO) and molybdenum disulphide (MoS2), has…

Materials Science · Physics 2016-03-03 Wei Hu , Jinlong Yang

In a recent Letter (Phys. Rev. Lett.78, 1552 (1997) ), Zaikin, Golubev, van Otterlo, and Zimanyi criticized the phenomenological time-dependent Ginzburg-Laudau model which I used to study the quantum phase-slippage rate for superconducting…

Condensed Matter · Physics 2009-10-30 Ji-Min Duan

An oversight of several previous local density approximation (LDA) results appears to have led to an incomplete picture of the actual capability of density functional theory (DFT), with emphasis on LDA, to describe and to predict the band…

Materials Science · Physics 2010-12-16 D. Bagayoko , G. L. Zhao , L. Franklin , E. C. Ekuma

The recent isolation of atomically thin black phosphorus by mechanical exfoliation of bulk layered crystals has triggered an unprecedented interest, even higher than that raised by the first works on graphene and other two-dimensional, in…

Mesoscale and Nanoscale Physics · Physics 2015-10-21 Andres Castellanos-Gomez

We investigate the thermoelectric properties of some semiconducting Chevrel phases. Band structure calculations are used to compute thermopowers and to estimate of the effects of alloying and disorder on carrier mobility. Alloying on the Mo…

Materials Science · Physics 2016-08-31 R. W. Nunes , I. I. Mazin , D. J. Singh

Phosphorene has been rediscovered recently, establishing itself as one of the most promising two dimensional group-V elemental monolayers with direct band gap, high carrier mobility, and anisotropic electronic properties. In this letter,…

Materials Science · Physics 2016-03-24 Gaoxue Wang , G. C. Loh , Ravindra Pandey , Shashi P. Karna

We propose previously unknown allotropes of phosphorus carbide (PC) in the stable shape of an atomically thin layer. Different stable geometries, which result from the competition between sp2 bonding found in graphitic C and sp3 bonding…

Materials Science · Physics 2016-05-25 Jie Guan , Dan Liu , Zhen Zhu , David Tomanek

Half-Heusler compounds have emerged as promising thermoelectric materials that offer huge compositional space to tune their thermoelectric performance. A class of stable half Heusler compounds formed from elements of three specific groups…

Materials Science · Physics 2020-11-17 Parul R. Raghuvanshi , Suman Mondal , Amrita Bhattacharya

Screening in reduced dimensions has strong consequences on the electronic properties in van der Waals semiconductors, impacting the quasiparticle band gap and exciton binding energy. Screening in these materials is typically treated…

Ternary semiconducting or metallic half-Heusler compounds with an atomic composition 1:1:1 are widely studied for their flexible electronic properties and functionalities. Recently, a new material property of half-Heusler compounds was…

Materials Science · Physics 2014-10-28 Binghai Yan , Anne de Visser

Black phosphorus (BP) has recently emerged as an alternative 2D semiconductor owing to its fascinating electronic properties such as tunable bandgap and high charge carrier mobility. The structural investigation of few-layer BP, such as…

Mesoscale and Nanoscale Physics · Physics 2017-02-01 Yangjin Lee , Jun-Yeong Yoon , Declan Scullion , Jeongsu Jang , Elton J G Santos , Hu Young Jeong , Kwanpyo Kim

Evolutionary algorithms (EA) coupled with Density Functional Theory (DFT) calculations have been used to predict the most stable hydrides of phosphorous (PHn, n = 1-6) at 100, 150 and 200 GPa. At these pressures phosphine is unstable with…

Superconductivity · Physics 2015-12-15 Andrew Shamp , Tyson Terpstra , Tiange Bi , Zackary Falls , Patrick Avery , Eva Zurek

Few-layer black phosphorus was recently rediscovered as a narrow-bandgap atomically thin semiconductor and has already attracted unprecedented attention due to its interesting properties. One feature of this material that sets it apart from…

Mesoscale and Nanoscale Physics · Physics 2017-04-04 Artem Mishchenko , Yang Cao , Geliang Yu , Colin R. Woods , Roman V. Gorbachev , Kostya S. Novoselov , Andre K. Geim , Leonid S. Levitov

Signatures of unconventional superconductivity have been reported in a wide range of van der Waals (vdW) materials. However, their microscopic origin remains unclear due to competing electronic orders, strong spin-orbit coupling, and…

Superconductivity · Physics 2026-01-08 Ankan Biswas , Jagannath Sutradhar , Sudip Kumar Saha , Avraham Klein , Jonathan Ruhman

In their comment cond-mat/9710285 [Phys. Rev. Lett. 80, 5024 (1998)] den Hartog and van Wees (HW) raise objections against our analysis of the experimental data presented in cond-mat/9708162 [Phys. Rev. Lett. 79, 1547 (1997)]. According to…

Superconductivity · Physics 2009-10-31 Klaus Hecker , Helmut Hegger , Alexander Altland , Klaus Fiegle

Surface resonance states are electronic states localized near the surface while remaining hybridized with bulk bands. These states can strongly modify the electric-field response of semiconductors. Here, we demonstrate using scanning…

Mesoscale and Nanoscale Physics · Physics 2026-03-03 Dongming Zhao , Byeongin Lee , Junho Bang , Claudia Felser , Jian-Feng Ge , Doohee Cho

Qian et al [1] recently reported angular-resolved photoemission spectroscopy (ARPES) measurements for Na0.8CoO2 that show two concentric Fermi surfaces (FS) split by a delta k_F that varies by a factor of three around the Brillouin zone…

Materials Science · Physics 2009-11-11 I. I. Mazin , M. D. Johannes , G. A. Sawatzky
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