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We systematically investigate the chemical vapor deposition growth of graphene on Ge(110) as a function of the deposition temperature close to the Ge melting point. By merging spectroscopic and morphological information, we find that the…

Mesoscale and Nanoscale Physics · Physics 2019-09-17 L. Persichetti , M. De Seta , A. M. Scaparro , V. Miseikis , A. Notargiacomo , A. Ruocco , A. Sgarlata , M. Fanfoni , F. Fabbri , C. Coletti , L. Di Gaspare

Temperature evolution of the 2H-TaSe2 Fermi surface (FS) is studied by high-resolution angle-resolved photoemission spectroscopy (ARPES). High-accuracy determination of the FS geometry was possible after measuring electron momenta and…

Strongly Correlated Electrons · Physics 2009-03-20 D. S. Inosov , D. V. Evtushinsky , V. B. Zabolotnyy , A. A. Kordyuk , B. Buechner , R. Follath , H. Berger , S. V. Borisenko

The growth of para-sexiphenyl (6P) thin films as a function of substrate temperature on Ir{111} supported graphene flakes has been studied in real-time with Low Energy Electron Microscopy (LEEM). Micro Low Energy Electron Diffraction (\mu…

Following letter introduces a theoretical approach to investigate the effect of two-step GaN barrier layer growth methodology on the performance of InGaN/GaN MQW solar cell, in which a lower temperature GaN cap layer was grown on top of…

Mesoscale and Nanoscale Physics · Physics 2016-05-24 Saina Haghkish , Asghar Asgari

The Ga vacancy mediated microstructure evolution of (Ga,Mn)As during growth and post-growth annealing is studied using a multi-scale approach. The migration barriers for the Ga vacancies and substitutional Mn together with their…

Materials Science · Physics 2007-05-23 Hannes Raebiger , Maria Ganchenkova , Juhani von Boehm

Understanding broadband photoconductive behaviour in two dimensional layered materials are important in order to utilize them for a variety of opto-electronic applications. Here we present our results of photocurrent spectroscopy…

Mesoscale and Nanoscale Physics · Physics 2021-07-15 Prasanna D. Patil , Milinda Wasala , Sujoy Ghosh , Sidong Lei , Saikat Talapatra

We present photoluminescence studies as a function of temperature from a series of conjugated polymers and a conjugated molecule with distinctly different backbone conformations. The organic materials investigated here are: planar…

Single crystalline bismuth (Bi) is known to have a peculiar electronic structure which is very close to the topological phase transition. The modification of the surface states of Bi depending on the temperature are revealed by…

Materials Science · Physics 2019-04-17 Y. Ohtsubo , Y. Yamashita , J. Kishi , S. Ideta , K. Tanaka , H. Yamane , J. E. Rault , P. Le Fèvre , F. Bertran , S. Kimura

In an absorptive plasma, damping of radiation mechanisms can influence the bremsstrahlung formation in case of large radiation formation lengths. We study qualitatively the influence of this effect on the gluon bremsstrahlung spectrum off…

High Energy Physics - Phenomenology · Physics 2012-09-07 Marcus Bluhm , Pol Bernard Gossiaux , Thierry Gousset , Joerg Aichelin

Near 20.48K and in the temperature range 60--70K, anomalous behavior of thermodynamic, spectral, plastic, elastic and other properties of solid methane is observed. The anomalies in the vicinity of 20.48K are due to the phase $\alpha-\beta$…

Materials Science · Physics 2017-09-12 A. V. Leont'eva , A. Yu. Zakharov , A. Yu. Prokhorov

In this paper, the strain, band-edge, and energy levels of pyramidal In_x Ga_(1-x) As/GaAs quantum dot lasers (QDLs) are investigated by 1-band effective mass approach. It is shown that while temperature has no remarkable effect on the…

Computational Physics · Physics 2017-07-31 Mahdi Ahmadi Borji , Esfandiar Rajaei

In light of the rise of transition metal dichalcogenides as 2D semiconductors for device applications, band engineering becomes very important from an application point of view. In many of these materials, such as the canonical example of…

Materials Science · Physics 2026-05-14 Maciej Bazarnik , Thorsten Deilmann , Marta Przychodnia , Anika Schlenhoff

The geometric and electronic properties of Bi-adsorbed monolayer graphene, enriched by the strong effect of substrate, are investigated by first-principles calculations. The six-layered substrate, corrugated buffer layer, and slightly…

Materials Science · Physics 2016-08-24 S. Y. Lin , S. L. Chang , H. H. Chen , S. H. Su , J. C. A. Huang , M. -F. Lin

We present a compilation of PRONAOS-based results concerning the temperature dependence of the dust submillimeter spectral index, including data from Galactic cirrus, star-forming regions, dust associated to a young stellar object, and a…

Astrophysics · Physics 2017-01-18 X. Dupac , J. -P. Bernard , N. Boudet , M. Giard , J. -M. Lamarre , C. Mény , F. Pajot , I. Ristorcelli

Recent experiments have demonstrated that the glass transition temperature of thin polymer films can be shifted as compared to the same polymer in the bulk, the amplitude and the sign of this effect depending on the interaction between the…

Statistical Mechanics · Physics 2007-05-23 D. Long , P. Sotta

Photoluminescence and magnetotransport measurements have been performed to assess the quality of modulation doped GaAs/AlGaAs heterostructures. The temporal evolution of the low-temperature electron mobility of samples prepared in a…

Materials Science · Physics 2009-11-10 Klaus Wagenhuber , Hans-Peter Tranitz , Matthias Reinwald , Werner Wegscheider

Brown dwarfs bridge the gap between the stellar and planetary mass regimes. Evolving from conditions very similar to the lowest-mass stars, the atmospheres of older brown dwarfs closely resemble those expected in close-in extrasolar giant…

We report the emergence of a giant Mpemba effect in the uniformly heated gas of inelastic rough hard spheres: The initially hotter sample may cool sooner than the colder one, even when the initial temperatures differ by more than one order…

The in-situ growth of superconducting MgB2 thin films was examined from various perspectives. The paper discusses (1) growth temperature, (2) the effect of excess Mg, (3) the effect of residual gas during growth, (4) the effect of in-situ…

Superconductivity · Physics 2009-11-07 K Ueda , M. Naito

Accessing unexplored conditions in crystal growth often reveals remarkable surprises and new regimes of physical behavior. In this work, performing molecular beam epitaxy of the technologically important superconductor NbN at temperatures…