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Desert mirages were simulated in the laboratory by heating a flat surface of sand. This showed that a boundary layer of air, of only a few millimeters immediately covering a heated surface has nearly the same thickness over a wide range of…

Physics Education · Physics 2019-11-12 Nabil W Wakid

We present detailed experimental studies of the temperature dependence of the plateau conductance of GaAs quantum point contacts in the temperature range from 0.3 K to 10 K. Due to a strong lateral confinement produced by a shallow-etching…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. E. Hansen , A. Kristensen , H. Bruus

Mechanical shear deformations lead, in some cases, to effects similar to those resulting from ion irradiation. Here we characterize the effects of shear velocity and temperature on amorphous silicon (\aSi) modelled using classical molecular…

Materials Science · Physics 2015-05-19 Ali Kerrache , Normand Mousseau , Laurent J. Lewis

We study the global influence of curvature on the free energy landscape of two-dimensional binary mixtures confined on closed surfaces. Starting from a generic effective free energy, constructed on the basis of symmetry considerations and…

Soft Condensed Matter · Physics 2019-09-11 Piermarco Fonda , Melissa Rinaldin , Daniela J. Kraft , Luca Giomi

Polarization dependence of resonant anomalous surface x-ray scattering (RASXS) was studied for interfaces buried in electrolytes or in high-pressure gas. We demonstrate that RASXS exhibits strong polarization dependence when the surface is…

Inelastic light-scattering spectra of underdoped ${\rm La_{2-x}Sr_xCuO_4}$ (LSCO) single crystals are presented which provide direct evidence of the formation of quasi one-dimensional charged structures in the two-dimensional $\rm CuO_2$…

Strongly Correlated Electrons · Physics 2007-05-23 L. Tassini , F. Venturini , Q. -M. Zhang , R. Hackl , N. Kikugawa , T. Fujita

We consider the leading non-analytic temperature dependence of the specific heat and temperature and momentum dependence of the spin susceptibility for two dimensional fermionic systems with non-circular Fermi surfaces. We demonstrate the…

Strongly Correlated Electrons · Physics 2007-05-23 Andrey V. Chubukov , Andrew J. Millis

Surface reconstructions of Au film on Pd(110) substrate are studied using a local Einstein approximation to quasiharmonic theory with the Sutton-Chen interatomic potential. Temperature dependent surface free energies for different coverages…

Condensed Matter · Physics 2009-10-28 J. A. Nieminen

Understanding and predicting the dominant diffusion processes in Cr2O3 is essential to its optimization for anti-corrosion coatings, spintronics, and other applications. Despite significant theoretical effort in modeling defect mediated…

Many systems in nature and the synthetic world involve ordered arrangements of units on two-dimensional surfaces. We review here the fundamental role payed by both the topology of the underlying surface and its detailed curvature. Topology…

Soft Condensed Matter · Physics 2009-07-31 Mark J. Bowick , Luca Giomi

The chemical and electronic properties of surfaces and interfaces are important for many technologically relevant processes, be it in information processing, where interfacial electronic properties are crucial for device performance, or in…

We performed a comprehensive angle-resolved photoemission spectroscopy study of the electronic band structure of LaOFeAs single crystals. We found that samples cleaved at low temperature show an unstable and highly complicated band…

Superconductivity · Physics 2016-09-26 P. Zhang , J. Ma , T. Qian , Y. G. Shi , A. V. Fedorov , J. D. Denlinger , X. X. Wu , J. P. Hu , P. Richard , H. Ding

The Raman spectra on the cleaved surface of La$_{2-x}$Sr$_x$CuO$_4$ is found to be different from those on the mechanically polished or chemically etched surface. On the cleaved surface, the step-like increase of the scattering intensity…

Superconductivity · Physics 2007-05-23 S. Sugai , Y. Takayanagi , N. Hayamizu

Atomic-resolution scanning tunneling spectroscopy is used to study the spectrum of quasiparticle states in superconducting Sr2RuO4. The measured temperature dependence of the quasiparticle spectrum is consistent with a multi-band…

Superconductivity · Physics 2011-06-08 C. Lupien , S. K. Dutta , B. I. Barker , Y. Maeno , J. C. Davis

Recent measurements show that the free surfaces of liquid metals and alloys are always layered, regardless of composition and surface tension; a result supported by three decades of simulations and theory. Recent theoretical work claims,…

Soft Condensed Matter · Physics 2007-05-23 Oleg Shpyrko , Masafumi Fukuto , Peter Pershan , Ben Ocko , Ivan Kuzmenko , Thomas Gog , Moshe Deutsch

Using the density functional theory (DFT) formulated within the framework of the plane-wave basis projector augmented wave (PAW) method, the temperature-dependent elastic properties of MgRE (RE=Y, Dy, Pr, Sc, Tb) intermetallics with B2-type…

Materials Science · Physics 2015-05-28 Rui Wang , Shaofeng Wang , Yin Yao

Understanding oxidation mechanisms of layered semiconducting transition-metal dichalcogenide (TMDC) is important not only for controlling native oxide formation but also for synthesis of oxide and oxysulfide products. Here, reactive…

Materials Science · Physics 2023-03-07 Liqiu Yang , Rafael Jaramillo , Rajiv K. Kalia , Aiichiro Nakano , Priya Vashishta

How much of Io's SO$_2$ atmosphere is driven by volcanic outgasing or sublimation of SO$_2$ surface frost is a question with a considerable history. We develop a time dependent surface temperature model including thermal inertia and the…

Earth and Planetary Astrophysics · Physics 2025-06-25 A. -C. Dott , J. Saur , S. Schlegel , D. F. Strobel , K. de Kleer , I. de Pater

A few results that indicate the presence of temperature variations in gaseous nebulae are reviewed. The evidence is based on: a) temperatures derived from different methods, and b) on comparisons of abundances predicted by models of…

Astrophysics · Physics 2007-05-23 Manuel Peimbert , Antonio Peimbert

We observe large-scale surface terraces in tungsten oxidised at high temperature and in high vacuum. Their formation is highly dependent on crystal orientation, with only {111} grains showing prominent terraces. Terrace facets are aligned…

Materials Science · Physics 2019-08-07 Hongbing Yu , Suchandrima Das , Junliang Liu , Jason Hess , Felix Hofmann