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Related papers: Electron-electron scatttering in Sn-doped indium o…

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We report bulk-quality n-type SrTiO3 (n-SrTiO3) thin films fabricated by pulsed laser deposition, with electron mobility as high as 6600 cm2 V-1 s-1 at 2 K and carrier density as low as 2.0 x 10^18cm-3 (~ 0.02 at. %), far exceeding previous…

Strongly Correlated Electrons · Physics 2012-11-14 Y. Kozuka , Y. Hikita , C. Bell , H. Y. Hwang

We describe and discuss the low-temperature resistivity (and the temperature-dependent inelastic scattering rate) of several different doped 2D semiconductor systems from the perspective of the Planckian hypothesis asserting that…

Mesoscale and Nanoscale Physics · Physics 2022-11-02 Seongjin Ahn , Sankar Das Sarma

Ta (100 nm) / NdFeB (5 $\mu$m) / Ta (100 nm) films have been deposited onto Si substrates using triode sputtering (deposition rate ~ 18 $\mu$m/h). A 2-step procedure was used : deposition at temperatures up to 400 C followed by ex-situ…

Materials Science · Physics 2009-11-13 Arnaud Walther , Kirill Khlopkov , Oliver Gutfleisch , Dominique Givord , Nora M. Dempsey

Several SrTiO3 (STO) thin films without electrodes processed by pulsed laser deposition, of thicknesses down to 40 nm, were studied using infrared transmission and reflection spectroscopy. The complex dielectric responses of polar phonon…

Materials Science · Physics 2009-04-29 D. Nuzhnyy , J. Petzelt , S. Kamba , T. Yamada , M. Tyunina , A. K. Tagantsev , J. Levoska , N. Setter

We investigate decoherence of an electron in graphene caused by electron-flexural phonon interaction. We find out that flexural phonons can produce dephasing rate comparable to the electron-electron one. The problem appears to be quite…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Konstantin S. Tikhonov , Wei L. Z. Zhao , Alexander M. Finkel'stein

Electron spectrum of 2D and 3D antiferromagnetic metals is calculated with account of spin-fluctuation corrections within perturbation theory in the s-f exchange model. Effects of the interaction of conduction electrons with spin waves in…

Strongly Correlated Electrons · Physics 2009-10-31 V. Yu. Irkhin , M. I. Katsnelson

We study the effect of the disorder on the metallic behavior of a two-dimensional electron system in silicon. The temperature dependence of conductivity $\sigma (T)$ was measured for different values of substrate bias, which changes both…

Strongly Correlated Electrons · Physics 2007-05-23 X. G. Feng , Dragana Popovic , S. Washburn

We point out a novel, non-universal contribution to the dephasing rate 1/\tau_\phi \equiv \gamma_\phi of conduction electrons in metallic systems: scattering off non-magnetic two-level systems (TLSs) having almost degenerate Kondo ground…

Strongly Correlated Electrons · Physics 2009-10-31 A. Zawadowski , Jan von Delft , D. C. Ralph

Thin films are a prerequisite for application of the emergent exotic ground states in iridates that result from the interplay of strong spin-orbit coupling and electronic correlations. We report on pulsed laser deposition of…

Strongly Correlated Electrons · Physics 2015-02-26 Marcus Jenderka , Rüdiger Schmidt-Grund , Marius Grundmann , Michael Lorenz

Highly conducting $SnO_{2}$ thin films were prepared by chemical spray pyrolysis technique. One set of as-deposited films were annealed in air for 2 h at 850$^{o}$C. These as-deposited and annealed films were irradiated using $Au^{9+}$ ions…

Materials Science · Physics 2017-08-23 Sushant Gupta , Fouran Singh , Indra Sulania , B. Das

We present measurements of the cooling length $\ell_E$ for hot electrons in a GaAs-based high mobility two-dimensional electron gas (2DEG). The thermal measurements are performed on a long 60 $\mu$m-wide channel, which is Joule-heated at…

Mesoscale and Nanoscale Physics · Physics 2026-01-21 A. K. Jain , J. T. Nicholls , S. N. Holmes , G. Jaliel , C. Chen , I. Farrer , D. A. Ritchie

We have probed the magnetic field dependence of the electron phase coherence time $\tau_\phi$ by measuring the Aharonov-Bohm conductance oscillations of mesoscopic Cu rings. Whereas $\tau_\phi$ determined from the low-field…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 F. Pierre , Norman O. Birge

A series of c-axis oriented electron-doped high-Tc superconducting La(2-x)CexCuO4 thin films, from heavily underdoped x=0.06 to heavily overdoped x=0.19, have been synthesized by dc magnetron sputtering technique on (100) SrTiO3 substrates.…

Superconductivity · Physics 2009-08-18 B. X. Wu , K. Jin , J. Yuan , H. B. Wang , T. Hatano , B. R. Zhao , B. Y. Zhu

Magnetic instability in both ultra-pure and carbon-doped MgB2 films is investigated by magneto-optical imaging, transport and bulk magnetization measurements. In the carbon-doped MgB2 thin film, familiar dendritic flux-jump patterns were…

Superconductivity · Physics 2009-11-10 Z. X. Ye , Qiang Li , Y. F. Hu , A. V. Pogrebnyakov , Y. Cui , X. X. Xi , J. M. Redwing , Qi Li

By using the pulsed-laser-ablation technique, we have successfully grown the La$_{3}$Ni$_{2}$O$_{7-\delta}$ thin films with $c$-axis orientation perpendicular to the film surface. X-ray diffraction shows that the (00l) peaks can be well…

Superconductivity · Physics 2025-10-10 Yuecong Liu , Mengjun Ou , Haifeng Chu , Huan Yang , Qing Li , Yingjie Zhang , Hai-Hu Wen

We present a study of the synthesis of epitaxial V$_2$O$_3$ films on $c$-plane Al$_2$O$_3$ substrates by reactive dc-magnetron sputtering. The results reveal a temperature window, at substantially lower values than previously reported,…

Materials Science · Physics 2018-05-03 Einar B. Thorsteinsson , Seyedmohammad Shayestehaminzadeh , Unnar B. Arnalds

We calculate the properties of the 4$d$ ferromagnet SrRuO$_3$ in bulk and thin film form with the aim of understanding the experimentally observed metal to insulator transition at reduced thickness. Although the spatial extent of the 4$d$…

Materials Science · Physics 2008-10-08 James M. Rondinelli , Nuala M. Caffrey , Stefano Sanvito , Nicola A. Spaldin

In this manuscript, we report the results of optical properties of SnS thin films, deposited on FTO coated glass substrates at room temperature by thermal evaporation technique. In addition, the effect of film thickness on the optical…

Materials Science · Physics 2023-01-20 Vinita , P. Arun , Chandra Kumar , R. Rai , B. K. Singh

We assess the impact of the scattering physics assumptions on the thermoelectric properties of five Co-based p-type half-Heusler alloys by considering full energy-dependent scattering times, versus the commonly employed constant scattering…

Materials Science · Physics 2019-12-02 Patrizio Graziosi , Chathurangi Kumarasinghe , Neophytos Neophytou

Susceptibility measurements of patterned thin films at sub-K temperatures were carried out using a scanning SQUID microscope that can resolve signals corresponding to a few hundred Bohr magnetons. Several metallic and insulating thin films,…

Mesoscale and Nanoscale Physics · Physics 2009-07-28 Hendrik Bluhm , Julie A. Bert , Nicholas C. Koshnick , Martin E. Huber , Kathryn A. Moler