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Related papers: High Quality a-axis outgrowth on c-axis YlCa1-xBa2…

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It is shown that a strong intraplanar incoherent scattering can effectively block the interplanar coherent tunneling between the weakly coupled planes of the highly anisotropic but clean (intrinsic) materials such as the optimally doped…

Superconductivity · Physics 2009-10-30 N. Kumar , T. P. Pareek , A. M. Jayannavar

A high Q-factor microwave resonator in a high magnetic field could be of great use in a wide range of fields, from accelerator design to axion dark matter search. The natural choice of material for the superconducting cavity to be placed in…

Instrumentation and Detectors · Physics 2019-04-11 Danho Ahn , Ohjoon Kwon , Woohyun Chung , Wonjun Jang , Doyu Lee , Jhinhwan Lee , Sung Woo Youn , Dojun Youm , Yannis K. Semertzidis

We used the Coherent Grazing Incidence Small Angle X-Ray Scattering (Co-GISAXS) technique to study the average kinetics and nanoscale dynamics during early-stage a-WSi$_2$ sputter deposition. The kinetic and dynamic properties are examined…

Thick, high quality 4H-SiC epilayers have been grown in a vertical hot-wall chemical vapor deposition system at a high growth rate on (0001) 80 off-axis substrates. We discuss the use of dichlorosilane as the Si-precursor for 4H-SiC…

Connate topological superconductor (TSC) combines topological surface states with nodeless superconductivity in a single material, achieving effective $p$-wave pairing without interface complication. By combining angle-resolved…

Recent experimental studies have indicated novel superconducting proximity effects in thin-film heterostructures comprising ferromagnetic manganites and superconducting cuprates. To look for such effects microscopically, we performed…

Superconductivity · Physics 2011-10-03 I. Fridman , L. Gunawan , G. A. Botton , J. Y. T. Wei

In the present work we study the growth by pulsed laser deposition of YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) films on the r-cut sapphire substrates. To improve the matching of the lattice parameters between the substrate and the film we use…

From the application point of view, large critical current densities Jc (H) for superconducting wires are required, preferably for magnetic fields higher than 5 T. Here we show that strong c-axis textured Sr1-xKxFe2As2 tapes with nearly…

Highly oriented ZnO thin-film has been obtained at a very low pre-heating temperature, with the spin-coating sol-gel technique. The dependence of the c-axis orientation on the pre-heating temperature has been studied with experimental…

Materials Science · Physics 2007-05-23 A. M. P. Santos , Edval J. P. Santos

We consider the interlayer pair-tunneling model for layered cuprates, including an effective single particle hopping along the c-axis. A phenomenological suppression of the c-axis hopping matrix element, by the pseudogap in cuprate…

Superconductivity · Physics 2009-10-31 Biplab Chattopadhyay , A. N. Das

Ultrawide bandgap (UWBG) semiconductors are promising for next-generation power electronics, largely attributed to their substantial bandgap and exceptional breakdown electric field. Rutile GeO2 (r-GeO2) emerges as a promising alternative,…

Materials Science · Physics 2024-10-18 Imteaz Rahaman , Botong Li , Hunter D. Ellis , Brian Roy Van Devener , Randy C Polson , Kai Fu

Understanding physics of high-$T_c$ cuprate superconductors remains one of the important problems in materials science. Though a number of diverse theories argue about the superconductivity and competing orders, ab initio and quantitative…

Strongly Correlated Electrons · Physics 2020-01-29 Takahiro Ohgoe , Motoaki Hirayama , Takahiro Misawa , Kota Ido , Youhei Yamaji , Masatoshi Imada

High-quality Al0.37In0.63N layers have been grown by reactive radio-frequency (RF) sputtering on sapphire, glass and Si (111) at low substrate temperature (from room temperature to 300{\deg}C). Their structural, chemical and optical…

Applied Physics · Physics 2019-09-27 A Núñez-Cascajero , R. Blasco , S Valdueza-Felip , D. Montero , J. Olea , F. B. Naranjo

Topological crystalline insulators (TCIs) possess metallic surface states protected by crystalline symmetry, which are a versatile platform for exploring topological phenomena and potential applications. However, progress in this field has…

Mesoscale and Nanoscale Physics · Physics 2017-10-17 Ying Wang , Guoyu Luo , Junwei Liu , R. Sankar , Nan-Lin Wang , Fangcheng Chou , Liang Fu , Zhiqiang Li

We present very low temperature Scanning Tunneling Microscopy and Spectroscopy (STM/S) measurements in W-based amorphous superconducting nanodeposits grown using a metal-organic precursor and focused-ion-beam. The superconducting gap…

Scanning tunneling spectroscopy applied to the high-$T_{c}$ cuprates has revealed significant spatial inhomogeneity on the nanoscale. Regions on the order of a coherence length in size show variations of the magnitude of the superconducting…

Superconductivity · Physics 2009-05-05 J. P. F. LeBlanc , E. J. Nicol , J. P. Carbotte

YBa$_2$Cu$_3$O$_{7-\delta}$ is a good candidate to systematically study high-temperature superconductivity by nanoengineering using advanced epitaxy. An essential prerequisite for these studies are coherently strained…

Superconductivity · Physics 2018-08-01 Sogol Khanof , Jochen Mannhart , Hans Boschker

A true understanding of the properties of pnictide superconductors require the development of high-quality materials and performing measurements designed to unravel their intrinsic properties and short-range nematic correlations which are…

X-ray photoemission spectroscopy has been used to investigate the depth dependent crystal structures and chemical compositions of sequentially chemical-etched YBa2Cu3O7-d (YBCO) ultrathin film superconductors. In the near-interface region…

Materials Science · Physics 2007-05-23 H. W. Seo , Q. Y. Chen , Paul van der Heide , Wei-Kan Chu

The two-dimensional Hubbard model is studied for small values of the interaction strength (U of the order of the hopping amplitude t), using a variational ansatz well suited for this regime. The wave function, a refined Gutzwiller ansatz,…

Superconductivity · Physics 2019-07-19 Dionys Baeriswyl