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Rutile germanium dioxide (r-GeO2) has recently emerged as a promising ultrawide-bandgap (UWBG) semiconductor owing to its wide bandgap (~4.4-5.1 eV), ambipolar doping potential, and high theoretical thermal conductivity. However,…

In this work, we report on the growth of high-mobility $\beta$-Ga$_2$O$_3$ homoepitaxial thin films grown at a temperature much lower than the conventional growth temperature window for metalorganic vapor phase epitaxy. Low-temperature…

Developing new material platforms for use in superconductor-semiconductor hybrid structures is desirable due to limitations caused by intrinsic microwave losses present in commonly used III/V material systems. With the recent reports on…

The search for topological superconductivity has motivated investigations into materials that combine topological and superconducting properties. The half-Heusler compound YPtBi appears to be such a material, however experiments have thus…

In the present study we have demonstrated epitaxial stabilization of the metastable magnetically-hard $\varepsilon$-Fe$_2$O$_3$ phase on top of a thin MgO(111) buffer layer grown onto the GaN (0001) surface. The primary purpose to introduce…

Mesoscale and Nanoscale Physics · Physics 2019-09-11 Victor Ukleev , Mikhail Volkov , Alexander Korovin , Thomas Saerbeck , Nikolai Sokolov , Sergey Suturin

Pr$_{1-x}$Ca$_x$Ba$_2$Cu$_3$O$_{7-\delta}$($x\approx$0.5) thin films have been grown on SrTiO$_3$ and YSZ substrates by the pulsed laser ablation. The substrate temperature dependence of orientation and superconducting poperties were…

Superconductivity · Physics 2007-05-23 J. Y. Xiang , Z. Y. Liu , J. Li , P. Wang , R. L. Wang , H. P. Yang , Y. Z. Zhang , D. N. Zheng , H. H. Wen , Z. X. Zhao

Epitaxial Fe(Te,Se) thin films have been grown on various substrates but never been realized on magnetic layers. Here we report the epitaxial growth of four-fold Fe(Te,Se) film on a six-fold antiferromagnetic insulator, MnTe. The…

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

Molecular-beam epitaxy (MBE) provides a simple but powerful way to synthesize large-area high-quality thin films and heterostructures of a wide variety of materials including accomplished group III-V and II-VI semiconductors as well as…

Materials Science · Physics 2017-09-12 Masaki Nakano , Yue Wang , Yuta Kashiwabara , Hideki Matsuoka , Yoshihiro Iwasa

The authors demonstrated that a full-Heusler Co2FeGe (CFG) alloy thin film was epitaxially grown by rapid-thermal-annealing-induced germanidation of an Fe/Co/pseudo-Ge(001)-on-insulator (GOI) multilayer formed on a Si-on-insulator (SOI)…

Materials Science · Physics 2011-04-29 Yota Takamura , Takuya Sakurai , Ryosho Nakane , Yusuke Shuto , Satoshi Sugahara

We have selectively grown thin epitaxial GaAs films on Ge substrates with the aid of a 200 nm thin SiO2 mask layer. The selectively grown structures have lateral sizes ranging from 1 um width up to large areas of 1 by 1 mm2. The growth is…

Materials Science · Physics 2007-05-23 G. Brammertz , M. Caymax , Y. Mols , S. Degroote , M. Leys , J. Van Steenbergen , G. Winderickx , G. Borghs , M. Meuris

Epitaxial thin films of LaFeAsO were fabricated on MgO (001) and mixed-perovskite (La, Sr)(Al, Ta)O3 (001) single-crystal substrates by pulsed laser deposition using a Nd:YAG second harmonic source and a 10 at.% F-doped LaFeAsO disk target.…

Superconductivity · Physics 2008-10-23 Hidenori Hiramatsu , Takayoshi Katase , Toshio Kamiya , Masahiro Hirano , Hideo Hosono

Whether or not epitaxially grown superconducting films have the same bulk-like superconducting properties is an important concern. We report the structure and the electronic properties of epitaxially grown Ba(Fe1-xCox)2As2 films using…

Superconductivity · Physics 2018-08-01 S. Kim , S. Yi , M. Oh , B. G. Jang , W. Nam , Y. -C. Yoo , M. Lee , H. Jeon , I. Zoh , H. Lee , C. Zhang , K. H. Kim , J. Seo , J. H. Shim , J. S. Chae , Y. Kuk

We have investigated the growth of BaTiO3 thin films deposited on pure and 1% Nb-doped SrTiO3(001) single crystals using atomic oxygen assisted molecular beam epitaxy (AO-MBE) and dedicated Ba and Ti Knudsen cells. Thicknesses up to 30 nm…

Materials Science · Physics 2015-06-12 A. Barbier , C. Mocuta , D. Stanescu , P. Jegou , N. Jedrecy , H. Magnan

NbN films are grown on c-plane sapphire substrates by molecular beam epitaxy. The structural and superconducting properties of the film are characterized to demonstrate that growth parameters such as substrate temperature and active…

Superconductivity · Physics 2022-03-29 John G. Wright , Huili G. Xing , Debdeep Jena

Doping-induced superconductivity in group IV elements may enable quantum functionalities in material systems accessible with well-established semiconductor technologies. Non-equilibrium hyperdoping of group III atoms into C, Si, or Ge can…

The presumably unconventional superconductor Beta-FeSe was deposited by radio frequency sputtering and molecular beam epitaxy (MBE) from two elementary sources. Superconducting thin films were grown in (001)-orientation on MgO(100) and…

Superconductivity · Physics 2015-05-12 Eike Venzmer , Alexander Kronenberg , Janek Maletz , Martin Jourdan

The electronic transport properties of a highly hydrogen-substituted 1111-type SmFeAsO epitaxial film with high critical-temperature (Tc = 45 K) were investigated under high magnetic fields. By using a single-turn magnet generating up to…

We report molecular beam epitaxial growth of a SnTe (111) layer on a CdTe template, fabricated by depositing it on a GaAs (111)A substrate, instead of BaF$_2$ which has been conventionally used as a substrate. By optimizing temperatures for…

Materials Science · Physics 2016-09-21 Ryo Ishikawa , Tomonari Yamaguchi , Yusuke Ohtaki , Ryota Akiyama , Shinji Kuroda

The use of highly efficient and solarblind GaN photocathodes as part of multichannel plate UV detectors for applications in astronomy would strongly benefit from the direct growth of GaN on typical window materials with high transmission…