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Diamond, a wide band-gap semiconductor, can be engineered to exhibit superconductivity when doped heavily with boron. The phenomena has been demonstrated in samples grown by chemical vapour deposition where the boron concentration exceeds…

Exploring new unconventional superconductors is of great value for both fundamental research and practical applications. It is a long-term challenge to develop and study more hole-doped superconductors in 1111 system of iron-based…

Superconductivity · Physics 2025-01-27 Yixin Liu , Teng Wang , Zulei Xu , Da Jiang , Yi Zhao , Yanpeng Qi , Xiaoni Wang , Ming Yang , Mao Ye , Wei Peng , Gang Mu

The transport properties of superconducting single crystal Pb nanowires of 55 nm and 70 nm diameter are studied by standard four electrodes method. Resistance-temperature (R-T) scans and magneto-resistance (R-H) measurements show a series…

Mesoscale and Nanoscale Physics · Physics 2012-07-26 Jian Wang , Yi Sun , Mingliang Tian , Bangzhi Liu , Meenakshi Singh , Moses H. W. Chan

Controlled fabrication of nanopores in atomically thin two-dimensional material offers the means to create robust membranes needed for ion transport, nanofiltration, and DNA sensing. Techniques for creating nanopores have relied upon either…

The magnetic ordering temperature of some rare earth based heavy fermion compounds is strongly pressure-dependent and can be completely suppressed at a critical pressure, p$_c$, making way for novel correlated electron states close to this…

Strongly Correlated Electrons · Physics 2009-10-31 F. M. Grosche , I. R. Walker , S. R. Julian , N. D. Mathur , D. M. Freye , M. J. Steiner , G. G. Lonzarich

Inherent properties of superconducting Bi2Sr2CaCu2O8+x films, such as the high superconducting transition temperature Tc, efficient Josephson coupling between neighboring CuO layers, and fast quasiparticle relaxation dynamics, make them a…

Study of superconductivity in layered iron-based materials was initiated in 2006 by Hosono's group, and boosted in 2008 by the superconducting transition temperature, Tc, of 26 K in LaFeAsO1-xFx. Since then, enormous researches have been…

Superconductivity · Physics 2012-01-04 Hyungju Oh , Jisoo Moon , Donghan Shin , Chang-Youn Moon , Hyoung Joon Choi

Superconducting joints are essential for iron-based superconductor's applications in future. In this study, a process for fabricating superconducting joints between Sr1-xKxFe2As2 (Sr-122) tapes is developed for the first time. The Ag sheath…

Superconductivity · Physics 2018-05-10 Yanchang Zhu , Dongliang Wang , Chundong Zhu , He Huang , Zhongtang Xu , Shifa Liu , Zhe Cheng , Yanwei Ma

Ion implantation of Fe and Mn into Al thin films was used for effective modification of Al superconductive properties. Critical temperature of the transition to superconducting state was found to decrease gradually with implanted Fe…

Materials Science · Physics 2009-11-13 Pasi Jalkanen , Vladimir Tuboltsev , Ari Virtanen , Konstantin Arutyunov , Jyrki Raisanen

Significant manifestation of interplay of superconductivity and charge density wave, spin density wave or magnetism is dome-like variation in superconducting critical temperature (Tc) for cuprate, iron-based and heavy Fermion…

Fast cryogenic switches with ultra-low power dissipation are highly sought-after for control electronics of quantum computers, space applications and next generation logic circuits. However, existing high-frequency switches are often bulky,…

Superconductivity · Physics 2021-06-08 M. F. Ritter , A. Fuhrer , D. Z. Haxell , S. Hart , P. Gumann , H. Riel , F. Nichele

We demonstrate ion irradiation by argon or gallium as a wafer-scale post-processing method to increase disorder in superconducting thin films. We study several widely used superconductors, both single-elements and compounds. We show that…

Realization of superconductivity in Group IV semiconductors could have a strong impact in the direction quantum technologies will take in the future. Therefore, it is imperative to understand the nature of the superconducting phases in…

We have fabricated Fe-B thin film composition spreads in search of possible superconducting phases following a theoretical prediction by Kolmogorov et al.^1 Co-sputtering was used to deposit spreads covering a large compositional region of…

Superconductivity · Physics 2013-10-02 Kui Jin , Richard Suchoski , Sean Fackler , Yi Zhang , Xiaoqing Pan , Richard L. Greene , Ichiro Takeuchi

Superconducting germanium films are an intriguing material for possible applications in fields such as cryogenic electronics and quantum bits. Recently, there has been great deal of progress in hyperdoping of Ga doped Ge using ion…

Mesoscale and Nanoscale Physics · Physics 2023-09-06 Patrick J. Strohbeen , Aurelia M. Brook , Wendy L. Sarney , Javad Shabani

A huge enhancement of the superconducting transition temperature Tc was observed in tetragonal FeSe superconductor under high pressure. The onset temperature became as high as 27 K at 1.48 GPa and the pressure coefficient showed a huge…

Dilute magnetic semiconductors, achieved through substitutional doping of spin-polarized transition metals into semiconducting systems, enable experimental modulation of spin dynamics in ways that hold great promise for novel…

Single crystal ZnO nanowires doped with indium are synthesized via the laser-assisted chemical vapor deposition method. The conductivity of the nanowires is measured at low temperatures in magnetic fields both perpendicular and parallel to…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Richard S. Thompson , Dongdong Li , Christopher M. Witte , Jia G. Lu

We employ ab initio modeling to investigate the possibility of attaining high-temperature conventional superconductivity in ambient-pressure materials based on the known MgB$_2$C$_2$ and recently proposed thermodynamically stable NaBC…

By substituting Fe with the 5d-transition metal Pt in BaFe2As2, we have successfully synthesized the superconductors BaFe2-xPtxAs2. The systematic evolution of the lattice constants indicates that the Fe ions were successfully replaced by…

Superconductivity · Physics 2015-05-18 Xiyu Zhu , Fei Han , Gang Mu , Jun Tang , Jing Ju , Katsumi Tanigaki , Hai-Hu Wen
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