Journal ArticleDOI
Nano Josephson superconducting tunnel junctions in YBa2Cu3O7–δ directly patterned with a focused helium ion beam
Shane A. Cybart,Ethan Y. Cho,T. J. Wong,Björn H. Wehlin,Meng K. Ma,Chuong Huynh,Robert C. Dynes +6 more
TLDR
All-HTS Josephson superconducting tunnel junctions created by using a 500-pm-diameter focused beam of helium ions to directly write tunnel barriers into YBa2Cu3O(7-δ) (YBCO) thin films are demonstrated and the ability to control the barrier properties continuously from conducting to insulating by varying the irradiation dose is demonstrated.Abstract:
High-quality superconducting tunnel junctions operating above liquid nitrogen temperatures can be fabricated with a focused beam of helium ions that directly writes tunnel barriers in a cuprate superconductor.read more
Citations
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Journal ArticleDOI
Directing Matter: Toward Atomic-Scale 3D Nanofabrication.
Stephen Jesse,Albina Y. Borisevich,Jason D. Fowlkes,Andrew R. Lupini,Philip D. Rack,Raymond R. Unocic,Bobby G. Sumpter,Sergei V. Kalinin,Alex Belianinov,Olga S. Ovchinnikova +9 more
TL;DR: The gaps that currently constrain the processing range of these platforms are laid out, reflect on indirect requirements, such as the integration of large-scale data analysis with theory, and discuss future prospects of these technologies.
Journal ArticleDOI
Electromagnetic Functions of Patterned 2D Materials for Micro–Nano Devices Covering GHz, THz, and Optical Frequency
Journal ArticleDOI
Intermediate bosonic metallic state in the superconductor-insulator transition
Chao Yang,Yi Liu,Yang Wang,Liu Feng,Qianmei He,Jian Sun,Yue Tang,Chunchun Wu,Jie Xiong,Wanli Zhang,Xi Lin,Hong Yao,Haiwen Liu,Gustavo E. Fernandes,Jimmy Xu,James M. Valles,Jian Wang,Yanrong Li +17 more
TL;DR: How quantum phase coherence evolves across superconductor–metal–insulator transitions through magnetoconductance quantum oscillations in nanopatterned high-temperature superconducting films is studied and it is suggested that the anomalous metallic state is bosonic and that the saturation ofphase coherence plays a prominent role in its formation.
Journal ArticleDOI
Recent advances in focused ion beam nanofabrication for nanostructures and devices: fundamentals and applications
Ping Li,Siyu Chen,Houfu Dai,Zhengmei Yang,Zhiquan Chen,Yasi Wang,Yiqin Chen,Wenqiang Peng,Wenqiang Peng,Wubin Shan,Huigao Duan +10 more
TL;DR: In this paper, a series of FIB nanofabrication factors related to the fabrication of 3D nanostructures and devices, including mechanisms, instruments, processes, and typical applications, are systematically summarized and analyzed in detail.
Journal ArticleDOI
Review Article: Advanced nanoscale patterning and material synthesis with gas field helium and neon ion beams
TL;DR: In this article, the authors focus on the nanoscale synthesis applications for these ion species which have been demonstrated to date and discuss the future outlook of He+ and Ne+ nanoprocessing techniques and applications.
References
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Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion
TL;DR: In this paper, the Bogoliubov equations were used to model the transmission and reflection of particles at the tunnel junction of normal-superconducting micro-constriction contacts, and a simple theory for the $I\ensuremath{-}V$ curves of normal superconducting contacts was proposed to describe the crossover from metallic to tunnel junction behavior.
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Effect of ac Impedance on dc Voltage‐Current Characteristics of Superconductor Weak‐Link Junctions
TL;DR: In this paper, the effect of the Josephson pair current in a weak-link superconductor junction is considered and two special cases which illustrate the basic principles involved are worked out.
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Current‐voltage characteristics of josephson junctions
TL;DR: In this paper, a model for superconducting Josephson junctions analogous to the driven simple pendulum with damping gives dc I•V curves displaying hysteresis for light damping.
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Helium ion microscope: A new tool for nanoscale microscopy and metrology
TL;DR: In this article, the authors developed a new helium ion microscope which has many advantages over both traditional scanning electron microscopes (SEMs) and focused ion beams (FIBs).