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	Local plastic deformation effects on the critical current of high-J_c Nb₃Sn strands under uniaxial strain 期刊论文 OAI收割 SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2024, 卷号: 37 作者: Liu, Yunhao; Sun, Yi; Gao, Peng; Nijhuis, Arend; Devred, Arnaud \| 收藏 \| 浏览/下载：11/0 \| 提交时间：2024/11/20 high J(c) Nb3Sn strand local plastic deformation uniaxial strain critical current
	High performance of an innovative cable-in-conduit conductor with CWS cable pattern 期刊论文 OAI收割 SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2024, 卷号: 37 作者: Guo, Zichuan; Liu, Yunhao; Dai, Chao; Nijhuis, Arend; Wang, Wei \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2024/11/20 high J (c) Nb3Sn CICC CWS STP electromagnetic cycling performance degradation AC losses
	Experimental Research of the New Developed High-J(c) Nb3Sn Superconducting Strand for 14 T MRI Magnet 期刊论文 OAI收割 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2021, 卷号: 31 作者: Xu, Aihua; Zhu, Yajun; Wang, Jiawei; Chang, Wangna; Zhang, Yaofang \| 收藏 \| 浏览/下载：118/0 \| 提交时间：2021/08/30 14 T MRI Nb3Sn strand High-J(c) experimental research
	Performance test and analysis of the first large-scale cable-in-conduit conductor with high J(c) Nb3Sn strand for fusion reactor 期刊论文 OAI收割 NUCLEAR FUSION, 2021, 卷号: 61 作者: Dai, Chao; Wu, Yu; Li, Jiangang; Guo, Zichuan; Qin, Jinggang \| 收藏 \| 浏览/下载：43/0 \| 提交时间：2021/04/26 CFETR fusion conductors high current superconducting cables high magnetic field high-J(c) Nb3Sn strand STP cable pattern
	An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割 Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101 作者: HXMT \| 收藏 \| 浏览/下载：64/0 \| 提交时间：2022/02/08 accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract: Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions. Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst. Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.
	Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat 期刊论文 OAI收割 Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40 作者: HXMT \| 收藏 \| 浏览/下载：61/0 \| 提交时间：2022/02/08 Accretion accretion disks Black hole physics X-rays: binaries: Swift J1658.2-4242 Astrophysics - High Energy Astrophysical Phenomena Abstract: We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250 keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.
	High Performance Ultra-Thin Niobium Films for Superconducting Hot-Electron Devices 期刊论文 OAI收割 Ieee Transactions on Applied Superconductivity, 2013, 卷号: 23, 期号: 3 X. Q. Jia; L. Kang; X. Y. Liu; Z. H. Wang; B. B. Jin; S. B. Mi; J. Chen; W. W. Xu; P. H. Wu 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/12/24 High critical current density (J(C)) magnetron sputtering niobium superconducting ultra-thin film nb surfaces arrays xps oxides
	Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates 期刊论文 OAI收割 PHYSICAL REVIEW B, 2002, 卷号: 66, 期号: 6, 页码: - 作者: Yu, L; Feng, S; Yuan, F; Su, ZB; Feng, S , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China. \| 收藏 \| 浏览/下载：33/0 \| 提交时间：2012/08/29 High-temperature Superconductors T-c Superconductors Spin Excitation Magnetic Excitations Electronic-structure j Model yba2cu3o6+x Fluctuations Dynamics bi2sr2cacu2o8+delta
	Coexistence of the electron Cooper pair and antiferromagnetic short-range correlation in copper oxide materials 期刊论文 OAI收割 PHYSICS LETTERS A, 1999, 卷号: 257, 期号: 41035, 页码: 325-331 作者: Feng, SP; Feng, SP , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. \| 收藏 \| 浏览/下载：36/0 \| 提交时间：2012/08/29 High-temperature Superconductors T-j Model Optical Conductivity c Superconductivity Penetration Depth Order-parameter Phase Coherence Gap Anisotropy Spin Dynamics Normal-state