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Tl-based superconducting devices have been drawn much attention for their high transition temperature (Tc), which allow the high temperature superconductors (HTS) devices to operate at temperature near 100 K. The realization of Tl-based devices will promote the research and application of HTS devices. In this work, we present transport properties of Tl2Ba2CaCu2O8 (Tl-2212) microbridges across a low-angle step on LaAlO3 (LAO) substrate. We experimentally demonstrate intrinsic Josephson effects (IJEs) in Tl-2212 films by tailoring the geometry, i.e., reducing the width of the microbridges. In the case of a 1 μm width microbridge, in addition to the observation of voltage branches and remarkable hysteresis on the current–voltage (I–V) characteristics, the temperature dependence of differential resistance shows a finite resistance above 60 K when the bias current is below the critical current. For comparison, the wider microbridges are also investigated, exhibiting a highly critical current but do not showing obvious IJEs. [ABSTRACT FROM AUTHOR]

Abstract: A type of Pd–ZnO catalysts supported on multi-walled carbon nanotubes (MWCNTs) were developed, with excellent performance for CO2 hydrogenation to methanol. Under reaction conditions of 3.0MPa and 523K, the observed turnover-frequency of CO2 hydrogenation reached 1.15×10−2 s−1 over the 16%Pd0.1Zn1/CNTs(h-type). This value was 1.17 and 1.18 times that (0.98×10−2 and 0.97×10−2 s−1) of the 35%Pd0.1Zn1/AC and 20%Pd0.1Zn1/γ-Al2O3 catalysts with the respective optimal Pd0.1Zn1-loading. Using the MWCNTs in place of AC or γ-Al2O3 as the catalyst support displayed little change in the apparent activation energy for the CO2 hydrogenation, but led to an increase of surface concentration of the Pd0-species in the form of PdZn alloys, a kind of catalytically active Pd0-species closely associated with the methanol generation. On the other hand, the MWCNT-supported Pd–ZnO catalyst could reversibly adsorb a greater amount of hydrogen at temperatures ranging from room temperature to 623K. This unique feature would help to generate a micro-environment with higher concentration of active H-adspecies at the surface of the functioning catalyst, thus increasing the rate of surface hydrogenation reactions. In comparison with the “Parallel-type (p-type)” MWCNTs, the “Herringbone-type (h-type)” MWCNTs possess more active surface (with more dangling bonds), and thus, higher capacity for adsorbing H2, which make their promoting action more remarkable. [Copyright &y& Elsevier]

The corresponding description of this figure should be "As shown in Fig.2, the full width at half maximum (FWHM) of the Tl-1223(006) reflection peak is only 0.58 , which shows that the film possesses a good crystalline structure", instead of "As shown in Fig.2, the FWHM of the Tl-1223(003) reflection peak is only 0.58 , which shows that the film possesses a good crystalline structure". 36(2019)057401] Jian Xing( ) 1, Li-Tian Wang( ) 1, Xiao-Xin Gao( ) 1, Xue-Lian Liang( ) 1, Kai-Yong He( ) 1, Ting Xue( ) 1, Sheng-Hui Zhao( ) 1, Jin-Li Zhang( ) 1, Ming He( ) 1,2, Xin-Jie Zhao( ) 1,3, Shao-Lin Yan( ) 1, Pei Wang( ) 4, and Lu Ji( ) 1,3* 1 College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China 2 Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China 3 Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Tianjin 300350, China 4 Beijing Institute of Radio Measurement, Beijing 100854, China (Received 26 October 2020; accepted 18 December 2020; published online 27 January 2021) DOI: 10.1088/0256-307X/38/2/029901 1 4 1 6 1 8 2 0 0. 0 1. 5 3. 0 4. 5 6. 0 I n t e n s i t y (1 0 4 c p s) w (d e g) F W H M = 0. 5 8 O Fig. In Fig.2 of the article, [1] the figure caption should be"Rockingcurveofthe(006)peakoftheTl-1223thin film" instead of "Rocking curve of the (003) peak of the Tl-1223 thin film". [Extracted from the article]