43. R. Surdeanu, R. J. Wijngaarden, R. Griessen, C. Rossel, Z. F. Ren, and J. H. Wang, "Crossover from fractal to non-fractal flux penetration in vicinal Tl2Ba2CuO6+d thin films", Physica C 282-287, 2219 - 2220 (1997).
42. C. Rossel, M. Willemin, J. Hofer, H. Keller, Z. F. Ren, and J. H. Wang, "Pairing symmetry in single-layer tetragonal Tl2Ba2CuO6+d from in-plane torque anisotropy", Physica C 282-287, 136 - 139 (1997).
41. A. Hoffman, I. K Schuller, Z. F. Ren, J. Y. Lao, and J. H. Wang, "Persistent photoconducivity in overdoped high Tc thin films", Phys. Rev. B 56, 13742 - 13745 (1997).
40. Z. F. Ren, J. H. Wang, and D. J. Miller, "Continuous control of the superconducting transition temperature from overdoped to underdoped regimes in tetragonal Tl2Ba2CuO6+d Thin Films", Appl. Phys. Lett. 71, 1706 - 1708 (1997).
39. J. R. Thompson, L. Krusin-Elbaum, D. K. Christen, K. J. Song, M. Paranthaman, J. L. Ullman, J. Z. Wu, Z. F. Ren, J. H. Wang, J. E. Tkaczk, and J. A. DeLuca, "Current-density enhancements of the highest-Tc superconductors with GeV protons", Appl. Phys. Lett. 71, 536 - 538 (1997).
38. J. Schutzmann, H. S. Somal, A. A. Tsvetkov, D. van der Marel, G. Koops, N. Koleshnokov, Z. F. Ren, J. H. Wang, E. Bruck, and A.A. Menovski, "Experimental test of the interlayer pairing models for high-Tc superconductivity using grazing-incidence infrared reflectometry", Phys. Rev. B 55, 11118 - 11121 (1997).
37. C. C. Tsuei, J. R. Kirtley, Z. F. Ren, J. H. Wang, H. Raffy, and Z. Z. Li, "Pure dx2-y2 order-parameter symmetry in the tetragonal superconductor Tl2Ba2CuO6+d", Nature 387, 481-483 (1997).
36. L. P. Guo, Z. F. Ren, J. Y. Lao, J. H. Wang, D. K. Christen, C. E. Klabunde, and J. D. Budai, "Epitaxial Superconducting Thin Films Tl0.78Bi0.22Sr1.6Ba0.4Ca2Cu3O9-d on (001) YSZ Synthesized by Laser Ablation and Post-Annealing in Pure Argon", Physica C 277, 13 - 18 (1997).
1996
35. C. C. Tsuei, J. R. Kirtley, A. Gupta, J. Z. Sun, K. A. Moler, Z. F. Ren, and J. H. Wang, "Half-Integer Flux Quantum Effect in Cuprates Superconductors - A Probe of Pairing Symmetry", Physica Scripta T66, 212 - 214 (1996).
34. J. R. Kirtley, C. C. Tsuei, K. A. Moler, J. Z. Sun, A. Gupta, Z. F. Ren, J. H. Wang, Z. Z. Li, H. Raffy, J. Manhart, H. Hilgenkamp, B. Mayer, and C. Gerber, "Scanning SQUID Microscope Tests of the Symmetry of the High-Tc Gap", Czechoslovak Journal of Physics 46, 3169 - 3176 (1996).
33. Z. F. Ren, J. H. Wang, and D. J. Miller, "The Structural Symmetry of Epitaxial Tl2Ba2CuO6+d Thin Films", Appl. Phys. Lett. 69, 1798 - 1800 (1996).
32. R. P. Vasquez, Z. F. Ren, and J. H. Wang, "Electronic structure of Tl2Ba2CuO6+d epitaxial films measured by X-ray photoemission", Phy. Rev. B 54, 6115 - 6118 (1996).
31. J. R. Kirtley, C. C. Tsuei, J. Z. Sun, A. Gupta, K. A. Moler, C. A. Wang, Z. F. Ren, and J. H. Wang, "Tricrystal determination of the symmetry of cuprate superconductors", Turkish J. of Physics 20, 576 - 593 (1996).
30. C. A. Wang, Z. F. Ren, J. H. Wang, D. K. Petrov, M. J. Naughton, W. Y. Yu, and A. Petrou, "Superconducting Epitaxial Tl2Ba2CuO6+d Thin Films on SrTiO3 with Tetragonal Lattice and Continuously Adjustable Critical Temperature", Physica C 262, 98 - 102 (1996).
29. M. Chaparala, O. H. Chung, Z. F. Ren, M. White, P. Coppens, J. H. Wang, A. P. Hope and M. J. Naughton, "Vortex-state resistance near parallel orientation in layered superconductors", Phys. Rev. B 53, 5818 - 5825 (1996).
28. Z. F. Ren, C. A. Wang, J. H. Wang, D. J. Miller, D. K. Christen, J. D. Hettinger, and K. E. Gray, "Composition and Phase Development of Epitaxial Superconducting Tl0.78Bi0.22Sr1.6Ba0.4Ca2Cu3O9-d Thin Films by Laser Ablation and Post Annealing", Physica C 258, 129 - 136 (1996).
27. C. C. Tsuei, J. R. Kirtley, M. Rupp. J. Z. Sun, A. Gupta, M. B. Ketchen, C. A. Wang, Z. F. Ren, J. H. Wang, and M. Bhushan, "Pairing Symmetry in Single-Layer Tetragonal Tl2Ba2CuO6+ Superconductors," Science 271, 329 (1996).
1995
26. I. S. Ghosh, L. F. Cohen, J. V. Thomas, J. L. MacManusDriscoll, R. Somekh, M. Lenkens, S. Hensen, G. Muller, D. Jedamzik, Z. F. Ren, C. A. Wang, J. H. Wang, J. C. Gallop, A. D. Caplin, "Correlations between rf- and dc-magnetic field induced microwave losses and the de-screening current density," J. in HTS thin films, Appl. Supercond. 1 & 2, 1083-1086 (1995).
25. C. A. Wang, Z. F. Ren, and J. H. Wang, "Synthesis of Epitaxial (TlBi)Sr1.6Ba0.4Ca2Cu3O9-d Thin Films at Low Temperature in Pure Argon", Appl. Supercond. 3, 153 - 156 (1995).
24. Z. F. Ren, C. A. Wang, J. H. Wang, D. J. Miller, and K. C. Goretta, "Improvement of Transport Critical Current Density in In-Situ Synthesized Silver-Sheathed Superconducting Tapes of Tl0.78Bi0.22Sr1.6Ba0.4Ca2Cu3O9-d by Intermediate Annealing and Pressing", Physica C 247, 163 - 168 (1995).
23. W. Y. Yu, A. Petrou, C. A. Wang, Z. F. Ren, and J. H. Wang, "Raman Study of Phonons in Superconducting Epitaxial (TlBi)Sr1.6Ba0.4Ca2Cu3O9-d Films", Appl. Supercond. 3, 147 - 157 (1995).
22. C. A. Wang, Z. F. Ren, J. H. Wang, and D. J. Miller, "Superconductivity and Microstructure of Epitaxial (TlBi)Sr1.6Ba0.4Ca2Cu3O9-d Films", Physica C 245, 171 - 180 (1995).
21. Z. F. Ren, C. A. Wang, J. H. Wang, and D. J. Miller, "Superconductivity and Microstructural Characterization of Epitaxial (TlBi)Sr1.6Ba0.4Ca2Cu3O9-d Thin Films", Appl. Supercond. 3, 133 - 138 (1995).
20. Y. F. Li, Z. Z. Sheng, Z. F. Ren, J. H. Wang, and K. C. Goretta, "Fabrication of Ag-Clad (Tl,V)(Sr,Ba)2Ca2Cu3Oy Superconducting Tapes", Supercond. Sci. Technol. 8, 174 - 176 (1995).
1994
19. D. K. Petrov, Z. F. Ren, C. A. Wang, J. H. Wang, and M. J. Naughton, "Break Junction Tunneling in High Temperature Superconductors", Appl. Supercond. 2, 729 - 734 (1994).
18. D. J. Miller, J. G. Hu, Z. F. Ren, and J. H. Wang, "Microstructural Development and Critical Currents in Long-Length (Tl,Bi)-(Sr,Ba)-Ca-Cu-O Wires", J. Electronic Mater. 23, 1151 - 1158 (1994).
17. R. N. Bhattacharya, A. Duda, D. S. Ginley, J. A. DeLuca, Z. F. Ren, C. A. Wang, and J. H. Wang, "Superconducting Thallium Oxide Films via an Electro-Deposited Precursor", Physica C 229, 145 - 151 (1994).
16. Z. F. Ren, C. A. Wang, and J. H. Wang, "Superconducting Epitaxial (TlBi)Sr1.6Ba0.4Ca2Cu3O9-d Film with High Critical Current in Magnetic Field", Appl. Phys. Lett. 65, 237 - 239 (1994).
15. Z. F. Ren, J. H. Wang, D. J. Miller, and K. C. Goretta, "Relationship between Grain Connectivity, Alignment, and Critical Current Density in High-Temperature Superconducting Bulk Materials", Physica C 229, 137 - 144 (1994).
1993
14. Z. F. Ren and J. H. Wang, "Enhanced Formation of 1223 Phase by Partial Replacement of Bi for Tl in In Situ Synthesized Silver-Sheathed Superconducting Tape of Tl1-xBixSr2-yBayCa2Cu3O9-d", Physica C 216, 199 - 204 (1993).
13. Z. F. Ren and J. H. Wang, "Superior Flux-Pinning in In Situ Synthesized Silver-Sheathed Superconducting Tape of Tl0.5Pb0.5Ba0.4Sr1.6Ca0.8Y0.2Cu3Oy", Appl. Phys. Lett. 62, 3025 - 3027 (1993).
1992
12. Z. F. Ren and J. H. Wang, "Uniform and Flexible 24-Meter Superconducting Tape of Silver-Sheathed Tl0.5Pb0.5Ba0.4Sr1.6Ca2Cu3O8.2", Appl. Phys. Lett. 61, 1715 - 1717 (1992).
11. M. Qi, Z. F. Ren, Y. Gao, P. Lee, Y. L. Soo, and J. H. Wang, "The Influence of Hydrogen Reduction on Single Crystals of Bi2Sr2CaCu2Oy", Physica C 192, 55 - 59 (1992).
1991
10. Z. F. Ren, M. Qi, and J. H. Wang, "Enhancement of Critical Current Density in Tl-Ba- Ca-Cu-O Type Superconductors by the Addition of SnO2", Physica C 184, 24 - 28 (1991).
9. Z. F. Ren and J. H. Wang, "Effect of Compressive Reorientation on the Tc and Jc of the Superconducting Composite AgxBi1.7Pb0.3Sr2Ca2Cu3O10", J. Mater. Sci. Lett. 10, 1139 - 1141 (1991).
8. Z. F. Ren, M. J. Naughton, P. Lee, and J. H. Wang, "Growth of Superconducting Single Crystals of TlmBa2Can-1CunOy in a Convenient Way", J. Crystal Growth 112, 587 - 590 (1991).
1990
7. Z. F. Ren, Y. F. Chen, Y. D. Jiang, and W. Y. Guan, "Single Crystal Growth and Characterization in Ca-Doped Y-Ba-Cu-O System", J. Mater. Sci. Lett. 9, 738 - 740 (1990).
6. Z. F. Ren, J. G. Wen, Y. D. Jiang, and W. Y. Guan, "Growth and Characterization of 2201 Single Crystals in Bi-based System", J. Crystal Growth 102, 349 - 353 (1990).
1989
5. Z. F. Ren, Xiuli Yan, Y. D. Jiang, and W. Y. Guan, "Effects of Growth Conditions on the Size of Superconducting Crystals in Bi-Sr-Ca-Cu-O System", Chinese Phys. Lett. 6, 333 - 334 (1989).
4. J. G. Wen, Y. Liu, Z. F. Ren, Y. F. Yan, Y. Q. Zhou, and K. K. Fung, "Structure Study of Undoped and Doped Bi2Sr2CuO6 Phase by Transmission Electron Microscopy", Appl. Phys. Lett. 55, 2775 - 2777 (1989).
3. Z. F. Ren, Xiuli Yan, Y. D. Jiang, and W. Y. Guan, "The Best Composition for Growing Large Single Crystals in Bi-Sr-Ca-Cu-O System", Rengong Jingti 18, 97 - 101 (1989).
1988
2. Z. F. Ren, Xiuli Yan, Y. D. Jiang, and W. Y. Guan, "Growth of Superconducting Single Crystals of Composition Bi:Sr:Ca:Cu=2:2:1:2 in the Bi-Sr-Ca-Cu-O System", J. Crystal Growth 92, 677 - 681 (1988).
1. Z. F. Ren and C. F. Zhang, "Transformation of Crystal Morphology of Eutectic Composite In Situ", Jinshu Xuebao 24, B299 - B301 (1988).