Kirtley Scientific - John R. Kirtley

Phase sensitive pairing
symmetry tests



Our experiments, which imaged the half-flux quantum effect in a tricrystal geometry, showed that the gap has predominantly d-wave symmetry in a number of the cuprate high-Tc superconductors over a broad range in doping and temperature.

"Pairing Symmetry and Flux Quantization in a Tricrystal Superconducting Ring of YBa2Cu3O7-d", C.C. Tsuei, J.R. Kirtley, C.C. Chi, Lock See Yu-Jahnes, A. Gupta, T. Shaw, J.Z. Sun, and M.B. Ketchen, Phys. Rev. Lett. 73,593(1994).

"Symmetry of the order parameter in the high-Tc superconductor YBa2Cu3O7 -d", J.R. Kirtley, C.C. Tsuei, J.Z. Sun, C.C. Chi, Lock See Yu-Jahnes, A. Gupta, M. Rupp, and M.B. Ketchen, Nature 373,225(1995).

"Half-integer flux quantum effect in tricrystal Bi2Sr2CaCu2O8+d", J.R. Kirtley, C.C. Tsuei, H. Raffy, Z.Z. Li, A. Gupta, J.Z. Sun, and S. Megert, Europhys. Lett. 36,707(1996).

"Generation of Magnetic Flux by Single Grain Boundaries of Y Ba 2Cu3O7-x", J. Mannhart, H. Hilgenkamp, B. Mayer, Ch. Gerber, J.R. Kirtley, K.A. Moler, and M. Sigrist, Phys. Rev. Lett. 77 ,2782(1996).

"Pairing symmetry in Single-Layer Tetragonal Tl 2Ba2CuO6+d Superconductors", C.C. Tsuei, J.R. Kirtley, M. Rupp, J.Z. Sun, A. Gupta, and M.B. Ketchen, Science, 272,329(1996).

"Probing High-Temperature Superconductivity", J.R. Kirtley and C.C. Tsuei, Scientific American, August 1996, pages 68-73.

"Direct imaging of integer and half-integer Josephson vortices in high-Tc grain boundaries", J.R. Kirtley, C.C. Tsuei, Martin Rupp, J.Z. Sun, Lock See Yu-Jahnes, A. Gupta, M.B. Ketchen, K.A. Moler, and M. Bhushan, Physical Review Letters 76,1336(1996).

"Pure dx2-y2 order parameter symmetry in the tetragonal superconductor Tl 2Ba2CuO6+d" C.C. Tsuei, J.R. Kirtley, Z.F. Ren, J.H. Wang, H. Raffy, and Z.Z. Li., , Nature 387, 481 (1997).

"Temperature dependence of the Half-Integer Magnetic Flux Quantum", J.R. Kirtley, C.C. Tsuei, and K.A. Moler, Science 285,1373(1999).

"Pairing symmetry in cuprate superconductors", C.C. Tsuei and J.R. Kirtley, Reviews of Modern Physics 72, 969-1016 (2000).

"Robust dx2-y2 pairing symmetry in high-temperature superconductors", C.C. Tsuei, J.R. Kirtley, G. Hammerl, J. Mannhart, H. Raffy, and Z.Z. Li, Phys. Rev. Lett. 93, 187004 (2004).