1. Colossal Magnetoresistance in Metals: a Miracle? Jiunn-Yuan Lin

2. Giant Magnetoresistance in Metals: a Miracle? Jiunn-Yuan Lin

3. Collabrations W. J. Chang, S. W. Huang, T.-Y. Chung, S. Y. Hsu, and J.-Y. Juang Department of Electrophysics, NCTU H. T. Jeng Institute of Physics, Academia Sinica C. P. Sun, and H. D. Yang Department of Physics, NSYUS H. Berger Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland J. M. Chen, and K. Liang NSRRC

6. Subbayah Pullavar photo by P. Y. Plunkett (June 6, 1936)

12. Experiment result H. Berger (Department of Physics, EPF Lausanne, CH-1015 Lausanne, Switzerland).

15. Atomic coordinates (x10 4 ) –160K x y z ________________________________ Re 2471(2) 0 8729(2) Cd 0 2471(4) 6259(3) O11 3059(15) 1941(15) 7500 O12 0 0 8026(16) O13 1889(16) 1889(16) 10000 O14 5000 0 9317(19) O21 0 0 5000 O22 0 5000 7500 ________________________________ Atomic coordinates (x 10 4 )--295K x y z _________________________ Re 2500 7500 5000 Cd 5000 5000 5000 O(1) 3152(9) 6250 6250 O(2) 6250 6250 6250 __________________________ Atomic coordinate (x10 4 ) – 90K x y z _______________________________ Re 2500 -33(3) 8750 Cd 5041(6) 2500 11250 O11 1880(20) 1880(20) 10000 O12 5000 0 9396(14) O13 1970(20) -1970(20) 10000 O2 5000 5000 10000 _______________________________ Space group: Fd-3m for high I4-m2 for middle I4122 for low

16. High temperature Intermediate temperature & low temperature

22. Baibichi et al., PRL (1988)

25. “simple” metals in the magnetic fields

26. The two band model for magnetoresistance

28. 2002 D. J. Singh et al (PRB vol. 65 155109) VASP GGA-PAW-SO-666

33. 2002 H. Harima (Jon. Of Phys. and Chem.Solid)

34. X-files Mulder: Scully, would you be afraid if there is no God? Scully: What I am afraid is: God is talking to us, but nobody is listening.

35. There are indeed miracles around us (and in the labs). The question is : did you notice?