TY - JOUR
T1 - Fermi surface and pseudogap evolution in a cuprate superconductor
AU - He, Yang
AU - Yin, Yi
AU - Zech, M.
AU - Soumyanarayanan, Anjan
AU - Yee, Michael M.
AU - Williams, Tess
AU - Boyer, M. C.
AU - Chatterjee, Kamalesh
AU - Wise, W. D.
AU - Zeljkovic, I.
AU - Kondo, Takeshi
AU - Takeuchi, T.
AU - Ikuta, H.
AU - Mistark, Peter
AU - Markiewicz, Robert S.
AU - Bansil, Arun
AU - Sachdev, Subir
AU - Hudson, E. W.
AU - Hoffman, J. E.
PY - 2014
Y1 - 2014
N2 - The unclear relationship between cuprate superconductivity and the pseudogap state remains an impediment to understanding the high transition temperature (Tc) superconducting mechanism. Here, we used magnetic field-dependent scanning tunneling microscopy to provide phase-sensitive proof that d-wave superconductivity coexists with the pseudogap on the antinodal Fermi surface of an overdoped cuprate. Furthermore, by tracking the hole-doping ( p) dependence of the quasi-particle interference pattern within a single bismuth-based cuprate family, we observed a Fermi surface reconstruction slightly below optimal doping, indicating a zero-field quantum phase transition in notable proximity to the maximum superconducting Tc. Surprisingly, this major reorganization of the system's underlying electronic structure has no effect on the smoothly evolving pseudogap.
AB - The unclear relationship between cuprate superconductivity and the pseudogap state remains an impediment to understanding the high transition temperature (Tc) superconducting mechanism. Here, we used magnetic field-dependent scanning tunneling microscopy to provide phase-sensitive proof that d-wave superconductivity coexists with the pseudogap on the antinodal Fermi surface of an overdoped cuprate. Furthermore, by tracking the hole-doping ( p) dependence of the quasi-particle interference pattern within a single bismuth-based cuprate family, we observed a Fermi surface reconstruction slightly below optimal doping, indicating a zero-field quantum phase transition in notable proximity to the maximum superconducting Tc. Surprisingly, this major reorganization of the system's underlying electronic structure has no effect on the smoothly evolving pseudogap.
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U2 - 10.1126/science.1248221
DO - 10.1126/science.1248221
M3 - Article
C2 - 24812396
AN - SCOPUS:84900333734
SN - 0036-8075
VL - 344
SP - 608
EP - 611
JO - Science
JF - Science
IS - 6184
ER -