W
Walter Hardy
Researcher at University of British Columbia
Publications - 429
Citations - 23583
Walter Hardy is an academic researcher from University of British Columbia. The author has contributed to research in topics: Superconductivity & Pseudogap. The author has an hindex of 76, co-authored 429 publications receiving 21834 citations. Previous affiliations of Walter Hardy include Lawrence Berkeley National Laboratory & Canadian Institute for Advanced Research.
Papers
More filters
Journal ArticleDOI
Universal correlations between Tc and ns/m (carrier density over effective mass) in high-Tc cuprate superconductors.
Yasutomo J. Uemura,Graeme Luke,B. J. Sternlieb,J. H. Brewer,J. F. Carolan,Walter Hardy,Ryosuke Kadono,J. R. Kempton,R. F. Kiefl,S. R. Kreitzman,P. Mulhern,T. M. Riseman,David Williams,B.X. Yang,S. Uchida,H. Takagi,Jagannatha Gopalakrishnan,Arthur W. Sleight,Munirpallam Appadorai Subramanian,C. L. Chien,M. Z. Cieplak,Gang Xiao,Victor Y. Lee,B. W. Statt,C. E. Stronach,W. J. Kossler,X. H. Yu +26 more
TL;DR: The muon-spin-relaxation rate sigma has been measured in sixteen specimens of high-T/ sub c/ cuprate superconductors and a universal linear relation between T/sub c/ and sigma(T..-->..0)proportionaln/sub s//m/sup */ has been found with increasing carrier doping.
Journal ArticleDOI
Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67
Johan Juul Chang,Johan Juul Chang,Elizabeth Blackburn,Alexander T. Holmes,Niels Bech Christensen,Jacob Larsen,Jacob Larsen,Joël Mesot,Joël Mesot,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,A. Watenphul,Martin v. Zimmermann,E. M. Forgan,Stephen M Hayden +18 more
TL;DR: X-ray diffraction experiments reveal that spatial charge ordering occurs in the pseudogap state of YBa2Cu3O6.67 as discussed by the authors, which competes with high-temperature superconductivity, and their relative strengths can be tuned using a magnetic field.
Journal ArticleDOI
Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor.
Nicolas Doiron-Leyraud,Cyril Proust,David LeBoeuf,Julien Levallois,J.-B. Bonnemaison,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,Louis Taillefer,Louis Taillefer +12 more
TL;DR: The observation of quantum oscillations in the electrical resistance of the oxygen-ordered copper oxide YBa2Cu3O6.5 establishes the existence of a well-defined Fermi surface in the ground state of underdoped copper oxides, once superconductivity is suppressed by a magnetic field.
Journal ArticleDOI
Precision measurements of the temperature dependence of lambda in YBa2Cu3O6.95: Strong evidence for nodes in the gap function.
TL;DR: The strong linear dependence is believed to be characteristic of the pure system and that its apparent absence in thin films and some crystals is due to the presence of defects.
Journal ArticleDOI
Magnetic-field-induced charge-stripe order in the high-temperature superconductor YBa2Cu3Oy.
Tao Wu,Hadrien Mayaffre,Steffen Krämer,Mladen Horvatić,Claude Berthier,Walter Hardy,Walter Hardy,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Marc-Henri Julien +11 more
TL;DR: Nuclear magnetic resonance measurements are reported showing that high magnetic fields actually induce charge order, without spin order, in the CuO2 planes of YBa2Cu3Oy, and it is argued that it is most probably the same 4a-periodic modulation as in stripe-ordered copper oxides.