2003/07/01 by F. Zámborszky, F. Zamborszky, G. Wu +10 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Condensed Matter Physics #Atmospheric temperature range #Atomic physics #Condensed matter physics #High-pressure geophysics and materials #Magnetic field #Magnetic resonance imaging #Nuclear magnetic resonance #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Spin echo #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.92.047003
4 pages, 4 figures
arxiv created 2003/07/01 · openalex publication_date 2004/01/29 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
63Cu nuclear magnetic resonance spin-echo decay rate (T2^\ensuremath-1) measurements are reported for the normal and superconducting states of a single crystal of Pr1.85Ce0.15CuO_4\ensuremath-y in a magnetic field B0=9 T over the temperature range 2<T<200 K. The spin-echo decay rate is temperature dependent for T<55 K and has a substantial dependence on the radio frequency (rf) pulse parameters below T\ensuremath≈25 K. This dependence indicates that T2^\ensuremath-1 is strongly effected by a local magnetic field distribution that can be modified by the rf pulses, including ones that are not at the nuclear Larmor frequency. The low-temperature results are consistent with the formation of a static inhomogeneous electronic structure that couples to the rf fields of the pulses.