Published October 2005 | Version v1
Journal article Metadata-only

Cooperative phenomenon of ferromagnetism and unconventional superconductivity in UGe2: A 73Ge-NQR study under pressure

Creators

  • 1. Osaka Univ., Graduate School of Engineering Science, Dept. of Materials Engineering Science, Toyonaka, Osaka (Japan)
  • 2. Japan Atomic Energy Research Inst., Tokai Research Establishment, Tokai, Ibaraki (Japan)
  • 3. Keio Univ., Dept. of Applied Physics and Physico-Informatics, Yokohama, Kanagawa (Japan)
  • 4. Dept. of Materials Science and Engineering, Univ. of California at Berkely and Lawrence Berkeley National Laboratory, Berkeley, CA (United States)
  • 5. Kobe Univ., Faculty of Science, Dept. of Physics, Kobe, Hyogo (Japan)

Description

We report on a cooperative phenomenon of ferromagnetism and unconventional superconductivity (SC) in UGe2 through the measurements of 73Ge nuclear-quadrupole-resonance (NQR) under pressure (P). The NQR spectra evidenced phase separation into ferromagnetic and paramagnetic phases in the vicinity of Pc ∼ 1.5 GPa, pointing to a first-order transition. The measurements of nuclear-spin-lattice-relaxation-rate 1/T1 revealed that SC emerges under the background of ferromagnetism, but not of the paramagnetic phase. (author)

Additional details

Publishing Information

Journal Title
Journal of the Physical Society of Japan
Journal Volume
74
Journal Issue
10
Journal Page Range
p. 2675-2678
ISSN
0031-9015

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
37019091
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
FERROMAGNETISM; GERMANIUM 73; GERMANIUM ALLOYS; NUCLEAR QUADRUPOLE RESONANCE; PHASE TRANSFORMATIONS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SPIN ECHO; SPIN-LATTICE RELAXATION; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; URANIUM ALLOYS
Descriptors DEC
ACTINIDE ALLOYS; ALLOYS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; EVEN-ODD NUCLEI; GERMANIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MAGNETISM; MILLISECONDS LIVING RADIOISOTOPES; NUCLEI; PHYSICAL PROPERTIES; PRESSURE RANGE; RADIOISOTOPES; RELAXATION; RESONANCE; STABLE ISOTOPES

Optional Information

Notes
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