Possible Mass Enhancement by Multipole Fluctuations Excited via the Singlet–Triplet Crystal Electric Field States in PrOs<sub>4</sub>Sb<sub>12</sub>: Sb-NMR Studies Using a Single Crystal
-
- Hideki Tou
- Department of Physics, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
-
- Yoshihiko Inaoka
- Department of Quantum Matter, AdSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
-
- Masahiro Doi
- Department of Quantum Matter, AdSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
-
- Masafumi Sera
- Department of Quantum Matter, AdSM, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
-
- Kenji Asaki
- Department of Physics, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
-
- Hisashi Kotegawa
- Department of Physics, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
-
- Hitoshi Sugawara
- Department of Physics, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
-
- Hideyuki Sato
- Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Description
121,123 Sb nuclear magnetic resonance (NMR) measurements of a high-quality single crystalline PrOs 4 Sb 12 have been carried out in magnetic fields up to 98 kOe and in the temperature range of 0.4–30 K. From the analysis of the 121 Sb Knight shift ( K ) and magnetic susceptibility at H ≈90 kOe, the transferred hyperfine coupling constants ( A THF ) are obtained. The Sb isotropic hyperfine coupling constant and anisotropic hyperfine coupling tensor are determined as ≈27.6 Oe/µ B and ≈(149.9,42.3,-192.2) Oe/µ B , respectively. The anisotropic part originates from the spin–dipolar field due to the local spin density at Sb 5 p orbital transferred through the hybridization with 4 f electrons. The results are consistent with the Sb 12 5 p molecular orbital with a u symmetry predicted from the band structure calculation. A THF for H ∥[001] is dependent on the magnetic field, suggesting the coupling of the Sb nuclear dipole moment with not only dipole moments but also octupole moments of the Pr 4 f electrons with...
Journal
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 80 (7), 074703-, 2011-07-15
Physical Society of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1360847871800700928
-
- NII Article ID
- 210000109101
-
- ISSN
- 13474073
- 00319015
-
- Data Source
-
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE