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Journal Articles

Field-induced antiferroquadrupolar order in the heavy fermion superconductor PrOs$$_4$$Sb$$_{12}$$

Kaneko, Koji; Metoki, Naoto; Matsuda, Tatsuma; Kuwahara, Keitaro*; Kogi, Masafumi*; Shiina, Ryosuke*; Mignot, J.-M.*; Gukasov, A.*; Bernhoeft, N.*

Physica B; Condensed Matter, 378-380, p.189 - 191, 2006/05

https://doi.org/10.1016/j.physb.2006.01.349
 Times Cited Count：1 Percentile：6.05(Physics, Condensed Matter)

Neutron diffraction experiments under magnetic fields were carried out on the heavy fermion superconductor PrOs$$_4$$Sb$$_{12}$$ in order to reveal the origin of the field-induced ordered phase (FIOP) for $$H$$$$Vert$$[1,1,0]. The application of magnetic field induces the weak superlattice peaks with the ordering vector $$q$$=(1,0,0) in FIOP, which is the same as for $$H{parallel}$$[0,0,1]. The observed superlattice reflections for $$H$$$$Vert$$[1,1,0] result from the antiferromagnetic component of $$J_x$$+$$J_y$$; the induced tiny antiferromagnetic moments orient parallel to the applied field. This result cannot be explained by magnetic interactions and strongly evidences the underlying AFQ order with $$O_{xy}$$ as a primary order parameter. These facts clarify the dominant role of $$O_{xy}$$-type antiferroquadrupolar interaction in PrOs$$_4$$Sb$$_{12}$$.

Journal Articles

Magnetic excitations in heavy-fermion superconductor PrOs$$_{4}$$Sb$$_{12}$$

Kuwahara, Keitaro*; Iwasa, Kazuaki*; Kogi, Masafumi*; Kaneko, Koji; Araki, Shingo; Metoki, Naoto; Sugawara, Hitoshi*; Aoki, Yuji*; Sato, Hideyuki*

Journal of the Physical Society of Japan, 73(6), p.1438 - 1441, 2004/06

https://doi.org/10.1143/JPSJ.73.1438
 Times Cited Count：64 Percentile：86.70(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Helimagnetic structure of YMn$$_{2}$$ observed by means of nuclear magnetic resonance and neutron diffraction

Nakamura, Hiroyuki*; Metoki, Naoto; Suzuki, Shigeya*; Takayanagi, Fumikazu*; Shiga, Masayuki*

Journal of Physics; Condensed Matter, 13(3), p.475 - 500, 2001/01

https://doi.org/10.1088/0953-8984/13/3/309
 Times Cited Count：19 Percentile：66.88(Physics, Condensed Matter)

no abstracts in English

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