JAEA
  • help
  • PC | SP
  • JP | EN
          
Refine your search：     
Report No.
 - 
Clear All
Search Results: Records 1-5 displayed on this page of 5
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Band structures of CeRu$$_2$$(Si$$_{1-x}$$Ge$$_{x}$$)$$_2$$ studied by resonant soft X-ray ARPES

Okane, Tetsuo; Okochi, Takuo*; Takeda, Yukiharu; Fujimori, Shinichi; Yasui, Akira; Saito, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Matsumoto, Yuji*; Sugi, Motoki*; et al.

Physica Status Solidi (B), 247(3), p.397 - 399, 2010/03

Journal Articles

Fermi surface properties of YbCu$$_2$$Si$$_2$$

Matsuda, Tatsuma; Dung, N. D.*; Haga, Yoshinori; Ikeda, Shugo*; Yamamoto, Etsuji; Ishikura, Tatsuro*; Endo, Toyoaki*; Takeuchi, Tetsuya*; Settai, Rikio*; Onuki, Yoshichika

Physica Status Solidi (B), 247(3), p.757 - 759, 2010/03

https://doi.org/10.1002/pssb.200983027
 Times Cited Count：2 Percentile：12.12(Physics, Condensed Matter)

We succeeded in growing high-quality single crystals of a heavy electron compound YbCu$$_2$$Si$$_2$$. The electronic specific heat coefficient $$gamma$$ is determined to be 150 mJ/K$$^2cdot$$mol, which is consistent with the $$A$$ value of the electrical resistivity from Kadowaki-Woods relation. We succeeded in observing the de Haas-van Alphen (dHvA) oscillations. The dHvA frequencies and large cyclotron effective masses in YbCu$$_2$$Si$$_2$$ are highly different from those in a non-4$$f$$ reference compound YCu$$_2$$Si$$_2$$. From these dHvA results, the heavy electron state of YbCu$$_2$$Si$$_2$$ is characterized by the large contribution of 4$$f$$-electrons to the volume of the Fermi surface and also to the strong enhancement of effective mass caused by the spin fluctuations.

Journal Articles

Field-induced nematic phase in the spin ladder system with easy-axis anisotropy

Sakai, Toru; Tonegawa, Takashi*; Okamoto, Kiyomi*

Physica Status Solidi (B), 247(3), p.583 - 585, 2010/03

https://doi.org/10.1002/pssb.200983025
 Times Cited Count：4 Percentile：21.96(Physics, Condensed Matter)

The spin ladder system with the easy-axis anisotropy in magnetic field is theoretically investigated using the numerically exact diagonalization, the density matrix renormalization group (DMRG) and the finite-size scaling analysis. It is found that the field-induced nematic phase appears above the critical field. In addition, there exists another critical field at which the quantum phase transition from the nematic phase to the conventional field-induced Tomonaga- Luttinger liquid phase occurs. The phase diagram on the coupling anisotropy versus magnetization plane is given by the numerical diagonalization. Furthermore, a typical magnetization curve calculated by the DMRG is presented.

Journal Articles

Diagnosis of quantum criticality by nuclear spin-echo decay method

Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Chudo, Hiroyuki; Walstedt, R. E.*

Physica Status Solidi (B), 247(3), p.520 - 524, 2010/03

https://doi.org/10.1002/pssb.200983063
 Times Cited Count：2 Percentile：12.12(Physics, Condensed Matter)

In order to diagnose the quantum critical behaviour in heavy fermion systems, the Gaussian spin-spin relaxation time $$T_{2G}$$ determined by NMR spin-echo decay measurements is found to be useful. Combined with the spin-lattice relaxation time $$T_1$$, an exponent $$phi$$ of quantity $$T_1T/T_{2G}^2 sim T^{phi}$$ is predicted to be sensitive to the type of quantum criticality. In fact in heavy fermion USn$$_3$$ near the quantum critical point, $$T_1T/T_{2G}^2$$ is found to be constant as expected for the $$3D$$-SDW magnetic instability.

Oral presentation

Effect of magnetic field on antiferromagnetism in non-centrosymmetric heavy-fermion superconductor CePt$$_3$$Si

Kaneko, Koji; Stockert, O.*; Arndt, J.*; Borth, R.*; Skoulatos, M.*; Habicht, K.*; Kiefer, K.*; Schneidewind, A.*; Etzdorf, D.*; Takeuchi, Tetsuya*; et al.

no journal, , 

5 (Records 1-5 displayed on this page)
  • 1