Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 73Ge-NMR/NQR Investigation of Magnetic Properties of URhGe   We report 73Ge-NMR and NQR results for ferromagnetic (FM) superconductor
URhGe. The magnitude and direction of the internal field, H_int, and parameters
of the electric field gradient at the Ge site were determined experimentally.
Using powdered polycrystalline samples oriented by different methods, the field
dependences of NMR shift and nuclear spin relaxation rates for H_0 // c (easy
axis) and H_0 // b were obtained. From the NMR shifts for H_0 // b, we
confirmed a gradual suppression of the Curie temperature and observed a phase
separation near the spin reorientation. The observation of the phase separation
gives microscopic evidence that the spin reorientation under H_0 // b is of
first order at low temperatures. The nuclear spin-lattice relaxation rate 1/T_1
indicates that the magnetic fluctuations are suppressed for H_0 // c, whereas
the fluctuations remain strongly for H_0 // b. The enhancements of both 1/T_1T
and the nuclear spin-spin relaxation rate 1/T_2 for H_0 // b toward the spin
reorientation field suggest that the field-induced superconductivity in URhGe
emerges under the magnetic fluctuations along the b axis and the c axis.

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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
28
The categories of this paper are: alg-geom