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Spin-wave excitations and superconducting resonant mode in Cs(x)Fe(2-y)Se2

Abstract:

We report neutron inelastic scattering measurements on the normal and superconducting states of single-crystalline Cs0.8Fe1.9Se2. Consistent with previous measurements on Rb(x)Fe(2-y)Se2, we observe two distinct spin excitation signals: (i) spin-wave excitations characteristic of the block antiferromagnetic order found in insulating A(x)Fe(2-y)Se2 compounds, and (ii) a resonance-like magnetic peak localized in energy at 11 meV and at an in-plane wave vector of (0.25, 0.5). The resonance peak ...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.86.094528

Authors


Journal:
Phys. Rev. B More from this journal
Volume:
86
Issue:
9
Pages:
094528
Publication date:
2012-08-17
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Language:
English
Keywords:
Pubs id:
pubs:354750
UUID:
uuid:a93390ed-7c76-4754-880d-070d880fe47d
Local pid:
pubs:354750
Source identifiers:
354750
Deposit date:
2013-11-16

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