| Autor: |
Simutis, G., Gvasaliya, S., Beesetty, N. S., Yoshida, T., Robert, J., Petit, S., Kolesnikov, A. I., Stone, M. B., Bourdarot, F., Walker, H. C., Adroja, D. T., Sobolev, O., Hess, C., Masuda, T., Revcolevschi, A., Büchner, B., Zheludev, A. |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
PRB 95, 054409 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.95.054409 |
| Popis: |
The low energy magnetic excitation spectrum of the Heisenberg antiferromagnetic $S = 1/2$ chain system Sr$_2$CuO$_3$ with Ni- and Ca-impurities is studied by neutron spectroscopy. In all cases, a defect-induced spectral pseudogap is observed and shown to scale proportionately to the number of scattering centers in the spin chains. |
| Databáze: |
arXiv |
| Externí odkaz: |
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