- Tytuł:
- Electron Transport and Point Contact Spectroscopy of Cubic DyCu$\text{}_{5}$
- Autorzy:
-
Nenkov, K.
Idzikowski, B.
Ilkovic, S.
Kačmarčiková, E.
Reiffers, M.
Müller, K. - Powiązania:
- https://bibliotekanauki.pl/articles/2013688.pdf
- Data publikacji:
- 2000-05
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.20.Eh
72.15.Eb
73.23.Ad
73.40.Jn - Opis:
- The electron transport properties and point contact spectra of melt-spun DyCu$\text{}_{5}$ with the cubic phase (structure type AuBe$\text{}_{5}$, space group $F\overline{4}3m$) were investigated. It was found by ac-susceptibility measurements that below a transition temperature T$\text{}_{m}$=6.5 K this phase shows metamagnetism. Between T$\text{}_{m}$ and T$\text{}_{C}$=14.5 K a spontaneous magnetization is found. Our measurements of electrical resistivity confirm the existence of two magnetic phase transitions in the compound. Furthermore, we present point contact spectra of DyCu$\text{}_{5}$-Cu heterocontacts which are directly proportional to the electron-quasiparticle interaction function. Apart from a peak at about 18 meV, which is characteristic of electron-phonon interaction in pure Cu, we observed a series of additional maxima at lower energy, which are connected with the allowed 4f-transitions from the ground state to excited crystalline electric field levels.
- Źródło:
-
Acta Physica Polonica A; 2000, 97, 5; 843-846
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł