Superconductivity, Weak Itinerant Ferromagnetism and Electronic Band Structure of Y_9Co_7

• Authors: A. Kołodziejczyk , B. Wiendlocha , R. Zalecki , J. Toboła , S. Kaprzyk
• Languages of publication: EN

Abstracts

EN

The paper presents experimental results for the intermetallic compound Y_9Co_7 which is the first very weak itinerant ferromagnetic superconductor. The measurements of electrical resistivity, susceptibility, magnetization, specific heat, nuclear magnetic resonance, and other properties show the magnetic transition at T_C≈ 4.5 K and the onset of superconductivity at about T_S≈ 2.5 K, revealing the coexistence state within a temperature interval below T_S. A few of the results are shortly reviewed and discussed. We focus attention on our recent ultraviolet photoemission spectroscopy and their comparison with our band structure calculations. Interpretations are considered which take into account the characteristic structure of the compound and different possible types of magnetic ordering.

Keywords

EN

74.25.Jb; 74.25.Ha; 74.20.Mn

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.20.Mn: Nonconventional mechanisms
• 74.25.Jb: Electronic structure (photoemission, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 4
• Pages: 513-526

Dates

published

2007-04

received

2006-09-14

Contributors

author

A. Kołodziejczyk

• Department of Solid State Physics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

author

B. Wiendlocha

• Department of Condensed Matter Physics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

author

R. Zalecki

• Department of Solid State Physics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

author

J. Toboła

• Department of Condensed Matter Physics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

author

S. Kaprzyk

• Department of Condensed Matter Physics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

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Identifiers

DOI

10.12693/APhysPolA.111.513