Magnetic excitation of TmTe in the anomalous metallic state under high pressure

✍ Scribed by T. Matsumura; H. Ishida; M. Nishi

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 142 KB
• Volume: 385-386
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.05.050

✦ Synopsis

The magnetic excitation spectrum of TmTe before and after the insulator-to-metal transition under high pressure has been studied by inelastic neutron scattering. Below the critical pressure of about 2 GPa, there seems to be no qualitative difference in comparison with the spectrum at P ¼ 0. In contrast, in the ferromagnetic anomalous metallic state above the critical pressure, an inelastic peak appears at 9 meV as in TmSe at P ¼ 0. The 9 meV excitation is considered to be a characteristic of the valence fluctuating ground state in Tm monochalcogenides, where both valence states are magnetic.