Structure, magnetization, specific heat, and microwave properties of KxFe2-ySe2
Yükleniyor...
Dosyalar
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IOP Publishing Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Temperature-dependent magnetization, specific heat, and magnetic field modulated microwave spectroscopy (MFMMS) measurements were performed on single crystals of KxFe2-ySe2. Magnetization measurements yield a superconducting transition temperature (T-c) of similar to 30 K, with a diamagnetic shielding fraction of nearly 90%. Specific heat measurements revealed a 'jump' at T-c, Delta C/T vertical bar T-c, of about 6.8 +/- 1 mJ mol(-1) K-2, consistent with bulk superconductivity in KxFe2-ySe2. Moreover, MFMMS measurements detect the superconductivity of KxFe2-ySe2. with a peak with an onset at T-c(mu) similar to 28 K, close to the values of T-c determined from the magnetization and specific heat measurements. The presence and the shape of the low temperature MFMMS signal could be ascribed to a complex dissipation mechanism and percolative superconductivity.
Açıklama
Anahtar Kelimeler
Superconductivity, Microwave properties, Specific heat
Kaynak
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
29
Sayı
8
Künye
Yazıcı, D., Başaran, A. C.,Ramirez, Juan G., Schuller, I. K. Maple, M. B. (2016). Structure, magnetization, specific heat, and microwave properties of Kx Fe2–ySe2. Supercond. Sci. Technol, 29 (8), 085015.
