Ab initio investigations of the phonon anomaly and superconductivity in fcc La

Tütüncü, Hüseyin Murat

dc.contributor.authors	Tutuncu, HM; Srivastava, GP;
dc.date.accessioned	2020-01-20T08:01:56Z
dc.date.available	2020-01-20T08:01:56Z
dc.date.issued	2008
dc.identifier.citation	Tutuncu, HM; Srivastava, GP; (2008). Ab initio investigations of the phonon anomaly and superconductivity in fcc La. JOURNAL OF APPLIED PHYSICS, 104, -
dc.identifier.issn	0021-8979
dc.identifier.uri	https://hdl.handle.net/20.500.12619/31959
dc.identifier.uri	https://doi.org/10.1063/1.2981192
dc.description.abstract	We have employed the ab initio plane wave pseudopotential method within a generalized gradient approximation of the density functional theory and a linear response approach to investigate the phonon anomaly and superconductivity in fcc La. Our results confirm the presence of the experimentally observed softening behavior of the transverse acoustic branch along the [111] direction for both zero pressure. This behavior is found to be present even at a pressure of 50 kbar. With a reasonable choice of 0.1 for the Coulomb pseudopotential mu*, our estimate of the superconducting critical temperature of 6.44 K at zero pressure is in good agreement with the experimental value of 6.0 K. Our work further suggests that at 50 kbar the critical temperature will increase to 9.26 K. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2981192]
dc.language	English
dc.publisher	AMER INST PHYSICS
dc.subject	Physics
dc.title	Ab initio investigations of the phonon anomaly and superconductivity in fcc La
dc.type	Article
dc.identifier.volume	104
dc.contributor.department	Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü
dc.contributor.saüauthor	Tütüncü, Hüseyin Murat
dc.relation.journal	JOURNAL OF APPLIED PHYSICS
dc.identifier.wos	WOS:000260119300092
dc.identifier.doi	10.1063/1.2981192
dc.contributor.author	Tütüncü, Hüseyin Murat