National Changhua University of Education Institutional Repository : Item 987654321/14169

English | 正體中文 | 简体中文 | Items with full text/Total items : 6507/11669
Visitors : 30062983 Online Users : 619

RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.

Scope Adv. Search

Login ‧ Upload ‧ Help ‧ About ‧ Administer

NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/14169

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14169

Title:	Order Parameter of MgB2: A Fully Gapped Superconductor
Authors:	Yang, H. D.;Lin, J. Y.;Li, H. H.;Hsu, F. H.;Liu, Chia-Jyi;Li, S. C.;Yu, R. C.;Jin, C. Q.
Contributors:	物理學系
Date:	2001-10
Issue Date:	2012-09-10T06:13:49Z
Publisher:	The American Physical Society
Abstract:	We have measured the low-temperature specific heat C(T) for polycrystalline MgB2 prepared by high pressure synthesis. C(T) below 10 K vanishes exponentially, which unambiguously indicates a fully opened superconducting energy gap. However, this gap is found to be too small to account for Tc of MgB2. Together with the small specific heat jump ΔC/γnTc = 1.09, scenarios such as anisotropic s-wave or multicomponent order parameter are called for. The magnetic field dependence of γ(H) is neither linear for a fully gapped s-wave superconductor nor H1/2 for nodal order parameter. It seems that this intriguing behavior of γ(H) is associated with the intrinsic electronic properties other than flux pinning.
Relation:	Phys. Rev. Lett., 87(16): 167003
Appears in Collections:	[Department of Physics] Periodical Articles

Files in This Item:

File	Size	Format
index.html	0Kb	HTML	728	View/Open