Journal article icon

Journal article

Large Anisotropic Thermal Expansion Anomaly near the Superconducting Transition Temperature in MgB2

Abstract:

An anisotropic lattice anomaly near the superconducting transition temperature, Tc, was observed in MgB2 by high-resolution neutron powder diffraction. The a-axis thermal expansion becomes negative near Tc, while the c-axis thermal expansion is unaffected. This is qualitatively consistent with a depletion of the boron-boron s-band as the superconducting gap opens, resulting in weaker bonding. However, the observed anomaly is much larger than predicted by the Ehrenfest relation, strongly sugge...

Expand abstract

Actions


Authors


Publication date:
2002-05-23
URN:
uuid:fe3f8a39-c982-45cb-a1c1-4aed5e2bec88
Source identifiers:
90415
Local pid:
pubs:90415
Keywords:

Terms of use


Metrics


Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP