Condensed-Matter Physics & Materials Science Seminar

"Coexistence of competing orders with two energy gaps in momentum and real space in high-Tc superconductor Bi2Sr2-xLaxCuO6+delta"

Presented by Zhihui Pan, Boston College

Friday, September 5, 2008, 10:00 am — Small Seminar Room, Bldg. 510

The superconducting phase of the high-Tc cuprates has been thought to be described by a single d-wave paring order parameter. Recently, there has been growing evidence suggesting that another form of order, possibly inherited from the pseudogap above Tc, may coexist with superconductivity in the underdoped regime. Through a combined study of angle-resolved photoemission spectroscopy and scanning tunneling microscopy, we observed two distinct gaps (a small-gap and a large gap) that coexist both in antinodal region and in real space in the superconducting phase of Bi2Sr2-xLaxCuO6+δ. We show that small-gap is associated with superconductivity and large-gap persists to temperature above Tc and is found to be linked to short-rage charge ordering. A strong, short-ranged correlation between the local small- and large-gap magnitudes suggesting that the superconductivity and charge ordering are driven by similar physical processes

Hosted by: Peter D. Johnson

4754  |  INT/EXT  |  Events Calendar

 

Not all computers/devices will add this event to your calendar automatically.

A calendar event file named "calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar.

Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the latest event information.