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# Takeshi Egami <egami@utk.edu>
# requesting 6 days, at minimum=5 days
# beamline 33ID, Diffuse scattering from cuprate superconductor
# instrument 33ID-D kappa
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# top:/home/www/beamtime-requests/req01011.txt
# UNICAT Member Beam Time Request  #1011
# created Tue Jul 25 01:29:07 CDT 2006
####################################################

apsrun:
	2006-02

beamline:
	33ID

collaboration:
	No

collaborator_Paul:
	ON

contact:
	egami@utk.edu

days:
	6

description:
	We will continue the work on YBCO1248 to search the superlattice diffraction.  In the last cycle we have already found two kinds of diffuse peaks, (pi/2, pi/2, 0) and (pi, pi).  We will study the temperature dependence to confirm that these diffuse peaks are related to the pseudogap.  This work relates to the subject of intermediate phase in doped Mott-insulator, currently a very hot subject.  The stripe state has long been known to be such an intermediate state, but the recent data are against the presence of the stripe state in strongly superconducting state.  The proposed new intermediate state is more consistent with the recent ARPES data, and has a chance of explaining the pseudogap state of the cuprate, hence the origin of the superconductivity.  The measurement requires the kapper goniometer and a cryostat.

equipment_required:
	displex

experiment:
	Diffuse scattering from cuprate superconductor

foreign_nationals:
	Konstantin Lokshin, Ferenc Stercel, Zsolt Marton

hazards:
	No hazard expected.

instrument:
	33ID-D kappa

instrument_other:
	

minimumdays:
	5

name:
	Takeshi Egami

nonmembers:
	

submit:
	Submit

unacceptable_dates:
	

z34ID_details:
	


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