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# Takeshi Egami <egami@utk.edu>
# requesting 7 days days, at minimum=5 days days
# beamline 33ID, Diffuse scattering from superconducting cuprate
# instrument 33ID-D kappa
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# top:/home/www/beamtime-requests/req00615.txt
# UNICAT Member Beam Time Request  #615
# created Fri Apr 23 14:16:02 CDT 2004
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beamline:
	33ID

collaboration:
	Yes

collaborator_Hawoong:
	ON

collaborator_Paul:
	ON

collaborator_Pete:
	ON

contact:
	egami@utk.edu

days:
	7 days

description:
	Diffuse scattering from superconducting YBa2Cu4O8 (1248) single crystal will be studied.  Recent diffuse scattering studies on YBa2Cu3O7 (123) system showed the presence of diffuse scattering at low temperatures that could be related to charge density waves.  In 123, however, oxygen ordering makes the analysis very difficult.  We have a single crystal of 1248 synthesised at high oxygen pressure that has no oxygen vacancy, and thus is ideally suited for this study. This measurement will determine the presence/absense of local charge inhomogeneity in the cuprates. The measurement will be done at various temperatures.

equipment_required:
	Displex, Ge detector

experiment:
	Diffuse scattering from superconducting cuprate

foreign_nationals:
	Ferenc Stercel
Cinzia Metallo
Jin Nakamura

hazards:
	No hazard expected.

instrument:
	33ID-D kappa

instrument_other:
	

minimumdays:
	5 days

name:
	Takeshi Egami

nonmembers:
	Ferenc Stercel
Cinzia Metallo
Jin Nakamura

unacceptable_dates:
	June 10-16
July 10-24
Aug 15-25

z34ID_details:
	


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