NSF Org:	DMR Division Of Materials Research
Recipient:	RUTGERS, THE STATE UNIVERSITY
Initial Amendment Date:	June 20, 1994
Latest Amendment Date:	May 2, 1997
Award Number:	9401561
Award Instrument:	Continuing Grant
Program Manager:	H. Hollis Wickman DMR  Division Of Materials Research MPS  Directorate for Mathematical and Physical Sciences
Start Date:	July 1, 1994
End Date:	October 31, 1997 (Estimated)
Total Intended Award Amount:	$310,000.00
Total Awarded Amount to Date:	$310,000.00
Funds Obligated to Date:	FY 1994 = $100,000.00 FY 1995 = $100,000.00 FY 1996 = $105,000.00 FY 1997 = $5,000.00
History of Investigator:	Eva Andrei (Principal Investigator) eandrei@physics.rutgers.edu
Recipient Sponsored Research Office:	Rutgers University New Brunswick 3 RUTGERS PLZ NEW BRUNSWICK NJ  US  08901-8559 (848)932-0150
Sponsor Congressional District:	12
Primary Place of Performance:	Rutgers University New Brunswick 3 RUTGERS PLZ NEW BRUNSWICK NJ  US  08901-8559
Primary Place of Performance Congressional District:	12
Unique Entity Identifier (UEI):	M1LVPE5GLSD9
Parent UEI:
NSF Program(s):	CONDENSED MATTER PHYSICS
Primary Program Source:	app-0194  app-0195  app-0196  app-0197
Program Reference Code(s):	1764, 9161, 9251, AMPP
Program Element Code(s):	171000
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.049

ABSTRACT

9401561 Andrei Technical abstract: Electrons on a helium substrate form a two dimensional electron system. This system will be investigated in a region of the phase diagram where correlations between electrons determine the in-plane and out-of-plane dynamics. The experiments focus on (a) the phase boundary of the electron crystal and how it is affected by screening; (b) the interplay between the electron crystal and Landau quantization in the presence of a perpendicular magnetic field; (c) the effects of crystal correlations on tunneling; (d) the effect of the Landau quantization on magneto-tunneling rates. Non-technical abstract: Electrons captured on a thin layer of helium at very low temperatures form a two dimensional system which can serve as a prototype system for the study of electron states in more conventional states of condensed matter. The key task required for realizing a case in which very many electrons are clustered on the helium film is to reduce significantly the impurities and roughness of the underlying solid on which the helium film is deposited. This project will focus on utilizing ultra clean and ultra smooth solid substrates in order to achieve such a high density of electrons which has not been previously achieved. This high electron density will allow search of as yet undiscovered effects which will be important to the electron on helium problem in particular, but also to other two dimensional electron systems in general. ***

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