skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Experimental studies in solid state and low temperture physics. Progress report for 1977

Abstract

Experimental investigations are being carried out in a broad area of low-temperature and solid-state physics which includes superconductivity, magnetism in metals and liquid and solid helium. The pair-field susceptibility of superconductors is being studied. A propagating mode in the phase of the superconducting order parameter is under investigation. Superconducting fluctuations are being used to probe critical fluctuations in magnetic systems using the proximity effect. Heat capacities of superconducting films in the vicinity of T/sub c/ are also being investigated. The properties of thin film solid solutions of sodium in ammonia, sodium in argon, and mercury in xenon are being studied. Nuclear orientation studies of the dilute magnetic impurity problem in metals in the 1 mK temperature region are being carried out. Refrigeration requirements for this work are being met using enhanced hyperfine nuclear cooling. The dynamics of superfluid flow through submicrometer pores are being studied in both pure /sup 4/He and in /sup 3/He//sup 4/He mixtures in an apparatus provided with a /sup 3/He refrigerator. A search for an ac Josephson effect in superfluid /sup 4/He is being initiated. The quantization of circulation in superfluid liquid /sup 4/He is being investigated using the Vinen method. An analysis of measurements ofmore » the concentration susceptibility in /sup 3/He//sup 4/He mixtures near the tricritical point has been completed. The electrical resistance of metallic screw-fastened joints is being studied to assess the usefulness of such demountable joints for thermal contact at millikelvin temperatures.« less

Authors:
; ;
Publication Date:
Research Org.:
Minnesota Univ., Minneapolis (USA). School of Physics
Sponsoring Org.:
US Energy Research and Development Administration (ERDA)
OSTI Identifier:
5367435
Report Number(s):
COO-1569-144
TRN: 78-003026
DOE Contract Number:  
EY-76-S-02-1569
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; SOLID STATE PHYSICS; RESEARCH PROGRAMS; HELIUM; HELIUM 3; HELIUM 4; LIQUIDS; MAGNETISM; MERCURY; MIXTURES; ORDER PARAMETERS; PROXIMITY EFFECT; SODIUM; SOLIDS; SPECIFIC HEAT; SUPERCONDUCTING FILMS; SUPERCONDUCTIVITY; SUPERFLUIDITY; ULTRALOW TEMPERATURE; ALKALI METALS; CRYOGENIC FLUIDS; DISPERSIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FILMS; FLUIDS; HELIUM ISOTOPES; ISOTOPES; LIGHT NUCLEI; METALS; NONMETALS; NUCLEI; PHYSICAL PROPERTIES; PHYSICS; RARE GASES; STABLE ISOTOPES; THERMODYNAMIC PROPERTIES; 656000* - Condensed Matter Physics; 640450 - Fluid Physics- Superfluidity; 640460 - Fluid Physics- Other Quantum Fluids; 656102 - Solid State Physics- Superconductivity- Acoustic, Electronic, Magnetic, Optical, & Thermal Phenomena- (-1987)

Citation Formats

Goldman, A. M., Weyhmann, W. V., and Zimmermann, W. Jr. Experimental studies in solid state and low temperture physics. Progress report for 1977. United States: N. p., 1977. Web. doi:10.2172/5367435.
Goldman, A. M., Weyhmann, W. V., & Zimmermann, W. Jr. Experimental studies in solid state and low temperture physics. Progress report for 1977. United States. https://doi.org/10.2172/5367435
Goldman, A. M., Weyhmann, W. V., and Zimmermann, W. Jr. 1977. "Experimental studies in solid state and low temperture physics. Progress report for 1977". United States. https://doi.org/10.2172/5367435. https://www.osti.gov/servlets/purl/5367435.
@article{osti_5367435,
title = {Experimental studies in solid state and low temperture physics. Progress report for 1977},
author = {Goldman, A. M. and Weyhmann, W. V. and Zimmermann, W. Jr.},
abstractNote = {Experimental investigations are being carried out in a broad area of low-temperature and solid-state physics which includes superconductivity, magnetism in metals and liquid and solid helium. The pair-field susceptibility of superconductors is being studied. A propagating mode in the phase of the superconducting order parameter is under investigation. Superconducting fluctuations are being used to probe critical fluctuations in magnetic systems using the proximity effect. Heat capacities of superconducting films in the vicinity of T/sub c/ are also being investigated. The properties of thin film solid solutions of sodium in ammonia, sodium in argon, and mercury in xenon are being studied. Nuclear orientation studies of the dilute magnetic impurity problem in metals in the 1 mK temperature region are being carried out. Refrigeration requirements for this work are being met using enhanced hyperfine nuclear cooling. The dynamics of superfluid flow through submicrometer pores are being studied in both pure /sup 4/He and in /sup 3/He//sup 4/He mixtures in an apparatus provided with a /sup 3/He refrigerator. A search for an ac Josephson effect in superfluid /sup 4/He is being initiated. The quantization of circulation in superfluid liquid /sup 4/He is being investigated using the Vinen method. An analysis of measurements of the concentration susceptibility in /sup 3/He//sup 4/He mixtures near the tricritical point has been completed. The electrical resistance of metallic screw-fastened joints is being studied to assess the usefulness of such demountable joints for thermal contact at millikelvin temperatures.},
doi = {10.2172/5367435},
url = {https://www.osti.gov/biblio/5367435}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {9}
}