Synthesis and properties of superconducting lanthanum sulfide films

A. D. Kent; B. Oh; T. H. Geballe; A. F. Marshall

doi:10.1016/0167-577X(87)90075-9

Synthesis and properties of superconducting lanthanum sulfide films

A. D. Kent, B. Oh, T. H. Geballe, A. F. Marshall

Research output: Contribution to journal › Article › peer-review

Abstract

We report the structural and transport properties of La-S films prepared by reactive planar magnetron sputtering. The La-S (Th₃P₄ cubic structure) can be prepared over a range of compositions with the electronic properties varying from a low electron density superconductor (T_c≈ 7 K) to a semiconductor which shows thermally activated transport at low temperature. This method of deposition produces small grained (≈ 200 Å) polycrystalline films whose composition can be varied continuously by tuning the deposition parameters. We discuss the TEM and X-ray data as well as the resistivity, Hall effect and superconducting properties of these films. We find that the superconducting transition temperature of the films is the same as that of bulk single crystals; however the mobility is a factor of 2 to 300 lower than that found in bulk specimens.

Original language	English (US)
Pages (from-to)	57-62
Number of pages	6
Journal	Materials Letters
Volume	5
Issue number	3
DOIs	https://doi.org/10.1016/0167-577X(87)90075-9
State	Published - Feb 1987

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/0167-577X(87)90075-9

Cite this

@article{1a0d991a5eed45d392aafaa394503f71,

title = "Synthesis and properties of superconducting lanthanum sulfide films",

abstract = "We report the structural and transport properties of La-S films prepared by reactive planar magnetron sputtering. The La-S (Th3P4 cubic structure) can be prepared over a range of compositions with the electronic properties varying from a low electron density superconductor (Tc≈ 7 K) to a semiconductor which shows thermally activated transport at low temperature. This method of deposition produces small grained (≈ 200 {\AA}) polycrystalline films whose composition can be varied continuously by tuning the deposition parameters. We discuss the TEM and X-ray data as well as the resistivity, Hall effect and superconducting properties of these films. We find that the superconducting transition temperature of the films is the same as that of bulk single crystals; however the mobility is a factor of 2 to 300 lower than that found in bulk specimens.",

author = "Kent, {A. D.} and B. Oh and Geballe, {T. H.} and Marshall, {A. F.}",

note = "Funding Information: The authorsw ouldl ike to acknowledgues efuld is-cussionsw ith Dr. A. Kapitulnik.T echnicalh elpand advicew asp rovidedb y D. Keith andB . Holmes.T his work was supportedb y the Air Force Office of Sci-entificR esearchu nder GranNto . F49620-83-C-0014. The TEM investigationa nd others amplec haracter-ization was supportedb y the Centerf or Materials Researchu ndert heS tanfordN SF-MRL program.",

year = "1987",

month = feb,

doi = "10.1016/0167-577X(87)90075-9",

language = "English (US)",

volume = "5",

pages = "57--62",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "3",

}

TY - JOUR

T1 - Synthesis and properties of superconducting lanthanum sulfide films

AU - Kent, A. D.

AU - Oh, B.

AU - Geballe, T. H.

AU - Marshall, A. F.

N1 - Funding Information: The authorsw ouldl ike to acknowledgues efuld is-cussionsw ith Dr. A. Kapitulnik.T echnicalh elpand advicew asp rovidedb y D. Keith andB . Holmes.T his work was supportedb y the Air Force Office of Sci-entificR esearchu nder GranNto . F49620-83-C-0014. The TEM investigationa nd others amplec haracter-ization was supportedb y the Centerf or Materials Researchu ndert heS tanfordN SF-MRL program.

PY - 1987/2

Y1 - 1987/2

N2 - We report the structural and transport properties of La-S films prepared by reactive planar magnetron sputtering. The La-S (Th3P4 cubic structure) can be prepared over a range of compositions with the electronic properties varying from a low electron density superconductor (Tc≈ 7 K) to a semiconductor which shows thermally activated transport at low temperature. This method of deposition produces small grained (≈ 200 Å) polycrystalline films whose composition can be varied continuously by tuning the deposition parameters. We discuss the TEM and X-ray data as well as the resistivity, Hall effect and superconducting properties of these films. We find that the superconducting transition temperature of the films is the same as that of bulk single crystals; however the mobility is a factor of 2 to 300 lower than that found in bulk specimens.

AB - We report the structural and transport properties of La-S films prepared by reactive planar magnetron sputtering. The La-S (Th3P4 cubic structure) can be prepared over a range of compositions with the electronic properties varying from a low electron density superconductor (Tc≈ 7 K) to a semiconductor which shows thermally activated transport at low temperature. This method of deposition produces small grained (≈ 200 Å) polycrystalline films whose composition can be varied continuously by tuning the deposition parameters. We discuss the TEM and X-ray data as well as the resistivity, Hall effect and superconducting properties of these films. We find that the superconducting transition temperature of the films is the same as that of bulk single crystals; however the mobility is a factor of 2 to 300 lower than that found in bulk specimens.

UR - http://www.scopus.com/inward/record.url?scp=0023294182&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023294182&partnerID=8YFLogxK

U2 - 10.1016/0167-577X(87)90075-9

DO - 10.1016/0167-577X(87)90075-9

M3 - Article

AN - SCOPUS:0023294182

SN - 0167-577X

VL - 5

SP - 57

EP - 62

JO - Materials Letters

JF - Materials Letters

IS - 3

ER -

Synthesis and properties of superconducting lanthanum sulfide films

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this