The penetration depth of HgBa{sub 2}CuO{sub 4+{delta}} with 0.07 {le} {delta} {le} 0.35

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · Journal of Superconductivity

DOI:https://doi.org/10.1007/BF00722831· OSTI ID:136195

Xue, Y Y; Cao, Y; Chu, C W ^[1]

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1. Univ. of Houston, TX (United States); and others

The magnetic penetration depth {lambda}(T) of three HgBa{sub 2}CuO{sub 4+{delta}} samples with 0.16 {le} {delta} {le} 0.27 has been determined from the reversible magnetization. The obtained {lambda} follows a BCS-like correlation of 1/{lambda}{sub 2} {proportional_to} 1-{minus}(T/T{sub c}){sup 2} over whole measured temperature range in an underdoped sample with T{sub c} {approximately} 90 K, but deviates significantly from similar fits in an overdoped sample with the same T{sub c} and an optimum doped sample, whose 1/{lambda}{sup 2}`s depends on T nearly linearly below T{sub c}/2. This asymmetry between the underdoped and overdoped samples suggests that the T-dependence of 1/{lambda}{sup 2} is affected by doping in a complicated way.

• Sponsoring Organization: USDOE
• OSTI ID: 136195
• Report Number(s): CONF-950144--; CNN: Grant DMR 91-22043; Grant F49620-93-1-0310
• Journal Information: Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 4 Vol. 8; ISSN 0896-1107; ISSN JOUSEH
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
MERCURY OXIDES
OXYGEN
PENETRATION DEPTH
STOICHIOMETRY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K