Anisotropic dc magnetization of superconducting upt3and antiferromagnetic ordering below 20 mk

Stephan Schöttl; Erwin A. Schuberth; Karol Flachbart; Jan B. Kycia; J. I. Hong; D. N. Seidman; William P. Halperin; J. Hufnagl; Ernst Bucher

doi:10.1103/PhysRevLett.82.2378

Anisotropic dc magnetization of superconducting upt₃and antiferromagnetic ordering below 20 mk

Stephan Schöttl, Erwin A. Schuberth, Karol Flachbart, Jan B. Kycia, J. I. Hong, D. N. Seidman, William P. Halperin, J. Hufnagl, Ernst Bucher

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Abstract

We have measured the dc magnetization of three high-quality single crystals of UPt₃with a SQUID magnetometer down to ≈5 mK in magnetic fields below 2 mT. With B虀 in the ĉ direction we find a double superconducting transition, while for B虀||â we observe only one. At lower temperatures the temperature dependence of the magnetization follows power laws indicating unconventional behavior for the penetration depth. Below 20 mK a steep diamagnetic drop occurs, coinciding with the specific heat anomaly which we found earlier at 18 mK, pointing to static antiferromagnetic order.

Original language	English (US)
Pages (from-to)	2378-2381
Number of pages	4
Journal	Physical review letters
Volume	82
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.82.2378
State	Published - 1999

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.82.2378

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title = "Anisotropic dc magnetization of superconducting upt3and antiferromagnetic ordering below 20 mk",

abstract = "We have measured the dc magnetization of three high-quality single crystals of UPt3with a SQUID magnetometer down to ≈5 mK in magnetic fields below 2 mT. With B虀 in the ĉ direction we find a double superconducting transition, while for B虀||{\^a} we observe only one. At lower temperatures the temperature dependence of the magnetization follows power laws indicating unconventional behavior for the penetration depth. Below 20 mK a steep diamagnetic drop occurs, coinciding with the specific heat anomaly which we found earlier at 18 mK, pointing to static antiferromagnetic order.",

author = "Stephan Sch{\"o}ttl and Schuberth, {Erwin A.} and Karol Flachbart and Kycia, {Jan B.} and Hong, {J. I.} and Seidman, {D. N.} and Halperin, {William P.} and J. Hufnagl and Ernst Bucher",

year = "1999",

doi = "10.1103/PhysRevLett.82.2378",

language = "English (US)",

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T1 - Anisotropic dc magnetization of superconducting upt3and antiferromagnetic ordering below 20 mk

AU - Schöttl, Stephan

AU - Schuberth, Erwin A.

AU - Flachbart, Karol

AU - Kycia, Jan B.

AU - Hong, J. I.

AU - Seidman, D. N.

AU - Halperin, William P.

AU - Hufnagl, J.

AU - Bucher, Ernst

PY - 1999

Y1 - 1999

N2 - We have measured the dc magnetization of three high-quality single crystals of UPt3with a SQUID magnetometer down to ≈5 mK in magnetic fields below 2 mT. With B虀 in the ĉ direction we find a double superconducting transition, while for B虀||â we observe only one. At lower temperatures the temperature dependence of the magnetization follows power laws indicating unconventional behavior for the penetration depth. Below 20 mK a steep diamagnetic drop occurs, coinciding with the specific heat anomaly which we found earlier at 18 mK, pointing to static antiferromagnetic order.

AB - We have measured the dc magnetization of three high-quality single crystals of UPt3with a SQUID magnetometer down to ≈5 mK in magnetic fields below 2 mT. With B虀 in the ĉ direction we find a double superconducting transition, while for B虀||â we observe only one. At lower temperatures the temperature dependence of the magnetization follows power laws indicating unconventional behavior for the penetration depth. Below 20 mK a steep diamagnetic drop occurs, coinciding with the specific heat anomaly which we found earlier at 18 mK, pointing to static antiferromagnetic order.

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JO - Physical review letters

JF - Physical review letters

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ER -

Anisotropic dc magnetization of superconducting upt₃and antiferromagnetic ordering below 20 mk

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