de Haas-van Alphen effect across the metamagnetic transition in Sr3Ru2O7

R A  Borzi; S A  Grigera; R S  Perry; N  Kikugawa; K  Kitagawa; Y  Maeno; A P  Mackenzie

doi:10.1103/PhysRevLett.92.216403

de Haas-van Alphen effect across the metamagnetic transition in Sr₃Ru₂O₇

R A Borzi, S A Grigera, R S Perry, N Kikugawa, K Kitagawa, Y Maeno, A P Mackenzie

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Abstract

We report a study of the de Haas-van Alphen (dHvA) effect on the itinerant metamagnet Sr₃Ru₂O₇. Extremely high sample purity allows the observation of dHvA oscillations both above and below the metamagnetic transition field of 7.9 T. The quasiparticle masses are fairly large away from the transition, and are enhanced by up to an extra factor of 3 as the transition is approached, but the Fermi surface topography change is quite small. The results are qualitatively consistent with a field-induced Stoner transition in which the mass enhancement is the result of critical fluctuations.

Original language	English
Pages (from-to)	216403
Number of pages	4
Journal	Physical Review Letters
Volume	92
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.92.216403
Publication status	Published - 28 May 2004

Keywords

FERMI-LIQUID BEHAVIOR
SUPERCONDUCTOR SR2RUO4
RUTHENATE SR3RU2O7
MAGNETIC-FIELD
CERU2SI2
INSTABILITY
ITINERANT
PRESSURE
ELECTRON
STATE

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10.1103/PhysRevLett.92.216403

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title = "de Haas-van Alphen effect across the metamagnetic transition in Sr3Ru2O7",

abstract = "We report a study of the de Haas-van Alphen (dHvA) effect on the itinerant metamagnet Sr3Ru2O7. Extremely high sample purity allows the observation of dHvA oscillations both above and below the metamagnetic transition field of 7.9 T. The quasiparticle masses are fairly large away from the transition, and are enhanced by up to an extra factor of 3 as the transition is approached, but the Fermi surface topography change is quite small. The results are qualitatively consistent with a field-induced Stoner transition in which the mass enhancement is the result of critical fluctuations.",

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author = "Borzi, {R A} and Grigera, {S A} and Perry, {R S} and N Kikugawa and K Kitagawa and Y Maeno and Mackenzie, {A P}",

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doi = "10.1103/PhysRevLett.92.216403",

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T1 - de Haas-van Alphen effect across the metamagnetic transition in Sr3Ru2O7

AU - Borzi, R A

AU - Grigera, S A

AU - Perry, R S

AU - Kikugawa, N

AU - Kitagawa, K

AU - Maeno, Y

AU - Mackenzie, A P

PY - 2004/5/28

Y1 - 2004/5/28

N2 - We report a study of the de Haas-van Alphen (dHvA) effect on the itinerant metamagnet Sr3Ru2O7. Extremely high sample purity allows the observation of dHvA oscillations both above and below the metamagnetic transition field of 7.9 T. The quasiparticle masses are fairly large away from the transition, and are enhanced by up to an extra factor of 3 as the transition is approached, but the Fermi surface topography change is quite small. The results are qualitatively consistent with a field-induced Stoner transition in which the mass enhancement is the result of critical fluctuations.

AB - We report a study of the de Haas-van Alphen (dHvA) effect on the itinerant metamagnet Sr3Ru2O7. Extremely high sample purity allows the observation of dHvA oscillations both above and below the metamagnetic transition field of 7.9 T. The quasiparticle masses are fairly large away from the transition, and are enhanced by up to an extra factor of 3 as the transition is approached, but the Fermi surface topography change is quite small. The results are qualitatively consistent with a field-induced Stoner transition in which the mass enhancement is the result of critical fluctuations.

KW - FERMI-LIQUID BEHAVIOR

KW - SUPERCONDUCTOR SR2RUO4

KW - RUTHENATE SR3RU2O7

KW - MAGNETIC-FIELD

KW - CERU2SI2

KW - INSTABILITY

KW - ITINERANT

KW - PRESSURE

KW - ELECTRON

KW - STATE

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DO - 10.1103/PhysRevLett.92.216403

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SP - 216403

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

de Haas-van Alphen effect across the metamagnetic transition in Sr₃Ru₂O₇

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Keywords

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