Low-temperature Hall effect in substituted Sr2RuO4

N  Kikugawa; A P  Mackenzie; C  Bergemann; Y  Maeno

doi:10.1103/PhysRevB.70.174501

Low-temperature Hall effect in substituted Sr₂RuO₄

N Kikugawa, A P Mackenzie, C Bergemann, Y Maeno

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9 Citations (Scopus)

Abstract

We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr₂RuO₄ in which Sr²⁺ has been substituted by La³⁺ (Sr_2-yLa_yRuO₄) or Ru⁴⁺ by Ti⁴⁺ (Sr₂Ru_1-xTi_xO₄). For undoped Sr₂RuO₄, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4 T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at ysimilar to0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.

Original language	English
Pages (from-to)	174501
Number of pages	5
Journal	Physical Review. B, Condensed matter and materials physics
Volume	70
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.70.174501
Publication status	Published - Nov 2004

Keywords

SUPERCONDUCTOR SR2RUO4
LAYERED PEROVSKITE
TRIPLET
HEAVY
FIELD
METAL

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10.1103/PhysRevB.70.174501

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title = "Low-temperature Hall effect in substituted Sr2RuO4",

abstract = "We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr2RuO4 in which Sr2+ has been substituted by La3+ (Sr2-yLayRuO4) or Ru4+ by Ti4+ (Sr2Ru1-xTixO4). For undoped Sr2RuO4, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4 T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at ysimilar to0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.",

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doi = "10.1103/PhysRevB.70.174501",

language = "English",

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TY - JOUR

T1 - Low-temperature Hall effect in substituted Sr2RuO4

AU - Kikugawa, N

AU - Mackenzie, A P

AU - Bergemann, C

AU - Maeno, Y

PY - 2004/11

Y1 - 2004/11

N2 - We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr2RuO4 in which Sr2+ has been substituted by La3+ (Sr2-yLayRuO4) or Ru4+ by Ti4+ (Sr2Ru1-xTixO4). For undoped Sr2RuO4, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4 T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at ysimilar to0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.

AB - We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr2RuO4 in which Sr2+ has been substituted by La3+ (Sr2-yLayRuO4) or Ru4+ by Ti4+ (Sr2Ru1-xTixO4). For undoped Sr2RuO4, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4 T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at ysimilar to0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.

KW - SUPERCONDUCTOR SR2RUO4

KW - LAYERED PEROVSKITE

KW - TRIPLET

KW - HEAVY

KW - FIELD

KW - METAL

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UR - http://link.aps.org/abstract/PRB/v70/e174501

U2 - 10.1103/PhysRevB.70.174501

DO - 10.1103/PhysRevB.70.174501

M3 - Article

SN - 1098-0121

VL - 70

SP - 174501

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 17

ER -

Low-temperature Hall effect in substituted Sr₂RuO₄

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