Competing magnetic fluctuations in Sr3 Ru2 O7 probed by Ti doping

J. Hooper; M. H. Fang; M. Zhou; D. Fobes; N. Dang; Z. Q. Mao; C. M. Feng; Z. A. Xu; M. H. Yu; C. J. O'Connor; G. J. Xu; N. Andersen; M. Salamon

doi:10.1103/PhysRevB.75.060403

Competing magnetic fluctuations in Sr3 Ru2 O7 probed by Ti doping

J. Hooper, M. H. Fang, M. Zhou, D. Fobes, N. Dang, Z. Q. Mao, C. M. Feng, Z. A. Xu, M. H. Yu, C. J. O'Connor, G. J. Xu, N. Andersen, M. Salamon

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13 Scopus citations

Abstract

We report the effect of nonmagnetic Ti4+ impurities on the electronic and magnetic properties of Sr3 Ru2 O7. Small amounts of Ti suppress the characteristic peak in magnetic susceptibility near 16 K and result in a sharp upturn in specific heat. The metamagnetic quantum phase transition and related anomalous features are quickly smeared out by small amounts of Ti. These results provide strong evidence for the existence of competing magnetic fluctuations in the ground state of Sr3 Ru2 O7. Ti doping suppresses the low-temperature antiferromagnetic interactions that arise from Fermi surface nesting, leaving the system in a state dominated by ferromagnetic fluctuations.

Original language	English (US)
Article number	060403
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.75.060403
State	Published - Feb 7 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.75.060403

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title = "Competing magnetic fluctuations in Sr3 Ru2 O7 probed by Ti doping",

abstract = "We report the effect of nonmagnetic Ti4+ impurities on the electronic and magnetic properties of Sr3 Ru2 O7. Small amounts of Ti suppress the characteristic peak in magnetic susceptibility near 16 K and result in a sharp upturn in specific heat. The metamagnetic quantum phase transition and related anomalous features are quickly smeared out by small amounts of Ti. These results provide strong evidence for the existence of competing magnetic fluctuations in the ground state of Sr3 Ru2 O7. Ti doping suppresses the low-temperature antiferromagnetic interactions that arise from Fermi surface nesting, leaving the system in a state dominated by ferromagnetic fluctuations.",

author = "J. Hooper and Fang, {M. H.} and M. Zhou and D. Fobes and N. Dang and Mao, {Z. Q.} and Feng, {C. M.} and Xu, {Z. A.} and Yu, {M. H.} and O'Connor, {C. J.} and Xu, {G. J.} and N. Andersen and M. Salamon",

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doi = "10.1103/PhysRevB.75.060403",

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T1 - Competing magnetic fluctuations in Sr3 Ru2 O7 probed by Ti doping

AU - Hooper, J.

AU - Fang, M. H.

AU - Zhou, M.

AU - Fobes, D.

AU - Dang, N.

AU - Mao, Z. Q.

AU - Feng, C. M.

AU - Xu, Z. A.

AU - Yu, M. H.

AU - O'Connor, C. J.

AU - Xu, G. J.

AU - Andersen, N.

AU - Salamon, M.

PY - 2007/2/7

Y1 - 2007/2/7

N2 - We report the effect of nonmagnetic Ti4+ impurities on the electronic and magnetic properties of Sr3 Ru2 O7. Small amounts of Ti suppress the characteristic peak in magnetic susceptibility near 16 K and result in a sharp upturn in specific heat. The metamagnetic quantum phase transition and related anomalous features are quickly smeared out by small amounts of Ti. These results provide strong evidence for the existence of competing magnetic fluctuations in the ground state of Sr3 Ru2 O7. Ti doping suppresses the low-temperature antiferromagnetic interactions that arise from Fermi surface nesting, leaving the system in a state dominated by ferromagnetic fluctuations.

AB - We report the effect of nonmagnetic Ti4+ impurities on the electronic and magnetic properties of Sr3 Ru2 O7. Small amounts of Ti suppress the characteristic peak in magnetic susceptibility near 16 K and result in a sharp upturn in specific heat. The metamagnetic quantum phase transition and related anomalous features are quickly smeared out by small amounts of Ti. These results provide strong evidence for the existence of competing magnetic fluctuations in the ground state of Sr3 Ru2 O7. Ti doping suppresses the low-temperature antiferromagnetic interactions that arise from Fermi surface nesting, leaving the system in a state dominated by ferromagnetic fluctuations.

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DO - 10.1103/PhysRevB.75.060403

M3 - Article

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 060403

ER -

Competing magnetic fluctuations in Sr3 Ru2 O7 probed by Ti doping

Abstract

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