Spin valve effect and magnetoresistivity in single crystalline Ca3Ru2O7

Wei Bao, Z. Q. Mao, Z. Qu, J. W. Lynn

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of the huge magnetoresistive effect in the material has been controversial due to a lack of clear understanding of various magnetic phases and phase transitions. In this neutron diffraction study in a magnetic field, we identify four different magnetic phases in Ca3Ru2O7 and determine all first-order and second-order phase transitions between them. The spin-valve mechanism then readily explains the dominant magnetoresistive effect in Ca3Ru2O7.

Original languageEnglish (US)
Article number247203
JournalPhysical Review Letters
Volume100
Issue number24
DOIs
StatePublished - Jun 17 2008

Fingerprint

magnetoresistivity
neutron diffraction
superlattices
moments
magnetic fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

@article{13177cdfac36488fa51dca7daa28277a,
title = "Spin valve effect and magnetoresistivity in single crystalline Ca3Ru2O7",
abstract = "The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of the huge magnetoresistive effect in the material has been controversial due to a lack of clear understanding of various magnetic phases and phase transitions. In this neutron diffraction study in a magnetic field, we identify four different magnetic phases in Ca3Ru2O7 and determine all first-order and second-order phase transitions between them. The spin-valve mechanism then readily explains the dominant magnetoresistive effect in Ca3Ru2O7.",
author = "Wei Bao and Mao, {Z. Q.} and Z. Qu and Lynn, {J. W.}",
year = "2008",
month = "6",
day = "17",
doi = "10.1103/PhysRevLett.100.247203",
language = "English (US)",
volume = "100",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "24",

}

Spin valve effect and magnetoresistivity in single crystalline Ca3Ru2O7. / Bao, Wei; Mao, Z. Q.; Qu, Z.; Lynn, J. W.

In: Physical Review Letters, Vol. 100, No. 24, 247203, 17.06.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spin valve effect and magnetoresistivity in single crystalline Ca3Ru2O7

AU - Bao, Wei

AU - Mao, Z. Q.

AU - Qu, Z.

AU - Lynn, J. W.

PY - 2008/6/17

Y1 - 2008/6/17

N2 - The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of the huge magnetoresistive effect in the material has been controversial due to a lack of clear understanding of various magnetic phases and phase transitions. In this neutron diffraction study in a magnetic field, we identify four different magnetic phases in Ca3Ru2O7 and determine all first-order and second-order phase transitions between them. The spin-valve mechanism then readily explains the dominant magnetoresistive effect in Ca3Ru2O7.

AB - The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of the huge magnetoresistive effect in the material has been controversial due to a lack of clear understanding of various magnetic phases and phase transitions. In this neutron diffraction study in a magnetic field, we identify four different magnetic phases in Ca3Ru2O7 and determine all first-order and second-order phase transitions between them. The spin-valve mechanism then readily explains the dominant magnetoresistive effect in Ca3Ru2O7.

UR - http://www.scopus.com/inward/record.url?scp=45549099216&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45549099216&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.247203

DO - 10.1103/PhysRevLett.100.247203

M3 - Article

AN - SCOPUS:45549099216

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 24

M1 - 247203

ER -