Raman scattering studies of field-induced melting of the orbital-ordered state of Ca3Ru2O7

J. F. Karpus; R. Gupta; H. Barath; S. L. Cooper; G. Cao

doi:10.1016/j.physb.2005.01.368

Raman scattering studies of field-induced melting of the orbital-ordered state of Ca₃Ru₂O₇

J. F. Karpus, R. Gupta, H. Barath, S. L. Cooper, G. Cao

Research output: Contribution to journal › Article › peer-review

Abstract

We present field- and temperature-dependent Raman scattering results from Ca₃Ru₂O₇ for applied field orientation H _o∥(hard) b-axis. Our study reveals a field-induced orbital-ordered (OO) to orbital-disordered (OD) quantum phase transition, which is instigated in part by the strong spin-orbit coupling in this material. This study shows that dramatic magnetic field effects are most prevalent in a regime characterized by "mixed" magnetic and orbital phases (OD), providing further evidence for the strong connection between intrinsic phase inhomogeneity and "colossal" behavior in complex materials.

Original language	English (US)
Pages (from-to)	1234-1236
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.368
State	Published - Apr 30 2005

Keywords

Orbital ordering
Raman scattering
Ruthenates

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Online availability

10.1016/j.physb.2005.01.368

Library availability

Discover UIUC Full Text

Cite this

@article{85af159597c94fe4b5c2220617b249d4,

title = "Raman scattering studies of field-induced melting of the orbital-ordered state of Ca3Ru2O7",

abstract = "We present field- and temperature-dependent Raman scattering results from Ca3Ru2O7 for applied field orientation H o∥(hard) b-axis. Our study reveals a field-induced orbital-ordered (OO) to orbital-disordered (OD) quantum phase transition, which is instigated in part by the strong spin-orbit coupling in this material. This study shows that dramatic magnetic field effects are most prevalent in a regime characterized by {"}mixed{"} magnetic and orbital phases (OD), providing further evidence for the strong connection between intrinsic phase inhomogeneity and {"}colossal{"} behavior in complex materials.",

keywords = "Orbital ordering, Raman scattering, Ruthenates",

author = "Karpus, {J. F.} and R. Gupta and H. Barath and Cooper, {S. L.} and G. Cao",

note = "Funding Information: We also acknowledge support of this work by the National Science Foundation (DMR02-44502), the Department of Energy (DEFG02-91ER45439), and by the Sony Faculty Scholar Fund.",

year = "2005",

month = apr,

day = "30",

doi = "10.1016/j.physb.2005.01.368",

language = "English (US)",

volume = "359-361",

pages = "1234--1236",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "SPEC. ISS.",

}

TY - JOUR

T1 - Raman scattering studies of field-induced melting of the orbital-ordered state of Ca3Ru2O7

AU - Karpus, J. F.

AU - Gupta, R.

AU - Barath, H.

AU - Cooper, S. L.

AU - Cao, G.

N1 - Funding Information: We also acknowledge support of this work by the National Science Foundation (DMR02-44502), the Department of Energy (DEFG02-91ER45439), and by the Sony Faculty Scholar Fund.

PY - 2005/4/30

Y1 - 2005/4/30

N2 - We present field- and temperature-dependent Raman scattering results from Ca3Ru2O7 for applied field orientation H o∥(hard) b-axis. Our study reveals a field-induced orbital-ordered (OO) to orbital-disordered (OD) quantum phase transition, which is instigated in part by the strong spin-orbit coupling in this material. This study shows that dramatic magnetic field effects are most prevalent in a regime characterized by "mixed" magnetic and orbital phases (OD), providing further evidence for the strong connection between intrinsic phase inhomogeneity and "colossal" behavior in complex materials.

AB - We present field- and temperature-dependent Raman scattering results from Ca3Ru2O7 for applied field orientation H o∥(hard) b-axis. Our study reveals a field-induced orbital-ordered (OO) to orbital-disordered (OD) quantum phase transition, which is instigated in part by the strong spin-orbit coupling in this material. This study shows that dramatic magnetic field effects are most prevalent in a regime characterized by "mixed" magnetic and orbital phases (OD), providing further evidence for the strong connection between intrinsic phase inhomogeneity and "colossal" behavior in complex materials.

KW - Orbital ordering

KW - Raman scattering

KW - Ruthenates

UR - http://www.scopus.com/inward/record.url?scp=18144386486&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18144386486&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2005.01.368

DO - 10.1016/j.physb.2005.01.368

M3 - Article

AN - SCOPUS:18144386486

SN - 0921-4526

VL - 359-361

SP - 1234

EP - 1236

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -