Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

C. Stock; J. A. Rodriguez-Rivera; K. Schmalzl; E. E. Rodriguez; A. Stunault; C. Petrovic

doi:10.1103/PhysRevLett.114.247005

Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

C. Stock^*, J. A. Rodriguez-Rivera, K. Schmalzl, E. E. Rodriguez, A. Stunault, C. Petrovic

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

CeRhIn5 is an itinerant magnet where the Ce3+ spins order in a simple helical phase. We investigate the spin excitations and observe sharp spin waves parameterized by a nearest-neighbor exchange, J(RKKY) = 0.88 +/- 0.05 meV. At higher energies, the spin fluctuations are heavily damped, where single-quasiparticle excitations are replaced by a momentum- and energy-broadened continuum constrained by kinematics of energy and momentum conservation. The delicate energy balance between localized and itinerant characters results in the breakdown of the single-quasiparticle picture in CeRhIn5.

Original language	English
Article number	247005
Number of pages	6
Journal	Physical Review Letters
Volume	114
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.114.247005
Publication status	Published - 19 Jun 2015

Keywords / Materials (for Non-textual outputs)

HIGH-TEMPERATURE SUPERCONDUCTIVITY
HEISENBERG-ANTIFERROMAGNET
NEUTRON POLARIMETRY
HEAVY
IRON
SCATTERING
FERROMAGNET
CONTINUUM
SYMMETRY
CECOIN5

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10.1103/PhysRevLett.114.247005

Chris Stock
- cstocked.acuk
- School of Physics and Astronomy - Personal Chair of Neutron Spectroscopy
Person: Academic: Research Active

Cite this

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title = "Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5",

abstract = "CeRhIn5 is an itinerant magnet where the Ce3+ spins order in a simple helical phase. We investigate the spin excitations and observe sharp spin waves parameterized by a nearest-neighbor exchange, J(RKKY) = 0.88 +/- 0.05 meV. At higher energies, the spin fluctuations are heavily damped, where single-quasiparticle excitations are replaced by a momentum- and energy-broadened continuum constrained by kinematics of energy and momentum conservation. The delicate energy balance between localized and itinerant characters results in the breakdown of the single-quasiparticle picture in CeRhIn5.",

keywords = "HIGH-TEMPERATURE SUPERCONDUCTIVITY, HEISENBERG-ANTIFERROMAGNET, NEUTRON POLARIMETRY, HEAVY, IRON, SCATTERING, FERROMAGNET, CONTINUUM, SYMMETRY, CECOIN5",

author = "C. Stock and Rodriguez-Rivera, \{J. A.\} and K. Schmalzl and Rodriguez, \{E. E.\} and A. Stunault and C. Petrovic",

year = "2015",

month = jun,

day = "19",

doi = "10.1103/PhysRevLett.114.247005",

language = "English",

volume = "114",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

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TY - JOUR

T1 - Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

AU - Stock, C.

AU - Rodriguez-Rivera, J. A.

AU - Schmalzl, K.

AU - Rodriguez, E. E.

AU - Stunault, A.

AU - Petrovic, C.

PY - 2015/6/19

Y1 - 2015/6/19

N2 - CeRhIn5 is an itinerant magnet where the Ce3+ spins order in a simple helical phase. We investigate the spin excitations and observe sharp spin waves parameterized by a nearest-neighbor exchange, J(RKKY) = 0.88 +/- 0.05 meV. At higher energies, the spin fluctuations are heavily damped, where single-quasiparticle excitations are replaced by a momentum- and energy-broadened continuum constrained by kinematics of energy and momentum conservation. The delicate energy balance between localized and itinerant characters results in the breakdown of the single-quasiparticle picture in CeRhIn5.

AB - CeRhIn5 is an itinerant magnet where the Ce3+ spins order in a simple helical phase. We investigate the spin excitations and observe sharp spin waves parameterized by a nearest-neighbor exchange, J(RKKY) = 0.88 +/- 0.05 meV. At higher energies, the spin fluctuations are heavily damped, where single-quasiparticle excitations are replaced by a momentum- and energy-broadened continuum constrained by kinematics of energy and momentum conservation. The delicate energy balance between localized and itinerant characters results in the breakdown of the single-quasiparticle picture in CeRhIn5.

KW - HIGH-TEMPERATURE SUPERCONDUCTIVITY

KW - HEISENBERG-ANTIFERROMAGNET

KW - NEUTRON POLARIMETRY

KW - HEAVY

KW - IRON

KW - SCATTERING

KW - FERROMAGNET

KW - CONTINUUM

KW - SYMMETRY

KW - CECOIN5

U2 - 10.1103/PhysRevLett.114.247005

DO - 10.1103/PhysRevLett.114.247005

M3 - Article

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 247005

ER -

Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

Abstract

Keywords / Materials (for Non-textual outputs)

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