A Triplet Resonance in Superconducting Fe1.03Se0.4Te0.6

Juanjuan Liu (刘娟娟); A. T. Savici; G. E. Granroth; K. Habicht; Y. Qiu (邱义铭); Jin Hu (胡津); Z. Q. Mao (毛志强); Wei Wei Bao (鲍威)

doi:10.1088/0256-307X/35/12/127401

A Triplet Resonance in Superconducting Fe_1.03Se_0.4Te_0.6

Juanjuan Liu (刘娟娟)
, A. T. Savici
, G. E. Granroth
, K. Habicht
, Y. Qiu (邱义铭)
, Jin Hu (胡津)
, Z. Q. Mao (毛志强)
, Wei Bao (鲍威)^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

Abstract

From heavy fermion compounds and cuprates to iron pnictides and chalcogenides, a spin resonance at hΩ₀ ∝ 𝑘_B𝑇_c is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconducting state. While both scenarios suggest a central role for magnetic fluctuations, distinguishing them is important to identify the right theoretical framework to understand these types of unconventional superconductors. Using an inelastic neutron scattering technique, we show that the spin resonance in the optimally doped Fe_1.03Se_0.4Te_0.6 superconductor splits into three peaks in a high magnetic field, a signature of a two-particle S = 1 triplet bound state.

©2018 Chinese Physical Society and IOP Publishing Ltd

Original language	English
Article number	127401
Journal	Chinese Physics Letters
Volume	35
Issue number	12
DOIs	https://doi.org/10.1088/0256-307X/35/12/127401
Publication status	Published - Dec 2018
Externally published	Yes

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@article{86e57648778c429986783892923d0b98,

title = "A Triplet Resonance in Superconducting Fe1.03Se0.4Te0.6",

abstract = "From heavy fermion compounds and cuprates to iron pnictides and chalcogenides, a spin resonance at hΩ0 ∝ 푘B푇c is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconducting state. While both scenarios suggest a central role for magnetic fluctuations, distinguishing them is important to identify the right theoretical framework to understand these types of unconventional superconductors. Using an inelastic neutron scattering technique, we show that the spin resonance in the optimally doped Fe1.03Se0.4Te0.6 superconductor splits into three peaks in a high magnetic field, a signature of a two-particle S = 1 triplet bound state. {\textcopyright}2018 Chinese Physical Society and IOP Publishing Ltd ",

author = "\{Juanjuan Liu (刘娟娟)\} and Savici, \{A. T.\} and Granroth, \{G. E.\} and K. Habicht and \{Y. Qiu (邱义铭)\} and \{Jin Hu (胡津)\} and \{Z. Q. Mao (毛志强)\} and \{Wei Bao (鲍威)\}",

year = "2018",

month = dec,

doi = "10.1088/0256-307X/35/12/127401",

language = "English",

volume = "35",

journal = "Chinese Physics Letters",

issn = "0256-307X",

publisher = "IOP Publishing",

number = "12",

}

TY - JOUR

T1 - A Triplet Resonance in Superconducting Fe1.03Se0.4Te0.6

AU - Juanjuan Liu (刘娟娟), null

AU - Savici, A. T.

AU - Granroth, G. E.

AU - Habicht, K.

AU - Y. Qiu (邱义铭), null

AU - Jin Hu (胡津), null

AU - Z. Q. Mao (毛志强), null

AU - Wei Bao (鲍威), null

PY - 2018/12

Y1 - 2018/12

N2 - From heavy fermion compounds and cuprates to iron pnictides and chalcogenides, a spin resonance at hΩ0 ∝ 푘B푇c is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconducting state. While both scenarios suggest a central role for magnetic fluctuations, distinguishing them is important to identify the right theoretical framework to understand these types of unconventional superconductors. Using an inelastic neutron scattering technique, we show that the spin resonance in the optimally doped Fe1.03Se0.4Te0.6 superconductor splits into three peaks in a high magnetic field, a signature of a two-particle S = 1 triplet bound state. ©2018 Chinese Physical Society and IOP Publishing Ltd

AB - From heavy fermion compounds and cuprates to iron pnictides and chalcogenides, a spin resonance at hΩ0 ∝ 푘B푇c is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconducting state. While both scenarios suggest a central role for magnetic fluctuations, distinguishing them is important to identify the right theoretical framework to understand these types of unconventional superconductors. Using an inelastic neutron scattering technique, we show that the spin resonance in the optimally doped Fe1.03Se0.4Te0.6 superconductor splits into three peaks in a high magnetic field, a signature of a two-particle S = 1 triplet bound state. ©2018 Chinese Physical Society and IOP Publishing Ltd

UR - https://www.scopus.com/pages/publications/85057762587

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85057762587&origin=recordpage

U2 - 10.1088/0256-307X/35/12/127401

DO - 10.1088/0256-307X/35/12/127401

M3 - RGC 21 - Publication in refereed journal

SN - 0256-307X

VL - 35

JO - Chinese Physics Letters

JF - Chinese Physics Letters

IS - 12

M1 - 127401

ER -