Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements

T. Kissikov; R. Sarkar; M. Lawson; B. T. Bush; E. I. Timmons; M. A. Tanatar; R. Prozorov; S. L. Bud'Ko; P. C. Canfield; R. M. Fernandes; W. F. Goh; W. E. Pickett; N. J. Curro

doi:10.1103/PhysRevB.96.241108

Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements

T. Kissikov, R. Sarkar, M. Lawson, B. T. Bush, E. I. Timmons, M. A. Tanatar, R. Prozorov, S. L. Bud'Ko, P. C. Canfield, R. M. Fernandes, W. F. Goh, W. E. Pickett, N. J. Curro

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

Abstract

The electric field gradient (EFG) tensor at the As75 site couples to the orbital occupations of the As p orbitals and is a sensitive probe of local nematicity in BaFe2As2. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition, in agreement with other measures of the bulk nematic susceptibility. Our work establishes an alternative method to extract the nematic susceptibility which, in contrast to transport methods, can be extended inside the superconducting state.

Original language	English (US)
Article number	241108
Journal	Physical Review B
Volume	96
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.96.241108
State	Published - Dec 19 2017
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Online availability

10.1103/PhysRevB.96.241108

Library availability

Discover UIUC Full Text

Cite this

Kissikov, T., Sarkar, R., Lawson, M., Bush, B. T., Timmons, E. I., Tanatar, M. A., Prozorov, R., Bud'Ko, S. L., Canfield, P. C., Fernandes, R. M., Goh, W. F., Pickett, W. E., & Curro, N. J. (2017). Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements. Physical Review B, 96(24), Article 241108. https://doi.org/10.1103/PhysRevB.96.241108

@article{6a13255609e448e78a641624bf3249e4,

title = "Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements",

abstract = "The electric field gradient (EFG) tensor at the As75 site couples to the orbital occupations of the As p orbitals and is a sensitive probe of local nematicity in BaFe2As2. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition, in agreement with other measures of the bulk nematic susceptibility. Our work establishes an alternative method to extract the nematic susceptibility which, in contrast to transport methods, can be extended inside the superconducting state.",

author = "T. Kissikov and R. Sarkar and M. Lawson and Bush, {B. T.} and Timmons, {E. I.} and Tanatar, {M. A.} and R. Prozorov and Bud'Ko, {S. L.} and Canfield, {P. C.} and Fernandes, {R. M.} and Goh, {W. F.} and Pickett, {W. E.} and Curro, {N. J.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = dec,

day = "19",

doi = "10.1103/PhysRevB.96.241108",

language = "English (US)",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements

AU - Kissikov, T.

AU - Sarkar, R.

AU - Lawson, M.

AU - Bush, B. T.

AU - Timmons, E. I.

AU - Tanatar, M. A.

AU - Prozorov, R.

AU - Bud'Ko, S. L.

AU - Canfield, P. C.

AU - Fernandes, R. M.

AU - Goh, W. F.

AU - Pickett, W. E.

AU - Curro, N. J.

PY - 2017/12/19

Y1 - 2017/12/19

N2 - The electric field gradient (EFG) tensor at the As75 site couples to the orbital occupations of the As p orbitals and is a sensitive probe of local nematicity in BaFe2As2. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition, in agreement with other measures of the bulk nematic susceptibility. Our work establishes an alternative method to extract the nematic susceptibility which, in contrast to transport methods, can be extended inside the superconducting state.

AB - The electric field gradient (EFG) tensor at the As75 site couples to the orbital occupations of the As p orbitals and is a sensitive probe of local nematicity in BaFe2As2. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition, in agreement with other measures of the bulk nematic susceptibility. Our work establishes an alternative method to extract the nematic susceptibility which, in contrast to transport methods, can be extended inside the superconducting state.

UR - http://www.scopus.com/inward/record.url?scp=85039418482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039418482&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.241108

DO - 10.1103/PhysRevB.96.241108

M3 - Article

AN - SCOPUS:85039418482

SN - 2469-9950

VL - 96

JO - Physical Review B

JF - Physical Review B

IS - 24

M1 - 241108

ER -

Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this