Anharmonicity and self-energy effects of the E2g phonon in Mg B2

A. Mialitsin; B. S. Dennis; N. D. Zhigadlo; J. Karpinski; Girsh Blumberg

doi:10.1103/PhysRevB.75.020509

Anharmonicity and self-energy effects of the E2g phonon in Mg B2

A. Mialitsin, B. S. Dennis, N. D. Zhigadlo, J. Karpinski, Girsh Blumberg

School of Arts and Sciences, Physics & Astronomy

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

22 Scopus citations

Abstract

We present a Raman scattering study of the E2g phonon anharmonicity and of superconductivity-induced self-energy effects in Mg B2 single crystals. We show that anharmonic two-phonon decay is mainly responsible for the unusually large linewidth of the E2g mode. We observe ∼2.5% hardening of the E2g phonon frequency upon cooling into the superconducting state and estimate the electron-phonon coupling strength associated with this renormalization.

Original language	English (US)
Article number	020509
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.75.020509
State	Published - 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.75.020509

Fingerprint Dive into the research topics of 'Anharmonicity and self-energy effects of the E2g phonon in Mg B2'. Together they form a unique fingerprint.

Cite this

@article{b7cb401617eb40fa80309cebf7a06166,

title = "Anharmonicity and self-energy effects of the E2g phonon in Mg B2",

abstract = "We present a Raman scattering study of the E2g phonon anharmonicity and of superconductivity-induced self-energy effects in Mg B2 single crystals. We show that anharmonic two-phonon decay is mainly responsible for the unusually large linewidth of the E2g mode. We observe ∼2.5% hardening of the E2g phonon frequency upon cooling into the superconducting state and estimate the electron-phonon coupling strength associated with this renormalization.",

author = "A. Mialitsin and Dennis, {B. S.} and Zhigadlo, {N. D.} and J. Karpinski and Girsh Blumberg",

year = "2007",

doi = "10.1103/PhysRevB.75.020509",

language = "English (US)",

volume = "75",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Anharmonicity and self-energy effects of the E2g phonon in Mg B2

AU - Mialitsin, A.

AU - Dennis, B. S.

AU - Zhigadlo, N. D.

AU - Karpinski, J.

AU - Blumberg, Girsh

PY - 2007

Y1 - 2007

N2 - We present a Raman scattering study of the E2g phonon anharmonicity and of superconductivity-induced self-energy effects in Mg B2 single crystals. We show that anharmonic two-phonon decay is mainly responsible for the unusually large linewidth of the E2g mode. We observe ∼2.5% hardening of the E2g phonon frequency upon cooling into the superconducting state and estimate the electron-phonon coupling strength associated with this renormalization.

AB - We present a Raman scattering study of the E2g phonon anharmonicity and of superconductivity-induced self-energy effects in Mg B2 single crystals. We show that anharmonic two-phonon decay is mainly responsible for the unusually large linewidth of the E2g mode. We observe ∼2.5% hardening of the E2g phonon frequency upon cooling into the superconducting state and estimate the electron-phonon coupling strength associated with this renormalization.

UR - http://www.scopus.com/inward/record.url?scp=33846292520&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846292520&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.75.020509

DO - 10.1103/PhysRevB.75.020509

M3 - Article

AN - SCOPUS:33846292520

VL - 75

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 2

M1 - 020509

ER -