De Haas-van Alphen effect in single crystal MgB2

A. Carrington; J. R. Cooper; N. E. Hussey; P. J. Meeson; E. A. Yelland; S. Lee; A. Yamamoto; S. Tajima

doi:10.1016/S0921-4534(02)02671-0

De Haas-van Alphen effect in single crystal MgB₂

A. Carrington, J. R. Cooper, N. E. Hussey, P. J. Meeson, E. A. Yelland, S. Lee, A. Yamamoto, S. Tajima

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present an experimental study of the de Haas-van Alphen effect in single crystals of MgB₂, using a piezo-resistive torque technique. Three quasi-particle orbits were observed. Two originate from a single warped Fermi surface tube along the c direction, and the third from a cylindrical section of an in-plane honeycomb network. The quasi-particle effective masses on these orbits were determined and compared to band structure calculations. From this we deduce that the electron-phonon coupling strength λ, is a factor ∼3 larger for the c-axis tube orbits than for the in-plane network orbit, in accord with recent microscopic calculations.

Original language	English
Pages (from-to)	105-106
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02671-0
Publication status	Published - 2003 May
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: 2002 Aug 20 → 2002 Aug 27

Keywords

Fermi surface
MgB
Quantum oscillations

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(02)02671-0

Cite this

@article{083b5e20fa81459f875974c50f0fdaf8,

title = "De Haas-van Alphen effect in single crystal MgB2",

abstract = "We present an experimental study of the de Haas-van Alphen effect in single crystals of MgB2, using a piezo-resistive torque technique. Three quasi-particle orbits were observed. Two originate from a single warped Fermi surface tube along the c direction, and the third from a cylindrical section of an in-plane honeycomb network. The quasi-particle effective masses on these orbits were determined and compared to band structure calculations. From this we deduce that the electron-phonon coupling strength λ, is a factor ∼3 larger for the c-axis tube orbits than for the in-plane network orbit, in accord with recent microscopic calculations.",

keywords = "Fermi surface, MgB, Quantum oscillations",

author = "A. Carrington and Cooper, {J. R.} and Hussey, {N. E.} and Meeson, {P. J.} and Yelland, {E. A.} and S. Lee and A. Yamamoto and S. Tajima",

note = "Funding Information: This work was supported by the NEDO (Japan), the EPSRC (UK) and the Royal Society (London). ; proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4534(02)02671-0",

language = "English",

volume = "388-389",

pages = "105--106",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

}

TY - JOUR

T1 - De Haas-van Alphen effect in single crystal MgB2

AU - Carrington, A.

AU - Cooper, J. R.

AU - Hussey, N. E.

AU - Meeson, P. J.

AU - Yelland, E. A.

AU - Lee, S.

AU - Yamamoto, A.

AU - Tajima, S.

N1 - Funding Information: This work was supported by the NEDO (Japan), the EPSRC (UK) and the Royal Society (London).

PY - 2003/5

Y1 - 2003/5

N2 - We present an experimental study of the de Haas-van Alphen effect in single crystals of MgB2, using a piezo-resistive torque technique. Three quasi-particle orbits were observed. Two originate from a single warped Fermi surface tube along the c direction, and the third from a cylindrical section of an in-plane honeycomb network. The quasi-particle effective masses on these orbits were determined and compared to band structure calculations. From this we deduce that the electron-phonon coupling strength λ, is a factor ∼3 larger for the c-axis tube orbits than for the in-plane network orbit, in accord with recent microscopic calculations.

AB - We present an experimental study of the de Haas-van Alphen effect in single crystals of MgB2, using a piezo-resistive torque technique. Three quasi-particle orbits were observed. Two originate from a single warped Fermi surface tube along the c direction, and the third from a cylindrical section of an in-plane honeycomb network. The quasi-particle effective masses on these orbits were determined and compared to band structure calculations. From this we deduce that the electron-phonon coupling strength λ, is a factor ∼3 larger for the c-axis tube orbits than for the in-plane network orbit, in accord with recent microscopic calculations.

KW - Fermi surface

KW - MgB

KW - Quantum oscillations

UR - http://www.scopus.com/inward/record.url?scp=0038188659&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038188659&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(02)02671-0

DO - 10.1016/S0921-4534(02)02671-0

M3 - Conference article

AN - SCOPUS:0038188659

SN - 0921-4534

VL - 388-389

SP - 105

EP - 106

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -