Quantum matter in high magnetic fields

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Topological change of the Fermi surface in ternary iron-pnictides with reduced c/a ratio: A dHvA study of CaFe2P2

(2009)

Authors:

Amalia I Coldea, CMJ Andrew, JG Analytis, RD McDonald, AF Bangura, J-H Chu, IR Fisher, A Carrington

Fermi surface of SrFe$_2$P$_2$ determined by de Haas-van Alphen effect

(2009)

Authors:

JG Analytis, CJ Andrew, AI Coldea, A McCollam, J-H Chu, RD McDonald, IR Fisher, A Carrington

Quantum Oscillation Studies of the Fermi Surface of LaFePO

(2009)

Authors:

A Carrington, AI Coldea, JD Fletcher, NE Hussey, CMJ Andrew, AF Bangura, JG Analytis, J-H Chu, AS Erickson, IR Fisher, RD McDonald

Fermi surface of superconducting LaFePO determined from quantum oscillations.

Phys Rev Lett 101:21 (2008) 216402

Authors:

AI Coldea, JD Fletcher, A Carrington, JG Analytis, AF Bangura, J-H Chu, AS Erickson, IR Fisher, NE Hussey, RD McDonald

Abstract:

We report extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor LaFePO, (T(c) approximately 6 K) using low temperature torque magnetometry and transport in high static magnetic fields (45 T). We find that the Fermi surface is in broad agreement with the band-structure calculations with the quasiparticle mass enhanced by a factor approximately 2. The quasi-two-dimensional Fermi surface consists of nearly nested electron and hole pockets, suggesting proximity to a spin or charge density wave instability.

Fermi surface of superconducting LaFePO determined by quantum oscillations

(2008)

Authors:

AI Coldea, JD Fletcher, A Carrington, JG Analytis, AF Bangura, J-H Chu, AS Erickson, IR Fisher, NE Hussey, RD McDonald