Fermi Surface of Superconducting LaFePO Determined by Quantum Oscillations

Journal Article · Sun Jan 10 23:00:00 EST 2010 · Submitted to Physical Review Letters

OSTI ID:970451

Coldea, A I; Fletcher, J D; Carrington, A; Analytis, J G; Bangura, A F; Chu, J -H; Erickson, A S; Fisher, I R; Hussey, N E; McDonald, R D

We report extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor LaFePO, (T{sub c} {approx} 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 {approx}2. The quasi-two dimensional Fermi surface consist of nearly-nested electron and hole pockets, suggesting proximity to a spin/charge density wave instability.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 970451
• Report Number(s): SLAC-PUB-13890
• Journal Information: Submitted to Physical Review Letters, Journal Name: Submitted to Physical Review Letters
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRONS
FERMI LEVEL
INSTABILITY
MAGNETIC FIELDS
OSCILLATIONS
Other
MATSCI
SUPERCONDUCTORS
TORQUE
TRANSPORT