Multiband Effects on -FeSe single crystals

Journal Article · Thu Mar 01 00:00:00 EST 2012 · Physical Review. B, Condensed Matter and Materials Physics

OSTI ID:1044765

Petrovic, C; Lei, H; Graf, D; Hu, R; Ryu, H; Choi, E S; Tozer, S W

We present the upper critical fields {mu}{sub 0}H{sub c2}(T) and Hall effect in {beta}-FeSe single crystals. The {mu}{sub 0}H{sub c2}(T) increases as the temperature is lowered for fields applied parallel and perpendicular to (101), the natural growth facet of the crystal. The {mu}{sub 0}H{sub c2}(T) for both field directions and the anisotropy at low temperature increase under pressure. Hole carriers are dominant at high magnetic fields. However, the contribution of electron-type carriers is significant at low fields and low temperature. Our results show that multiband effects dominate {mu}{sub 0}H{sub c2}(T) and electronic transport in the normal state.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1044765
• Report Number(s): BNL-98046-2012-JA; R&D Project: PO-013; KC0202010; TRN: US1203493
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 85, Issue 9; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRITICAL FIELD
HALL EFFECT
MAGNETIC FIELDS
MONOCRYSTALS
TRANSPORT
iron-based superconductors
crystal synthesis and characterization
magnetic field dependence