de Haas-van Alphen effect of FeP in double helical magnetic state

Citation
T. Nozue et al., de Haas-van Alphen effect of FeP in double helical magnetic state, J PHYS JPN, 70(1), 2001, pp. 192-198
Citations number
25
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
00319015 → ACNP
Volume
70
Issue
1
Year of publication
2001
Pages
192 - 198
Database
ISI
SICI code
0031-9015(200101)70:1<192:DHAEOF>2.0.ZU;2-1
Abstract
The de Haas-van Alphen (dHvA) effect has been investigated on high-quality single crystals of FeP in a double helical magnetic state with a 5c period in the magnetic fields up to 14T and at temperatures down to 0.42 K. Single crystals were grown by the chemical transport technique using iodine as th e transport agent. Nineteen branches were observed in three crystallographi c planes (100), (010) and (001), and analyzed with simple analytic equation s for the Fermi surfaces. Many of the dHvA branches have a characteristic a ngular dependence and are found to correspond to the orbits on surfaces bey ond the Brillouin zone in the magnetic state which is reduced to 1/5 of the non-magnetic one with the MnP-type along the [001] direction. These branch es originate from the orbits caused by a magnetic breakdown phenomenon unde r high fields. Cyclotron mass ratios were obtained to be up to 5.9, whereas the electronic specific heat coefficient is rather small. 2.80 mJK(-2) mol (-1).