Absence of magnetic field dependence of the cyclotron effective masses of electrons on the Fermi surface of Pd

Journal Article · Thu Nov 15 00:00:00 EST 1984 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.30.5637· OSTI ID:6056259

Joss, W; Hall, L N; Crabtree, G W; Vuillemin, J J

The de Haas--van Alphen effect was used to search for a field-dependent many-body enhancement of the cyclotron effective mass in palladium, an effect suggested by experiments observing a depression of the electronic specific heat by a magnetic field. Sixteen orbits on the open hole, GAMMA-centered electron, and X-centered hole sheet of the Fermi surface of Pd were studied with the field-modulation technique in fields up to 15 T and at temperatures as low as 0.5 K. For the heavy-mass ..beta.. and ..gamma.. orbits on the open hole sheet we find effective masses approximately 15% higher than reported earlier, while results for the other orbits confirm earlier work. Within experimental error no field dependence in the cyclotron effective mass was found for any orbit, implying that a large reduction in the linear term of the specific heat by a magnetic field is not due to a suppression of spin fluctuations. In addition, the field dependence in the argument of the spin-splitting factor in the Lifshitz-Kosevich expression for the amplitude of the de Haas--van Alphen effect was measured for the ..cap alpha.. orbit on the open hole sheet. The small field dependence observed is inconsistent with a large suppression of spin fluctuations, but is consistent with high-field magnetization measurements.

• Research Organization: Materials Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 6056259
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 30:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PALLADIUM
EFFECTIVE MASS
FERMI LEVEL
AUGMENTATION
CYCLOTRON RESONANCE
DE HAAS-VAN ALPHEN EFFECT
FLUCTUATIONS
MAGNETIC FIELDS
MANY-BODY PROBLEM
SPECIFIC HEAT
SPIN
ANGULAR MOMENTUM
ELEMENTS
ENERGY LEVELS
MASS
METALS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PLATINUM METALS
RESONANCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
VARIATIONS
360104* - Metals & Alloys- Physical Properties