scholarly journals Role of the Fermi-Surface Anisotropy in Angle-Dependent Magnetic-Field Oscillations for Identifying the Energy-Gap Anisotropy ofAyFe2Se2Superconductors

2012 ◽  
Vol 109 (18) ◽  
Author(s):  
Tanmoy Das ◽  
Anton B. Vorontsov ◽  
Ilya Vekhter ◽  
Matthias J. Graf
Keyword(s):  
Magnetic Field ◽  
Fermi Surface ◽  
Energy Gap ◽  
Surface Anisotropy ◽  
Gap Anisotropy ◽  
Fermi Surface Anisotropy

Change of the de Haas – van Alphen frequency of potassium with pressure

1980 ◽  
Vol 58 (3) ◽  
pp. 370-375 ◽  
Author(s):  
Z. Altounian ◽  
W. R. Datars
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Pressure Dependence ◽  
Charge Density Wave ◽  
Energy Gap ◽  
Density Wave ◽  
Surface Anisotropy ◽  
Band Structure Calculations ◽  
Structure Calculations ◽  
Fermi Surface Anisotropy

The pressure dependence of the de Haas – van Alphen frequency in oriented potassium samples has been investigated with pressures up to 4.6 kbar. The change of frequency with pressure is less than that expected from free-electron scaling and the Fermi surface anisotropy increases from 0.13% at zero pressure to 0.47% at 4 kbar. These results are discussed in terms of band structure calculations and the charge density wave (CDW) model of potassium. The CDW energy gap changes with pressure for the CDW model to be applicable.

scholarly journals Signature of Fermi-surface anisotropy in point contact conductance in the presence of defects

2006 ◽  
Vol 74 (8) ◽  
Author(s):  
Ye. S. Avotina ◽  
Yu. A. Kolesnichenko ◽  
A. F. Otte ◽  
J. M. van Ruitenbeek
Keyword(s):  
Fermi Surface ◽  
Point Contact ◽  
Surface Anisotropy ◽  
Contact Conductance ◽  
Fermi Surface Anisotropy

Superconductivity and Fermi Surface Anisotropy in Transition Metal Dichalcogenide NbTe 2

2019 ◽  
Vol 36 (5) ◽  
pp. 057402 ◽  
Author(s):  
Xi Zhang ◽  
Tianchuang Luo ◽  
Xiyao Hu ◽  
Jing Guo ◽  
Gongchang Lin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Fermi Surface ◽  
Transition Metal Dichalcogenide ◽  
Surface Anisotropy ◽  
Fermi Surface Anisotropy

Magnetotransport phenomena in layered conductors under magnetic breakdown

2017 ◽  
Vol 31 (14) ◽  
pp. 1750114
Author(s):  
O. Galbova ◽  
V. G. Peschansky ◽  
D. I. Stepanenko
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Energy Spectrum ◽  
Hydrostatic Pressure ◽  
Fermi Surface ◽  
Linear Dependence ◽  
Energy Gap ◽  
Electron Energy Spectrum ◽  
External Effects ◽  
Magnetic Breakdown

We study the transport phenomena in layered conductors with rather general electron energy spectrum placed in a high magnetic field [Formula: see text], under conditions when the distance between various sheets of the Fermi surface (FS) may become small under the external effects, such as hydrostatic pressure or impurity atom doping, and electrons can transfer from one sheet of the FS to another due to magnetic breakdown. We calculate the dependence of the in-plane electrical conductivity and magnetoresistance on magnetic field and probability of magnetic breakdown and show that the field-induced quadratic increase of the in-plane resistance in the absence of magnetic breakdown is changed by a linear dependence on [Formula: see text]. With a further reduction of the energy gap between FS sheets, the in-plane resistance is saturated.

Critical Magnetic Field and Energy-Gap Anisotropy of Zinc

1973 ◽  
Vol 7 (9) ◽  
pp. 4118-4123 ◽  
Author(s):  
D. U. Gubser ◽  
J. E. Cox
Keyword(s):  
Magnetic Field ◽  
Energy Gap ◽  
Critical Magnetic Field ◽  
Gap Anisotropy

scholarly journals Ballistic transport experiment detects Fermi surface anisotropy of graphene

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Takushi Oka ◽  
Shingo Tajima ◽  
Ryoya Ebisuoka ◽  
Taiki Hirahara ◽  
Kenji Watanabe ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Ballistic Transport ◽  
Surface Anisotropy ◽  
Transport Experiment ◽  
Fermi Surface Anisotropy
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