Electronic properties ofUX3 (X=Ga,Al, and Sn) compounds in high magnetic fields: Transport, specific heat, magnetization, and quantum oscillations

1999 ◽  
Vol 59 (22) ◽  
pp. 14473-14483 ◽  
Author(s):  
A. L. Cornelius ◽  
A. J. Arko ◽  
J. L. Sarrao ◽  
J. D. Thompson ◽  
M. F. Hundley ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Specific Heat ◽  
Electronic Properties ◽  
High Magnetic Fields ◽  
Quantum Oscillations

THE STUDY OF THE MAGNETIC BREAKDOWN EFFECT AS A FUNCTION OF ANGLE IN THE ORGANIC CONDUCTOR K- (BEDT-TTF)2Cu(NCS)2 IN HIGH MAGNETIC FIELDS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3355-3359
Author(s):  
I. MIHUT ◽  
C. C. AGOSTA ◽  
C. H. MIELKE ◽  
M. TOKOMOTO
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Spin Splitting ◽  
High Magnetic Fields ◽  
Organic Conductor ◽  
Cross Sectional ◽  
Tank Circuit ◽  
Quantum Oscillations ◽  
Magnetic Breakdown ◽  
Splitting Factor

The magnetic breakdown effect can be seen by the growth of new frequencies in the quantum oscillations in clean metals as a function of magnetic field. We have studied the variation of the amplitudes in the quantum oscillations in the resistance (the Shubnikov-de Haas effect) as a function of angle in the quasi-two dimensional-organic conductor κ-(BEDT-TTF)2Cu(NCS)2. The measurements were made by means of a radio frequency (rf) tank circuit (~ 50 MHz) at very high magnetic fields(50T-60T) and low temperature(500 mK). The geometry of the rf excitation we used excited in-plane currents, and therefore we measured the in-plane resistivity. In contrast to conventional transport measurements that measure the inter-plane resistivity, the in-plane resistivity is dominated by the magnetic breakdown frequencies. As a result we measured much higher breakdown frequency amplitudes than conventional transport experiments. As is expected, the angular dependence of the Shubnikov-de Haas frequencies have a 1/cosθ behavior. This is due to the change of the cross sectional area of the tubular Fermi surface as the angle with respect to the magnetic field is changed. The amplitude of the oscillations changes due to the spin splitting factor which takes into account the ratio between the spin splitting and the energy spacing of the Landau levels which also has 1/cosθ behavior. We show that our data agree with the semi-classical theory (Lifshitz-Kosevich formula).

scholarly journals CeMIn5(M=Co, Ir, Rh) HEAVY FERMION SUPERCONDUCTORS AND THE UTILITY OF HIGH MAGNETIC FIELDS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3025-3030 ◽  
Author(s):  
J. L. SARRAO
Keyword(s):  
Magnetic Fields ◽  
Specific Heat ◽  
Phase Diagrams ◽  
Present State ◽  
Applied Field ◽  
Heavy Fermion ◽  
Quantum Oscillation ◽  
High Magnetic Fields ◽  
Linear Coefficient ◽  
Heavy Fermion Superconductors

We review the properties of the recently discovered CeMIn 5 (M=Co, Ir, Rh) heavy fermion superconductors and discuss the present state of our understanding of these materials. A particular focus is the role that magnetic fields have played in elucidating the properties of these materials. Specifically, we discuss quantum oscillation measurements on CeMIn , the influence of applied field on the linear coefficient of specific heat, γ, and the nature of the HT phase diagrams in both the normal and superconducting states of these materials.

Numerical model of quantum oscillations in quasi-two-dimensional organic metals in high magnetic fields

1996 ◽  
Vol 54 (14) ◽  
pp. 9977-9987 ◽  
Author(s):  
N. Harrison ◽  
R. Bogaerts ◽  
P. H. P. Reinders ◽  
J. Singleton ◽  
S. J. Blundell ◽  
...  
Keyword(s):  
Numerical Model ◽  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Two Dimensional ◽  
Quantum Oscillations ◽  
Organic Metals

Resistivity, magnetization, and specific heat ofYbAgCu4in high magnetic fields

1995 ◽  
Vol 51 (21) ◽  
pp. 15053-15061 ◽  
Author(s):  
T. Graf ◽  
J. M. Lawrence ◽  
M. F. Hundley ◽  
J. D. Thompson ◽  
A. Lacerda ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Specific Heat ◽  
High Magnetic Fields

scholarly journals Specific heat of heavy-fermion CePd2Si2in high magnetic fields

2002 ◽  
Vol 14 (28) ◽  
pp. L543-L549 ◽  
Author(s):  
I Sheikin ◽  
Y Wang ◽  
F Bouquet ◽  
P Lejay ◽  
A Junod
Keyword(s):  
Magnetic Fields ◽  
Specific Heat ◽  
Heavy Fermion ◽  
High Magnetic Fields

scholarly journals Electronic properties of UNiAl in high magnetic fields

1994 ◽  
Vol 49 (13) ◽  
pp. 8852-8863 ◽  
Author(s):  
E. Brück ◽  
H. Nakotte ◽  
F. R. de Boer ◽  
P. F. de Châtel ◽  
H. P. van der Meulen ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Electronic Properties ◽  
High Magnetic Fields
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