Quantum oscillations of Bi resistance in high magnetic fields (quantum limit)

2004 ◽  
Vol 346-347 ◽  
pp. 301-305
Author(s):  
Vitaliy Krasovitsky
Keyword(s):  
Magnetic Fields ◽  
Quantum Limit ◽  
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).

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

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

From quantum oscillations to charge order in high- copper oxides in high magnetic fields

2013 ◽  
Vol 14 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Baptiste Vignolle ◽  
David Vignolles ◽  
Marc-Henri Julien ◽  
Cyril Proust
Keyword(s):  
Magnetic Fields ◽  
Charge Order ◽  
Copper Oxides ◽  
High Magnetic Fields ◽  
Quantum Oscillations ◽  
High Copper

GRAPHENE IN EXTREMELY HIGH MAGNETIC FIELDS

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1123-1130 ◽  
Author(s):  
Z. Jiang ◽  
Y. Zhang ◽  
Y.-W. Tan ◽  
J. A. Jaszczak ◽  
H. L. Stormer ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Dirac Point ◽  
Quantum Hall ◽  
Quantum Limit ◽  
High Magnetic Fields ◽  
Two Dimensional ◽  
High Quality ◽  
Strong Magnetic Fields ◽  
Theoretical Predictions ◽  
Spin Degeneracy

We have studied the quantum Hall (QH) effect in two-dimensional electrons and holes in high quality graphene samples in strong magnetic fields up to 45 T. A distinctive half-integer QH effect is discovered at high magnetic fields, with QH plateaus appearing at filling factors ν = ±4(|n| + 1/2), where n is the Landau level (LL) index. This finding is consistent with theoretical predictions. In addition, in the extreme magnetic quantum limit with magnetic fields up to 45 T, we observe LL splittings in graphene at filling factors ν = 0,±1,±4. Further detailed investigation shows that the presence of the ν = 0,±1 QH states indicates the n = 0 LL at the charge neutral Dirac point splits into four sublevels, lifting both the sublattice and the spin degeneracy, while the QH states at ν = ±4 can be attributed to lifting of the spin degeneracy of the n = ±1 LLS.

scholarly journals Electronic subbands in the a−LaAlO3/KTaO3 interface revealed by quantum oscillations in high magnetic fields

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Km Rubi ◽  
Shengwei Zeng ◽  
Femke Bangma ◽  
Michel Goiran ◽  
A. Ariando ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Quantum Oscillations
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