The other two frequencies arise from fs sheets that have been reconstructed in the. Three frequency branches for magnetic field directions in the 110 plane were investigated. We have found two welldefined frequencies with the magnetic field parallel to a fivefold axis, and two different ones with the field parallel to a twofold axis. We have found that ybsn 3 is a semimetal and it becomes superconducting below 3. One now needs to add, so the semiclassical orbits, which were circles in two dimensions, are now cylinders. Reasons are discussed for relating the experimental results to the fermi surface of the high temperature, body centred cubic phase of the metal.
The method provides details of the extremal areas of a fermi surface. In simplest terms, the phenomenon is a i variation of the magnetic susceptibility which is. On increasing the temperature, the amplitude of the oscillations substantially decreased, suggesting that the carriers. The cyclotron masses of prin 3 are in the range of 0. In condensed matter physics, quantum oscillations describes a series of related experimental techniques used to map the fermi surface of a metal in the presence of a strong magnetic field. Numerous frequency branches have been obtained in the 100, 110, and 001 planes, and several cyclotron effective masses have been determined. A new expression is derived for the differential magnetic susceptibility which clearly shows the individual contributions of zerotemperature and nonzero temperature terms. Experimental tests of band structure and a survey of the periodic table. In this effect, the magnetization, normalized by the applied field, of a sample of bismuth was found to oscillate with h1. The results show some compatibility with the nearlyfreeelectron model in the single or. Modify, remix, and reuse just remember to cite ocw as the source. The theory is developed under condition that the chemical potential is much greater than the cyclotron frequency, which is proved to be valid for using grand canonical ensemble in the systems of low. Download citation email a colleague citation alerts.
The dhva effect was detected by the lowfrequency fieldmodulation technique using magnetic fields between 35 and 55 koe at temperatures below 2. Recommended articles cannot be displayed at this time. Semiclassical dynamics of electrons, bloch oscillation and quantization of orbits in a uniform magnetic field. The fermi surface of prin 3 is almost the same as that of the nonf reference material, lain 3. A highly readable lecture notes by steven simon from oxfrod u. A footballshaped piece predicted in the third band has the size and. Five frequency groups have been measured in the 110 and 100 planes along with some effective masses at high symmetry points. We show that landau level broadening in alloys occurs naturally as a consequence of random variations in the local quasiparticle density, without the need to. We show that in a dynamically modulated photonic resonator lattice exhibiting an effect magnetic. Some provisional values of effective masses have also been obtained. For full access to this pdf, sign in to an existing account, or purchase an annual subscription. Haas van alphen effect and fitting it with ellipsoidal shapes in which the relation between energy and wave vector is assumed to be quadratic. The areas of cross section of the main part of the fermi surface and of the contact have been determined.
Three distinct frequencies were observed, one of which can be correlated with a fs sheet that is unaltered by cdw formation. All five groups observed are well explained by skrivers relativistic lmto band calculation. F at field b2, energy of the electron system is higher than at b1 or b3. Pdf 246 kb shigeki nimori 1, haruyoshi aoki 1, taichi terashima 1. The number of branches suggests a complicated fermi surface which is not well explained by existing band structures.
1204 828 1285 628 337 1046 518 1620 1308 1573 1236 1309 931 256 74 621 902 300 680 237 666 1004 564 420 706 307 1312 634 780 1086 1150 660 364 1123