Stability of the spin density wave phases in (TMTSF)2ClO4 : quantized nesting effect

Abstract

2014 La stabilité des phases Onde de Densité de Spin dans (TMTSF)2ClO4 s'interprète par de simples arguments d'ajustement de surfaces de Fermi anisotropes : nous montrons que l'ordre des anions, en introduisant de nouvelles réflexions de Bragg perturbe l'ajustement et abaisse la stabilité de l'Onde de Densité de Spin. Nous améliorons l'argument de Gor'kov et Lebed' sur l'effet d'un champ magnétique sur l'ajustement en permettant au vecteur d'onde Q(H) de s'adapter au champ H, si bien que l'ajustement est quantifié. Nous prévoyons que H induit une succession de phases magnétiques, où Q(H) varie linéairement, séparées par des transitions du premier ordre où Q(H) est discontinu. A basse température, la tension de Hall est constante à l'intérieur d'une phase, comme dans l'Effet Hall Quantifié, en accord avec les données d'effet Hall.

Soliton wall superlattice charge-density-wave phase in the quasi-one-dimensional conductor(Per)2Pt(mnt)2Wu1, Lebed2 2009Phys. Rev. B2110View full textAdd to dashboardCite

“…[1][2][3][4][5][6] On the other hand, the spin-density-wave ͑SDW͒ phases are not sensitive to the Pauli spin-splitting effects. 2,[7][8][9][10][11][12] In some quasi-one-dimensional ͑Q1D͒ organic materials, the field-induced dimensional crossovers in an electron motion 2,7 can even enhance the SDW instability and lead to a cascade of phase transitions, which is known as the field-induced spin-density-wave ͑FISDW͒ one. 2,[7][8][9][10][11][12] This idea has been also applied to the CDW phases, 3,4 where the field-induced dimensional crossovers are shown to restore the CDW instability, but only at rather low temperatures.…”

Quantum limit in a magnetic field for triplet superconductivity in a quasi-one-dimensional conductor

“…Rp, 74.70.Kn, 74.25.Op High magnetic field properties of quasi-onedimensional (Q1D) conductors and superconductors have been intensively studied since the discovery of the Field-Induced Spin-Density-Wave (FISDW) cascade of phase transitions [1][2][3][4]. Note that the FISDW phenomenon, experimentally discovered in the (TMTSF) 2 X compounds [1,2], where X=ClO 4 and X=PF 6 , was historically the first one which was successfully explained in terms of quasi-classical 3D → 2D dimensional crossover in high magnetic fields [3,[5][6][7]. At present, it has been established that different kinds of quasi-classical dimensional crossovers in a magnetic field are responsible for such unusual phenomena in layered Q1D conductors as the Field-Induced Charge-Density-Wave (FICDW) phase transitions [3,5,8,9], Danner-Kang-Chaikin oscillations [3,10], Lebed Magic Angles [3,11,12], and Lee-NaughtonLebed oscillations [3,[13][14][15][16].…”

Origin of rapid oscillations in low-dimensional(TMTSF)2PF6

“…[1][2][3][4]). The Fermi surface (FS) in this compound consists of two sheets directed perpendicular to a, which are slightly corrugated due to a small transfer integrals in b and c directions.…”