Soliton wall superlattice charge-density-wave phase in the quasi-one-dimensional conductor(Per)2Pt(mnt)2

Abstract

We demonstrate that the Pauli spin-splitting effects in a magnetic field improve nesting properties of a realistic quasi-one-dimensional electron spectrum. As a result, a high resistance Peierls charge-density-wave ͑CDW͒ phase is stabilized in high enough magnetic fields in ͑Per͒ 2 Pt͑mnt͒ 2 conductor. We show that, in low and very high magnetic fields, the Pauli spin-splitting effects lead to a stabilization of a soliton wall superlattice ͑SWS͒ CDW phase, which is characterized by periodically arranged soliton and antisoliton walls. We suggest experimental studies of the predicted first-order phase transitions between the Peierls and SWS phases to discover a unique SWS phase. It is important that, in the absence of a magnetic field and in a limit of very high magnetic fields, the suggested model is equivalent to the exactly solvable model of Brazovskii, Dzyaloshinskii, and Kirova for the Su-Schrieffer-Heeger solitons.

Re-entrant magnetic-field–induced charge and spin gaps in the coupled dual-chain quasi–one-dimensional organic conductor perylene 2 [Pt(mnt) 2 ]

“…If a field induced CDW 1 (FICDW) develops, then it makes the possibility of a re-entrant SP 1 state as we observe in our data likely, since the re-emergent CDW 1 state would re-stabilize the SP 1 state. Our results are also consistent with theoretical work that predicts a FICDW [22,23] for Per 2 [Pt(mnt) 2 ]. Another possible explanation given for the observation of the FICDW is due to a CDW-SDW hybridization [24].…”

Fulde-Ferrell-Larkin-Ovchinnikov states in a superconducting ring with magnetic fields: Phase diagram and the first-order phase transitions

“…Besides metallic superconductors and cold Fermi gases, these states have been attracting much attention in QCD, because they are also expected to appear in chiral condensates or diquark condensates of quarks at high density and/or high temperature [11,12]. However, in condensed matter systems, the direct confirmation of these states has not yet been achieved for 50 years since its proposal, in spite of tremendous efforts [13][14][15].…”