Two Kinds of the Coexistent States in One-Dimensional Quarter -Filled Systems under Magnetic Fields

Abstract

The coexistent state of the spin density wave (SDW) and the charge density wave (CDW) in the one-dimensional quarter-filled system and with the Coulomb interaction up to the next-nearest sites under magnetic fields is studied. It is found that, in the coexistent state of $2k_{\mathrm{F}}$-SDW and $2k_{\mathrm{F}}$-CDW, the charge order is suppressed and $2k_{\mathrm{F}}$-SDW changes to $2k_{\mathrm{F}}$-SDW having the different alignment of spin under high magnetic fields, whereas, in the coexistent state of $2k_{\mathrm{F}}$-SDW and $4k_{\mathrm{F}}$-CDW, $4k_{\mathrm{F}}$-CDW still remains and $2k_{\mathrm{F}}$-SDW is suppressed. The critical temperature of the charge order is higher than that of the spin order when the inter-site Coulomb interaction is strong. These will be observed in experiments such as the X-ray scattering measurement and NMR.

9 pages, 20 figures

References in corpus (3)

• Correlation Effects in a One-Dimensional Quarter-Filled Electron System with Repulsive Interactions
• Role of Phase Variables in Quarter-Filled Spin Density Wave States
• Coexistent State of Charge Density Wave and Spin Density Wave in One-Dimensional Quarter Filled Band Systems under Magnetic Fields

Cited by in corpus (2)

• Magnetic Field Effect in One-Dimensional Charge Ordering Systems
• Finite-temperature phase transitions in quasi-one-dimensional molecular conductors