2014The positional order correlation length « 03BE~ » parallel to the smectic (Sm) layers in the G, F and C phases of HBHA (7O.6) has been measured by X-ray diffraction. In the Sm-G phase its value is limited by crystallite size and lies between 1200-1500 A. At the Sm-G to -F transition 03BE ~ changes from 300 to 180 A with a temperature dependence predicted by a dislocation mediated melting mo...

ABSTRACT In this work, we search for negative superhumps (nSHs) in poorly studied cataclysmic variables using Transiting Exoplanet Survey Satellite data. We find three eclipsing binaries with nSH signatures: HBHA 4204−09, Gaia DR3 5931071148325476992, and SDSS J090113.51+144704.6. The last one exhibits IW And-like behaviour archival Zwicky Transient Facility data, appears to have shallow, grazi...