arXiv subjects

John A Wilson

Publications and source records attributed to John A Wilson.

4 recordsLinked to original sources

arXiv2007

Concerning two-gap ARPES data, the pseudogap, 2-q striping and magnetc circular dichroism from the negative-U HTSC perspective

Recent photoemission work on underdoped cuprates between Tc and T*, the pseudogap temperature, are interpreted within the framework of a previously developed negative-U scenario. From this exposition, incorporating a developed 2q diagonal striping model, detailed understanding follows of the ARPES results, together with certain STM and far infrared optical data. Identification of the origin of the magnetic circular dichroism and related effects exhibited by such materials below T* also appears to have been achieved.

cond-mat.supr-con↗

arXiv2004

Further detailing of the Bose-Einstein negative-U state in the high temperature superconducting cuprates

The cause of the sharp and universal optimization of the HTSC condensation energy at the hole doping concentration of p = 0.19 is identified within the context of the boson-fermion negative-U modelling and stripe phase electronic organization. Some recent structural, optical and positron annihilation experiments adding further support to this type of modelling of HTSC are briefly examined.

cond-mat.supr-con↗

arXiv2003

Bosonic mode interpretation of novel STM and related experimental results, within boson-fermion modelling of HTSC Materials

This paper seeks to synthesize much recent work on the HTSC materials around the latest energy resolved scanning tunnelling microscopy (STM) results from Davis and coworkers. The STM conductance diffuse scattering results in particular are employed as point of entry to discuss bosonic modes, both of condensed and uncondensed form. The bosonic mode picture is essential to understanding an ever growing range of observations within the HTSC field. The work is expounded within the context of the site-inhomogeneous negative-U boson-fermion modelling long advocated by the author. This general approach is presently seeing much theoretical development, into which I have looked to couple many of the experimental advances. While this formal theory is not yet sufficiently detailed to cover adequately all the experimental complexities presented by the real cuprate systems, it is clear it affords very appreciable support to the line taken. An attempt is made throughout to clarify why and how it is that these novel circumstances and phenomena are tied so very closely to this particular set of materials.

cond-mat.mtrl-sci↗

arXiv2003

Bosonic mode interpretation of novel STM and related experimental results, within boson-fermion modelling of HTSC

This paper seeks to synthesize much recent work on the HTSC materials around the latest energy resolved scanning tunnelling microscopy (STM) results from Davis and coworkers. The conductance diffuse scattering results in particular are employed as point of entry to discuss bosonic modes, both of condensed and uncondensed form. The bosonic mode picture is essential to understanding an ever growing range of observations within the HTSC field. The work is expounded within the context of the negative-U, boson-fermion modelling long advocated by the author. This general approach is presently seeing much theoretical development, into which I have looked to couple many of the experimental advances. While this formal theory is not yet sufficiently detailed to cover adequately all the experimental complexities presented by the real cuprate systems, it is clear it affords very appreciable support to the line taken. An attempt is made throughout to clarify why and how it is that these novel phenomena are tied so very closely to this particular set of materials.

cond-mat.supr-con↗