Semantic Scholar Open Access 2005 3 sitasi

Structural Disorder Induced Polaron Formation and Magnetic Scattering in the Disordered Holstein-Double Exchange Model

P. Majumdar Sanjeev Kumar

Lihat Sumber DOI

Abstrak

In this paper we present results on the disordered Holstein-Double Exchange model, explicitly in three dimension and `metallic' densities, obtained by using a recently developed Monte Carlo approach. Following up on our earlier paper, cond-mat 0406085, here we provide a detailed microscopic picture of the thermally driven metal–insulator transition (MIT) that arises close to the ferromagnet to paramagnet transition in this problem. This paper is focused mainly on the `diagnostics', clarifying the origin of the effective disorder that drives the MIT in this system. To that effect, we provide results on the thermal evolution of the distributions of (i) lattice distortions, (ii) the net `structural disorder' and (iii) the `hopping disorder' arising from spin randomness feeding back through the Hunds coupling. We suggest a phenomenology for the thermally driven MIT, viewing it as an `Anderson–Holstein' transition.

Topik & Kata Kunci

Physics

Penulis (2)

P. Majumdar

Sanjeev Kumar

Format Sitasi

APA MLA BibTeX

Majumdar, P., Kumar, S. (2005). Structural Disorder Induced Polaron Formation and Magnetic Scattering in the Disordered Holstein-Double Exchange Model. https://doi.org/10.1143/JPSJS.74S.216

Akses Cepat

Lihat di Sumber doi.org/10.1143/JPSJS.74S.216

Informasi Jurnal

Tahun Terbit: 2005
Bahasa: en
Total Sitasi: 3×
Sumber Database: Semantic Scholar
DOI: 10.1143/JPSJS.74S.216
Akses: Open Access ✓