Noise and hysteresis in charged stripe, checkerboard, and clump forming systems

C. Reichhardt; C. J. Olson Reichhardt; A. R. Bishop

doi:10.1117/12.724614

8 June 2007 Noise and hysteresis in charged stripe, checkerboard, and clump forming systems

C. Reichhardt, C. J. Olson Reichhardt, A. R. Bishop

Proceedings Volume 6600, Noise and Fluctuations in Circuits, Devices, and Materials; 66001B (2007) https://doi.org/10.1117/12.724614
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy

Abstract

We numerically examine noise fluctuations and hysteresis phenomena in charged systems that form stripe, labyrinth or clump patterns. It is believed that charge inhomogeneities of this type arise in two-dimensional (2D) quantum hall systems and in electron crystal structures in high temperature superconductors, while related patterns appear in manganites and type-I superconductors. Recent noise and transport experiments in two-dimensional electron gases and high temperature superconducting samples revealed both 1/f^α noise signatures and hysteretic phenomena. Using numerical simulations we show that 1/f^α noise fluctuations and hysteresis are generic features that occur in charge systems which undergo a type of phase separation that results in stripes, clumps, checkerboards, or other inhomogeneous patterns. We find that these systems exhibit 1/f^α fluctuations with 1.2 < α < 1.8, rather than simple 1/f or 1/f^α fluctuations. We also propose that the 2D metal insulator transition may be associated with a clump electron glass phase rather than a Wigner glass phase.

Citation Download Citation

C. Reichhardt, C. J. Olson Reichhardt, and A. R. Bishop "Noise and hysteresis in charged stripe, checkerboard, and clump forming systems", Proc. SPIE 6600, Noise and Fluctuations in Circuits, Devices, and Materials, 66001B (8 June 2007); https://doi.org/10.1117/12.724614

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available