TY - JOUR
T1 - Synchronized charge oscillations in correlated electron systems
AU - Shukla, Nikhil
AU - Parihar, Abhinav
AU - Freeman, Eugene
AU - Paik, Hanjong
AU - Stone, Greg
AU - Narayanan, Vijaykrishnan
AU - Wen, Haidan
AU - Cai, Zhonghou
AU - Gopalan, Venkatraman
AU - Engel-Herbert, Roman
AU - Schlom, Darrell G.
AU - Raychowdhury, Arijit
AU - Datta, Suman
N1 - Funding Information:
This work was supported by Office of Naval Research through award N00014-11-1-0665. AP was partially funded by a gift from Intel Corporation. G.S. received partial support from the National Science Foundation award DMR-0820404. SD and VN acknowledge funding, in part, from the National Science Foundation Expeditions in Computing Award-1317560. Work at Argonne National Laboratory was supported by the U.S Department of Energy, under Contract No. DE-AC02-06CH1135.
PY - 2014/5/14
Y1 - 2014/5/14
N2 - Strongly correlated phases exhibit collective carrier dynamics that if properly harnessed can enable novel functionalities and applications. In this article, we investigate the phenomenon of electrical oscillations in a prototypical MIT system, vanadium dioxide (VO 2). We show that the key to such oscillatory behaviour is the ability to induce and stabilize a non-hysteretic and spontaneously reversible phase transition using a negative feedback mechanism. Further, we investigate the synchronization and coupling dynamics of such VO 2 based relaxation oscillators and show, via experiment and simulation, that this coupled oscillator system exhibits rich non-linear dynamics including charge oscillations that are synchronized in both frequency and phase. Our approach of harnessing a non-hysteretic reversible phase transition region is applicable to other correlated systems exhibiting metal-insulator transitions and can be a potential candidate for oscillator based non-Boolean computing.
AB - Strongly correlated phases exhibit collective carrier dynamics that if properly harnessed can enable novel functionalities and applications. In this article, we investigate the phenomenon of electrical oscillations in a prototypical MIT system, vanadium dioxide (VO 2). We show that the key to such oscillatory behaviour is the ability to induce and stabilize a non-hysteretic and spontaneously reversible phase transition using a negative feedback mechanism. Further, we investigate the synchronization and coupling dynamics of such VO 2 based relaxation oscillators and show, via experiment and simulation, that this coupled oscillator system exhibits rich non-linear dynamics including charge oscillations that are synchronized in both frequency and phase. Our approach of harnessing a non-hysteretic reversible phase transition region is applicable to other correlated systems exhibiting metal-insulator transitions and can be a potential candidate for oscillator based non-Boolean computing.
UR - https://www.scopus.com/pages/publications/84901060572
UR - https://www.scopus.com/pages/publications/84901060572#tab=citedBy
U2 - 10.1038/srep04964
DO - 10.1038/srep04964
M3 - Article
AN - SCOPUS:84901060572
SN - 2045-2322
VL - 4
JO - Scientific reports
JF - Scientific reports
M1 - 4964
ER -