Next Article in Journal
Chirality Control in Crystalline Ni(II) Complexes of Thiophosphorylated Thioureas
Next Article in Special Issue
Double Layer Conducting Salts: (CNB-EDT-TTF)4X, X = ClO4, ReO4, and SbF6; Electrical Transport and Infrared Properties
Previous Article in Journal
Evolution of Microstructure, Texture and Topography during Cold Rolling and Recrystallization of Ni–5at.%W Alloy Substrate for Coated Conductors
Previous Article in Special Issue
Unified Assessment of the Effects of Van der Waals Interactions on the Structural and Electronic Properties of Some Layered Organic Solids κ-(BEDT-TTF)2X
Open AccessArticle

Control of Organic Superconducting Field-Effect Transistor by Cooling Rate

1
Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan
2
RIKEN, Wako, Saitama 351-0198, Japan
*
Authors to whom correspondence should be addressed.
Crystals 2019, 9(11), 605; https://doi.org/10.3390/cryst9110605
Received: 12 October 2019 / Revised: 6 November 2019 / Accepted: 13 November 2019 / Published: 19 November 2019
(This article belongs to the Special Issue Structure and Properties of Molecular Conductors)
A new superconducting field-effect transistor (FET) in the vicinity of bandwidth-controlled Mott transition was developed using molecular strongly correlated system κ-(BEDT-TTF)2Cu[N(CN)2]Br [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] laminated on CaF2 substrate. This device exhibited significant cooling-rate dependence of resistance below about 80 K, associated with glass transition of terminal ethylene group of BEDT-TTF molecule, where more rapid cooling through glass transition temperature leads to the decrease in bandwidth. We demonstrated that the FET properties such as ON/OFF ratio and polarity can be controlled by utilizing cooling rate. Our result may give a novel insight into the design of molecule-based functional devices. View Full-Text
Keywords: molecular conductor; strongly correlated electron system; superconductivity; Mott insulator; field-effect transistor molecular conductor; strongly correlated electron system; superconductivity; Mott insulator; field-effect transistor
Show Figures

Figure 1

MDPI and ACS Style

Kawaguchi, G.; Yamamoto, H.M. Control of Organic Superconducting Field-Effect Transistor by Cooling Rate. Crystals 2019, 9, 605.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop