Navigation Links
U of Toronto-led team induces high-temperature superconductivity in a semiconductor with Scotch tape
Date:9/11/2012

September 10, 2012-- Issued by the UNIVERSITY OF TORONTO
Under strict embargo by Nature Communications until Tuesday, September 11, 11 a.m. EST

An international team led by University of Toronto physicists has developed a simple new technique using Scotch poster tape that has enabled them to induce high-temperature superconductivity in a semiconductor for the first time. The method paves the way for novel new devices that could be used in quantum computing and to improve energy efficiency.

"Who would have thought simply sticking things together can generate entirely new effects?" said team leader and U of T physicist Ken Burch. High-temperature superconductors are materials that conduct electricity without heating up and losing energy at liquid nitrogen temperatures. They are currently in use for transmitting electricity with low loss and as the building blocks of the next generation of devices (quantum computers).

However, only certain compounds of iron, copper and oxygen or cuprates reveal high-temperature superconducting properties. Cuprates were believed to be impossible to incorporate with semi-conductors, and so their real-world use has been severely limited as has the exploration of new effects they may generate. For example, observing the phenomenon of the proximity effect wherein the superconductivity in one material generates superconductivity in an otherwise normal semi-conductor has been difficult because the fundamental quantum mechanics require the materials to be in nearly perfect contact.

That's where the poster tape comes in. "Typically, junctions between semi-conductors and superconductors were made by complex material growth procedures and fabricating devices with features smaller than a human hair," explains Burch. "However the cuprates have a completely different structure and complex chemical make-up that simply can't be incorporated with a normal semiconductor."

So instead, the team used Scotch poster tape and glass slides to place high-temperature superconductors in proximity with a special type of semi-conductor known as a topological insulator. Topological insulators have captured world-wide attention from scientists because they behave like semi-conductors in the bulk, but are very metallic at the surface. The result was induced superconductivity in these novel semi-conductors: a physics first.


'/>"/>

Contact: Kim Luke
kim.luke@utoronto.ca
416-978-4352
University of Toronto
Source:Eurekalert  

Related biology technology :

1. Semiconductors grown on graphene
2. New Torrent Suite Software Provides Highest Accuracy and 400 Base Pair Kits Deliver Broader Applications for Ion Semiconductor Sequencing
3. Worlds smallest semiconductor laser created by University of Texas scientists
4. Life Technologies to Accelerate Development of Ion Torrent Semiconductor Technology for Proteomic Applications in Research, Applied and Clinical Markets
5. Cooling semiconductor by laser light
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
U of Toronto-led team induces high-temperature superconductivity in a semiconductor with Scotch tape
(Date:10/11/2017)... Austin, TX (PRWEB) , ... October 11, 2017 ... ... in August compared the implantation and pregnancy rates in frozen and fresh ... the contribution of progesterone and maternal age to IVF success. , After comparing ...
(Date:10/10/2017)... ... 10, 2017 , ... Dr. Bob Harman, founder and CEO of VetStem ... The event entitled “Stem Cells and Their Regenerative Powers,” was held ... Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., Chief ...
(Date:10/9/2017)... 2017  BioTech Holdings announced today identification and ... ProCell stem cell therapy prevents limb loss in ... demonstrated that treatment with ProCell resulted in more ... compared to standard bone marrow stem cell administration.  ... reduction of therapeutic effect.  ...
(Date:10/7/2017)... Arizona (PRWEB) , ... October ... ... 15 years’ experience providing advanced instruments and applications consulting for microscopy and ... in-house expertise in application consulting, Nanoscience Analytical offers a broad range of ...
Breaking Biology Technology:
(Date:8/23/2017)... 23, 2017  The general public,s help is being enlisted in what,s ... live in and on the human body –and are believed to affect ... The Microbiome Immunity Project is ... starting with the gut. The project's goal is to help advance scientific ... ...
(Date:6/23/2017)... N.Y. , June 23, 2017  IBM (NYSE: ... dairy research, today announced a new collaboration using next-generation ... chances that the global milk supply is impacted by ... Cornell University has become the newest academic institution to ... a food safety initiative that includes IBM Research, Mars, ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
Breaking Biology News(10 mins):