Navigation Links
Zeroing in on quantum effects
Date:5/28/2010

HOUSTON -- (May 28, 2010) -- A team of U.S. and Chinese physicists are zeroing in on critical effects at the heart of the latest high-temperature superconductors -- but they're using other materials to do it.

In new research appearing online today in the journal Physical Review Letters, the Rice University-led team offers new evidence about the quantum features of the latest class of high-temperature superconductors, a family of iron-based compounds called "pnictides" (pronounced: NICK-tides).

"In correlated electron systems like the pnictides and their parent compounds, the electrons are caught in a competition between forces," said Rice physicist Qimiao Si, a co-author of the study. "On the one hand, they are compelled to move around, and on the other, they are forced to arrange themselves in a particular way because of their desire to repel one another. In this study, we varied the ratio between these competing forces in an effort to find the tipping point where one takes over from the other."

The aim of the research is to better understand the processes that lead to high-temperature superconductivity. If better understood and developed, high-temperature superconductors could revolutionize electric generators, MRI scanners, high-speed trains and other devices. In today's wiring, electricity is lost due to resistance and heating. This happens because electrons bump and ricochet from atom to atom as they pass down wires, and they lose a bit of energy in the form of heat each time they bounce around.

Almost a century ago, physicists discovered materials that could conduct electrons without losing energy to resistance. These "superconductors" had to be very cold, and it took physicists nearly 50 years to come up with an explanation for them: The electron-electron repulsion in these low-temperature superconductors was so weak that with the mediation of lattice vibrations, electrons overcame it, paired up and glided freel
'/>"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Untangling the quantum entanglement behind photosynthesis
2. Digging deep into diamonds, applied physicists advance quantum science and technology
3. Scientists find quantum mechanics at work in photosynthesis
4. Diamonds may be the ultimate MRI probe, say Quantum physicists
5. Covering the bases: Quantum effect may hold promise for low-cost DNA sequencing, sensor applications
6. Rice eyes risks of quantum dots
7. New technique is quantum leap forward in understanding proteins
8. Strained quantum dots show new optical properties
9. Study shows quantum dots can penetrate skin through minor abrasions
10. Europe gets together to harness quantum physics
11. A gentle touch for better control, a quantum mechanical con, and milestone PRL papers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/7/2014)... associate professor, biomedical engineering, in the Grove School ... York, have identified a molecule that could lead ... aggressive forms of breast cancer. , Triple negative ... owing to aggressive proliferation and metastasis and a ... team, discovered the overexpression of intercellular adhesion molecule-1 ...
(Date:11/6/2014)... for a predator. Except when that predator runs so fast ... to its size, is the fastest creature on Earth. Some ... second (at about five miles per hour). The fastest human ... gold from the tiger beetle, a person would have to ... has a problem. At peak speeds, everything becomes a blur. ...
(Date:11/4/2014)... University of Utah engineers developed the first room-temperature fuel ... electricity without needing to ignite the fuel. These new ... off-grid power and sensors. , A study of the ... Society journal ACS Catalysis . , Fuel cells ... a fuel and an oxygen-rich source such as air. ...
Breaking Biology News(10 mins):The tiger beetle: Too fast to see 2Jet-fueled electricity at room temperature 2
... understand molecular mechanisms underlying various diseases, notably cancer, have ... of patients for the expression status of thousands of ... of each gene in the genome, measured as the ... Since each of the tens of thousands of genes ...
... essayist as we have."New York Times Book Review "Carl ... today. A Planet of Viruses is an important primer on ... other times shocking, and always accessible. Whether discussing the common ... oceans, or the world,s viral future as seen through our ...
... 5, 2011 In their eagerness to cut nitrogen ... of Mexico, people have often sought simple explanations for ... or farmers who apply too much fertilizer, which then ... research that examined phosphorus loading from all 1768 counties ...
Cached Biology News:Medusa-structure of gene regulatory network: Dominance of transcription factors in cancer subtypes 2Medusa-structure of gene regulatory network: Dominance of transcription factors in cancer subtypes 3Medusa-structure of gene regulatory network: Dominance of transcription factors in cancer subtypes 4A planet of viruses 2Study probes sources of Mississippi River phosphorus 2Study probes sources of Mississippi River phosphorus 3
(Date:11/26/2014)... The North America Thermal Protective Clothing Market ... analysis of the growth trends and revenue forecasts. ... by 2018, growing at a CAGR of 7.1% ... TOC of the North America Thermal Protective Clothing ... in-depth analysis and industry segmentation supported by various ...
(Date:11/26/2014)... On January, 14, 2015, UMBC’s ... D.C. science community to the UMBC campus for a ... the Protein Society, will take place from 9 a.m. ... Through discussion, presentations and workshops, the free symposium ... their role in the industry and the future of ...
(Date:11/26/2014)... Silicon Valley Electronic Data Capture (EDC) ... Alliance , provider of clinical research and data management ... addition to its CRO Partnership Program, Clinovo expands ... India. , “We have found Clinovo’s ClinCapture to ... platform which is both user friendly and easy to ...
(Date:11/26/2014)... SoundConnect , an award winning unified communications ... Darren Suders has joined the team as Director of ... partner program through innovative offerings, consistent partner ... brings more than 10-years of channel telecommunication experience to ... from policy development, to partner education and to expansion. ...
Breaking Biology Technology:The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3RPM Alliance Joins Clinovo’s CRO Partnership Program, Further Strengthening Its Presence in Southern California and India 2SoundConnect Appoints Director of Channel Development & Sales 2
... Eric Schmidt, then the CTO of Sun Microsystems, gave ... language called Java. A thoroughly modern development platform for ... Java promised to ease programming headaches, the biggest of ... another. , ,Today, we can debate whether Java ...
... believes in reincarnation - in the business sense. , ,What ... reiterations of his company, Paragon Development Systems, Inc. , ... with a very important streak intact - 19 consecutive years ... a memory chip broker that managed to survive 20 years ...
... Madison, Wis. - Gov. Jim Doyle ... million in state funds for the development of renewable ... - which includes tax credits, low-interest loans, and grants ... the sale of state bonds - would leverage an ...
Cached Biology Technology:Java's undeniable impact on the Web 2Java's undeniable impact on the Web 3PDS survives with technological reinvention 2PDS survives with technological reinvention 3PDS survives with technological reinvention 4PDS survives with technological reinvention 5Doyle announces $80M renewable energy strategy 2Doyle announces $80M renewable energy strategy 3Doyle announces $80M renewable energy strategy 4
Contained in EZ-Tn5™ Kits and are available separately for sequencing of an insertion site....
Request Info...
Rabbit polyclonal to Syntrophin alpha 1 ( Abpromise for all tested applications). entrezGeneID: 6640 SwissProtID: Q13424...
Mouse monoclonal [4i97] to HLA Class 1 A25 ( Abpromise for all tested applications). Antigen: Full length protein (Human): HLA Class 1 Antigen-A25. Swiss Protein ID: P18462...
Biology Products: