Navigation Links
A new class of electron interactions in quantum systems
Date:1/23/2012

Physicists at the University of New South Wales have observed a new kind of interaction that can arise between electrons in a single-atom silicon transistor.

The findings, to be published this week in the journal Physical Review Letters, offer a more complete understanding of the mechanisms for electron transport in nanostructures at the atomic level.

"We have been able to study some of the most complicated transport mechanisms that can arise up to the single atom level," says lead author Dr Giuseppe C. Tettamanzi, from the School of Physics at UNSW.

The results contained in this study open the door for new quantum electronic schemes inwhich it is the orbital nature of the electrons and not their spin or their charge that plays a major role, he says.

The study, in collaboration with scientists from the ICMM in Madrid and the Kavli Institute in The Netherlands, describes how a single electron bound to a dopant atom in a silicon matrix can interact with many electrons throughout the transistor.

In these geometries, electron-electron interactions can be dominated by something called the Kondo effect. Conventionally, this arises from the spin degree of freedom, which represents an angular momentum intrinsic to each electron and is always in the up or in the down state.

However, researchers also observed that similar interactions could arise through the orbital degree of freedom of the electron. This describes the wave-like function of an electron and can be used to help determine an electrons' probable location around the atom's nucleus.

Importantly, by applying a strong magnetic field, the researchers were able to tune thiseffect to eliminate the spin-spin interactions while preserving the orbital-orbital interactions.

"By tuning the effect in two different symmetries of the fundamental state of the systemwe have observed a symmetry crossover identical to those seen in high-energy ph
'/>"/>

Contact: Giuseppe Tettamanzi
g.tettamanzi@unsw.edu.au
61-040-542-1886
University of New South Wales
Source:Eurekalert

Page: 1 2

Related biology technology :

1. LoneStar Heart Acquires Worldwide Exclusive Rights to New Class of Small Molecules That May Lead to New Treatments for Diabetes
2. Omeros Announces it has Unlocked 30 Percent of Class A Orphan GPCRs
3. Veracyte Announces Medicare Coverage for Its Afirma® Gene Expression Classifier for Improved Thyroid Nodule Diagnosis
4. StemCyte Adds World Class Talent to its North America and Global Operations
5. Omeros Announces It Has Unlocked Over 20 Percent of Class A Orphan GPCRs
6. Dual-acting class of antimalarial compounds discovered with potential to prevent and treat malaria
7. New Class of Stem Cell-Like Cells Discovered in Spinal Cord Offers Possibilities for Spinal Cord Repair
8. New Data Suggest Veracytes Afirma® Gene Expression Classifier Cost-Effectively Resolves Inconclusive Thyroid Nodule FNA Biopsy Results
9. SynCo Bio Partners Expands the Class A Zone in its Aseptic Filling Facility
10. HCCS Releases Classroom Management Features for Low Cost Learning Management System
11. Ohios Bioscience Industry Thrives With World-Class Industry Collaboration
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2015)... Japan (Q2 2015: +14% CER / 20% of sales) ... in China , as well as solid contributions from Korea, ... Europe / Middle East / ... in Germany , Turkey and the ... 49% of sales) grew 11%, excluding U.S. HPV sales, on demand across all ...
(Date:7/29/2015)... , July 29, 2015 ... has announced the addition of the "Global ... their offering. The Global Biosimilars Market, ... of the rapidly growing biosimilars market. With the ... striving to minimize costs, biosimilars are being viewed ...
(Date:7/29/2015)... 29, 2015  Indivior PLC (LON: INDV) today announced ... spray was accepted and received Priority Review by the ... of opioid overdose. This naloxone nasal spray comes as ... optimal absorption into the nasal mucosa. 1 The ... individuals may be better equipped to help an opioid ...
(Date:7/29/2015)... Bruno, CA. (PRWEB) , ... July 29, 2015 ... ... agreement with PRC Clinical, a Silicon Valley-based CRO specializing in Clinical ... advisory services, and patient recruitment services. The core expertise of PRC Clinical is ...
Breaking Biology Technology:QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5CSSi LifeSciences And PRC Clinical Join Forces To Offer Extended Clinical Trial Services 2CSSi LifeSciences And PRC Clinical Join Forces To Offer Extended Clinical Trial Services 3
... ,Amsterdam Molecular Therapeutics (Euronext: AMT), a leader in ... it will release its financial,results for the first ... 2008 at,noon Central European Time (CET). To discuss ... at 2:00 p.m. CET. Netherlands dial in:,0800-949-4517 (toll ...
... Cadence Pharmaceuticals,Inc. (Nasdaq: CADX ), a ... product candidates principally,for use in the hospital setting, ... Schroeder will present the company,s corporate,overview at the ... America,s 2008 Specialty Pharmaceuticals Conference at the ...
... SAN FRANCISCO, Aug. 4 Medivation, Inc.,(Nasdaq: MDVN ... and,webcast with management to discuss second quarter 2008 progress ... 2008, at 4:30 p.m. Eastern,time. A financial results press ... be released after markets close on August 11, 2008., ...
Cached Biology Technology:Cadence Pharmaceuticals' CEO Theodore Schroeder to Present at Two Investment Conferences During the Month of August 2008 2
(Date:7/8/2015)... -- The consumer products industry for innovative tech ... such as wearables, smart wallets & other smart technology are ... continues to rapidly grow.  Biometrics & Wearable Device Companies in ... Inc. (NASDAQ: GOOG ), Apple Inc. (NASDAQ: AAPL ... GPRO ) and Baidu Inc. (NASDAQ: BIDU ) ...
(Date:7/7/2015)... MOUNTAIN VIEW, Calif. , July 7, 2015 ... mobile biometrics market, Frost & Sullivan recognizes Credence ... & Sullivan Entrepreneurial Company of the Year ... product suite to aid in its mission of ... and under-recognized populations globally. As Credence ID was ...
(Date:7/2/2015)... June 25, 2015 ... addition of the "Natural Language Processing Market ... IVR, OCR, Pattern & Image Recognition) - Worldwide ... The key vendors occupying the market ... Corporation, Microsoft Corporation, NetBase Solutions, SAS Institute Inc., ...
Breaking Biology News(10 mins):Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 2Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 3Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 4Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 5Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2
... Researchers at the University of Iowa Roy J. ... taken another step toward a potential treatment for ... interference (RNAi), the scientists reduced levels of the ... the movement and neurological abnormalities normally associated with ...
... virologists headed by Professor Hans-Georg Kräusslich at Heidelberg ... of Applied Tumor Virology of the Deutsches Krebsforschungszentrum ... first to label Human Immunodeficiency Viruses (HIV) for ... the virus. , The labeling permits scientists to ...
... Nations Forum on Forests, now under way, could result ... some environmentalists worry, merely an agreement to continue negotiations. ... U.N. forum is international environmental policy expert Matthew Auer, ... conclude with one or more concrete outcomes, such as ...
Cached Biology News:U. Iowa researchers improve Huntington's disease symptoms in mice 2U. Iowa researchers improve Huntington's disease symptoms in mice 3New Species of Coral Discovered Off Southern California 2U.N. mulls the protection of Earth's forests 2
... , Maintenance 112 days/each ... Immunizations/Boost injections x5 /each , ... , Production bleed (25 ml blood =12 ... 100 ml blood (~50 ml serum) x1 each , ...
Mouse VCAM-1/CD106 MAb (Clone 112702)...
FluoSpheres® biotin-labeled microspheres, 0.2 µm, yellow-green fluorescent (505/515) *1% solids*...
Request Info...
Biology Products: