Navigation Links
A deeper look at interfaces
Date:1/15/2014

n two waves of identical wavelength interfere with one another: one is the incident x-ray and the other is the x-ray reflected by a mirror. Interactions between standing waves and core-level electrons reveal much about the properties of each atomic species in a sample. ARPES from the outer valence levels is the long-standing spectroscopic workhorse for the study of electronic structure. X-rays striking a material surface or interface cause the photoemission of electrons at angles and kinetic energies that can be measured to obtain detailed electronic energy levels of the sample. While an extremely powerful tool, ARPES, a soft x-ray technique, is primarily limited to the study of near-surface atoms. It's harder x-ray cousin, HARPES, makes use of more energetic x-rays to effectively probe subsurface interfaces, but the addition of the standing wave capability provides a much desired depth selectivity.

"The standing wave can be moved up and down in a sample simply by rocking the angle of incidence around the Bragg angle of the mirror," says Alexander Gray, a former member of Fadley's UC Davis research group and affiliate with Berkeley Lab's Materials Sciences Division, who is now a postdoctoral associate at Stanford/SLAC. "Observing an interface between a ferromagnetic conductor (lanthanum strontium manganite) and an insulator (strontium titanate), which constitute a magnetic tunnel junction used in spintronic logic circuits, we've shown that changes in the electronic structure can be reliably measured, and that these changes are semi-quantitatively predicted by theory at several levels. Our results point to a much wider use of SWARPES in the future for studying the electronic properties of buried interfaces of many different kinds."


'/>"/>
Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A deeper look at interfaces
(Date:11/24/2014)... 2014  Spherix Incorporated (Nasdaq: SPEX ... fostering and monetization of intellectual property, today provided ...  Case No. 3:13-cv-03494-M and  Spherix v. Uniden Corporation ... the United States District Court for the Northern ... On November 21, 2014 the Markman ...
(Date:11/22/2014)... 2014 During his lifetime Richard L. ... to surround himself with great people and take risks ... friends often marveled at his extraordinarily courageous attitude when ... and -- even with his death impending—that’s how he ... that would ultimately take his life. , Carrying on ...
(Date:11/22/2014)... (PRWEB) November 21, 2014 On November ... at the 2014 Emerging Medical Technologies Summit in San ... Awards. Widely regarded among Silicon Valley investors and ... device innovation, the win also positions Briteseed to ... Innovator competition in 2015 and compete with other elite ...
(Date:11/22/2014)... , November 21, 2014 ... wechselt als Chief Commercial Officer zu KLOX    ... der Unternehmensentwicklung und Chief Financial Officer bestellt    ... mit der Vermarktung seines jüngst zugelassenen Behandlungssystems zur Wundheilung ... ("KLOX" bzw. das "Unternehmen") ist sehr erfreut, die folgenden ...
Breaking Biology Technology:Markman Hearing Held as Scheduled in VTech and Uniden Cases 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 3Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 2Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 3KLOX Technologies meldet Neubesetzung von Führungspositionen 2KLOX Technologies meldet Neubesetzung von Führungspositionen 3KLOX Technologies meldet Neubesetzung von Führungspositionen 4KLOX Technologies meldet Neubesetzung von Führungspositionen 5
... MA - In work that could jumpstart the promising field ... body to treat a variety of diseases and tissue defects, ... that could solve one of the key challenges associated with ... transplantation. In the work, reported in the journal ...
... Optimer Pharmaceuticals, Inc. (Nasdaq: OPTR ) announced ... has published results from the North American Phase 3 trial ... fidaxomicin as a treatment for patients with Clostridium difficile ... significantly reduced recurrence rates and increased global cure rates when ...
... ST. LOUIS, Feb. 2, 2011 Sigma Life Science, the ... SIAL ), today announced that its SAGE Labs initiative ... genomes for six of the most widely used strains of ... generate and analyze sequence data using next generation sequencing systems, ...
Cached Biology Technology:Engineered cells could usher in programmable cell therapies 2Engineered cells could usher in programmable cell therapies 3The New England Journal of Medicine Publishes Results of Fidaxomicin Phase 3 Trial Showing Significantly Lower Recurrence Rates and Improved Global Cure Rates Compared to Vancomycin in Patients with Clostridium difficile Infection (CDI) 2The New England Journal of Medicine Publishes Results of Fidaxomicin Phase 3 Trial Showing Significantly Lower Recurrence Rates and Improved Global Cure Rates Compared to Vancomycin in Patients with Clostridium difficile Infection (CDI) 3The New England Journal of Medicine Publishes Results of Fidaxomicin Phase 3 Trial Showing Significantly Lower Recurrence Rates and Improved Global Cure Rates Compared to Vancomycin in Patients with Clostridium difficile Infection (CDI) 4The New England Journal of Medicine Publishes Results of Fidaxomicin Phase 3 Trial Showing Significantly Lower Recurrence Rates and Improved Global Cure Rates Compared to Vancomycin in Patients with Clostridium difficile Infection (CDI) 5The New England Journal of Medicine Publishes Results of Fidaxomicin Phase 3 Trial Showing Significantly Lower Recurrence Rates and Improved Global Cure Rates Compared to Vancomycin in Patients with Clostridium difficile Infection (CDI) 6Sigma Life Science Collaborates with Cofactor Genomics to Develop Publically Available Rat Genome Database 2Sigma Life Science Collaborates with Cofactor Genomics to Develop Publically Available Rat Genome Database 3Sigma Life Science Collaborates with Cofactor Genomics to Develop Publically Available Rat Genome Database 4
(Date:11/7/2014)... led by Dr. Debra Auguste, associate professor, biomedical ... The City College of New York, have identified ... for one of the most aggressive forms of ... have a high mortality rate owing to aggressive ... therapeutic options. However, Professor Auguste,s team, discovered the ...
(Date:11/7/2014)... 6, 2014 Leading Biometric companies aim ... security revolutionizing online transactions.  Companies in focus today are: NXT-ID, ... BABA ), Google Inc. (NASDAQ: GOOG ... (NASDAQ: EBAY ) and MasterCard Inc. (NYSE: MA) ... NXTDW), a biometric authentication company focused on the growing mobile ...
(Date:11/6/2014)... of metastasis, yet progress in preventing and treating ... been particularly challenging to design drugs that work ... systems biology at Harvard Medical School. , ... already metastasized." , Gujral and colleagues have now ... better understand how metastasis begins. Their findings may ...
Breaking Biology News(10 mins):Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 3Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 4Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 5Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 6Migration negation 2Migration negation 3
... A tiny, fast switch that uses water droplets to create ... mechanism found in palm beetles. , The new beetle-inspired ... on the scale of a micron -- a millionth of ... larger applications like powerful adhesive bonding. Like the transistor, whose ...
... that the brains of alcoholics are smaller, lighter ... speakers at the October 2004 Congress for the ... Mannheim, Germany reviewed what is known about the ... shrinkage. Proceedings are published in the June issue ...
... and Infectious Diseases (NIAID), part of the National Institutes ... which cause such serious diseases as West Nile fever, ... defenses in different ways depending on whether they are ... to new approaches to developing vaccines and treatments against ...
Cached Biology News:Beetle-inspired switch uses water for bonding 2Investigating 'brain shrinkage' in alcoholics 2Investigating 'brain shrinkage' in alcoholics 3Investigating 'brain shrinkage' in alcoholics 4Investigating 'brain shrinkage' in alcoholics 5Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses 2Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses 3
DNA fragmentation factor & Inhibitor of CAD...
Component in MasterPure™ Purification Kits...
Anti-gp340 Monoclonal Antibody Description: 100 g Research Focus: cancer & cell proliferation Storage: -20C Shipping Temperature: 4C...
Mouse anti-HIV-Imn PND Class: Antibody Product Group: Bacterial and Viral Antigen...
Biology Products: