Featured Research

from universities, journals, and other organizations

Photoemission 100 years after Einstein

Date:
May 1, 2005
Source:
Institute of Physics
Summary:
In 1921 Einstein won the Nobel Prize not for his work on relativity, but for solving a puzzle that had baffled scientists since 1887 -- the photoelectric effect. Today (Friday 29th April 2005) New Journal of Physics (NJP) published a special celebratory focus issue containing a series of new papers looking at the latest applications of the phenomenon first explained by Einstein one hundred years ago. NJP is co-owned by the Institute of Physics and Deutsche Physikalische Gesellschaft (the German Physical Society).

In 1921 Einstein won the Nobel Prize not for his work on relativity, but for solving a puzzle that had baffled scientists since 1887 -- the photoelectric effect. In one of the three ground-breaking papers he published in 1905 he explained it in one astonishing blow: the light is quantized. His work was the first step in launching quantum theory.

April 29, 2005 New Journal of Physics (NJP) published a special celebratory focus issue containing a series of new papers looking at the latest applications of the phenomenon first explained by Einstein one hundred years ago.

First noticed by Hertz in 1887, the photoelectric effect is the emission of electrons from a surface (usually metallic) on exposure to electromagnetic radiation (such as visible light and ultraviolet radiation).

On 17 March 1905 -- three days after his 26th birthday -- Einstein submitted a paper titled "A heuristic point of view concerning the production and transformation of light" to Annalen der Physik. In it he suggested that light can be thought of as individual packets or "quanta" of energy. This hypothesis, which had been tentatively proposed by Max Planck a few years earlier, directly challenged the wave theory of light. However, Einstein was able to use the idea to explain certain puzzles about the way that light, or other electromagnetic radiation, ejected electrons from a metal via the photoelectric effect.

"The arguments Einstein used in the photoelectric and subsequent radiation theory are staggering in their boldness and beauty," says Frank Wilczek, a theorist at the Massachusetts Institute of Technology who shared the 2004 Nobel Prize for Physics. "He put forward revolutionary ideas that both inspired decisive experimental work and helped launch quantum theory." Although not fully appreciated at the time, Einstein's work on the quantum nature of light was the first step towards establishing the wave-particle duality of quantum particles.

Photoemission is now one of the major tools for detailed investigations of the electronic structure of matter and contributes heavily to our understanding of the properties of matter. It provides the complete set of quantum numbers for electrons in a solid and has been called the "smoking gun" for solving difficult puzzles in condensed matter physics.

This celebratory focus issue of NJP shows examples of the rich variety of applications of the phenomenon first explained by Einstein one hundred years ago.

Franz Himpsel, guest editor of the issue, said: "The papers in this special issue demonstrate some of the new directions in photoemission. For example, how scientists are now designing fast electronic devices using "hot electrons," and complex materials such as high-temperature superconductors which has opened a new field of tailored electronic materials where the electrons are highly correlated."

19 papers will be published on 29th April 2005 in New Journal of Physics as part of a celebratory focus issue on 'Photoemission and Electronic Structure' edited by Franz Himpsel and Per-Olof Nilsson.


Story Source:

The above story is based on materials provided by Institute of Physics. Note: Materials may be edited for content and length.


Cite This Page:

Institute of Physics. "Photoemission 100 years after Einstein." ScienceDaily. ScienceDaily, 1 May 2005. <www.sciencedaily.com/releases/2005/04/050430222030.htm>.
Institute of Physics. (2005, May 1). Photoemission 100 years after Einstein. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2005/04/050430222030.htm
Institute of Physics. "Photoemission 100 years after Einstein." ScienceDaily. www.sciencedaily.com/releases/2005/04/050430222030.htm (accessed April 24, 2014).

Share This



More Matter & Energy News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Obama Plays Soccer With Japanese Robot

Raw: Obama Plays Soccer With Japanese Robot

AP (Apr. 24, 2014) President Obama briefly played soccer with a robot during his visit to Japan on Thursday. The President has been emphasizing technology along with security concerns during his visit. (April 24) Video provided by AP
Powered by NewsLook.com
Obama Encourages Japanese Student-Scientists

Obama Encourages Japanese Student-Scientists

AP (Apr. 24, 2014) President Obama spoke with student innovators in Japan and urged them to take part in increased opportunities for student exchanges with the US. (April 24) Video provided by AP
Powered by NewsLook.com
UN Joint Mission Starts Removing Landmines in Cyprus

UN Joint Mission Starts Removing Landmines in Cyprus

AFP (Apr. 23, 2014) The UN mission in Cyprus (UNFICYP) led a mine clearance demonstration on Wednesday in the UN-controlled buffer zone where demining operations are being conducted near the Cypriot village of Mammari. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Air Force: $4.2B Saved from Grounding A-10s

Air Force: $4.2B Saved from Grounding A-10s

AP (Apr. 23, 2014) Speaking about the future of the United States Air Force, Chief of Staff Gen. Mark Welsh says the choice to divest the A-10 fleet was logical and least impactful. (April 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins