Featured Research

from universities, journals, and other organizations

Discovery of novel gold-based superconductor

Date:
April 27, 2014
Source:
National Institute for Materials Science
Summary:
A novel superconductor, SrAuSi3, which contains gold as a principal constituent element has been synthesized by researchers. Up until now, research on superconductivity with broken spatial inversion symmetry has mostly focused on compounds that contain a relatively heavy element M, such as rhodium (Rh), iridium (Ir), and platinum (Pt). However, using a high-pressure synthesis method, the team successfully synthesized for the first time a compound with the same general chemical formula but using gold (Au), which is even heavier, as element M.

Researchers at Japan's National Institute for Materials Science (NIMS) have synthesized a novel superconductor, SrAuSi3, which contains gold as a principal constituent element.

Led by Masaaki Isobe, a team consisting of Hiroyuki Yoshida, Koji Kimoto, Masao Arai and Eiji Muromachi recently searched for novel substances that lack spatial inversion symmetry in their crystal structures. They successfully synthesized a new compound, SrAuSi3, and found that it exhibits superconductivity at an absolute temperature of 1.6 K (-271.55C). This compound belongs to a group with a so-called BaNiSn3-type structure (general chemical formula: AMX3, where M represents a transition-metal element).

Up until now, research on superconductivity with broken spatial inversion symmetry has mostly focused on compounds that contain a relatively heavy element M, such as rhodium (Rh), iridium (Ir), and platinum (Pt). However, using a high-pressure synthesis method, the team successfully synthesized for the first time a compound with the same general chemical formula but using gold (Au), which is even heavier, as element M.

One of the predicted properties associated with superconductivity with broken spatial inversion symmetry is the extremely high upper critical field (the maximum magnetic field value at which superconductivity is sustained). The discovery of this substance is expected to contribute not only to an understanding of the mechanism involved in superconductivity with broken spatial inversion symmetry but also to the development of new superconducting materials that can be used in a magnetic field.

The results of this research were published in the March 25, 2014 issue (Volume 6, Issue 6) of Chemistry of Materials, a journal distributed by the American Chemical Society.


Story Source:

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


Journal Reference:

  1. Masaaki Isobe, Hiroyuki Yoshida, Koji Kimoto, Masao Arai, Eiji Takayama-Muromachi. SrAuSi3: A Noncentrosymmetric Superconductor. Chemistry of Materials, 2014; 26 (6): 2155 DOI: 10.1021/cm500032u

Cite This Page:

National Institute for Materials Science. "Discovery of novel gold-based superconductor." ScienceDaily. ScienceDaily, 27 April 2014. <www.sciencedaily.com/releases/2014/04/140427190726.htm>.
National Institute for Materials Science. (2014, April 27). Discovery of novel gold-based superconductor. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2014/04/140427190726.htm
National Institute for Materials Science. "Discovery of novel gold-based superconductor." ScienceDaily. www.sciencedaily.com/releases/2014/04/140427190726.htm (accessed July 25, 2014).

Share This




More Matter & Energy News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 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