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Title: Ab initio prediction of superdense tetragonal and monoclinic polymorphs of carbon

Journal Article · · Physical Review B
 [1];  [1];  [1];  [2]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Univ. of Nevada, Las Vegas, NV (United States)

The design and synthesis of three-dimensional denser carbons are one of the hot issues in condensed matter physics because of their fascinating properties. Here we identify by ab initio calculations several tetragonal and monoclinic polymorphs of carbon that adopt the t32, t32*, m32, and m32* structures in P4¯21c, P43212, P21/c, and C2 symmetry, respectively. These carbon polymorphs have large 32-atom unit cells in all-sp3 bonding networks comprising five- and six-membered rings that are dynamically stable, as verified by a phonon mode analysis. Electronic band structure calculations show that they are insulators with band gaps in the range of 5.19–5.41 eV, close to the calculated band gap of 5.34 eV for diamond. Remarkably, these carbon phases possess an extremely high atom number density exceeding that of diamond. Lastly, the present results establish different types of carbon phases and offer insights into their outstanding structural and electronic properties.

Research Organization:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001982
OSTI ID:
1332455
Alternate ID(s):
OSTI ID: 1330737
Journal Information:
Physical Review B, Vol. 94, Issue 17; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

References (47)

Generalized Gradient Approximation Made Simple journal October 1996
n-diamond from catalysed carbon nanotubes: synthesis and crystal structure journal November 2005
Helical microtubules of graphitic carbon journal November 1991
Structural investigation of thin films of diamondlike carbon journal October 1981
Projector augmented-wave method journal December 1994
Superhard Monoclinic Polymorph of Carbon journal April 2009
C60: Buckminsterfullerene journal November 1985
Tetragonal Allotrope of Group 14 Elements journal July 2012
Low-Temperature Phase Transformation from Graphite to s p 3 Orthorhombic Carbon journal February 2011
Structure and properties of silicon XII: A complex tetrahedrally bonded phase journal August 1995
Thermal equation of state of cubic boron nitride: Implications for a high-temperature pressure scale journal June 2007
Ab initio survey of the electronic structure of tetrahedrally bonded phases of silicon journal July 2008
High-pressure transformations of C 60 to diamond and sp 3 phases at room temperature and to sp 2 phases at high temperature journal October 1994
Superdense carbon, C8: supercubane or analog of .gamma.-silicon? journal February 1989
Crystal Structure of Cold Compressed Graphite journal February 2012
Experimental evidence of different crystalline forms in chemical vapor deposited diamond films journal November 1993
The Compressibility of Media under Extreme Pressures journal September 1944
Synthesis and crystal structure of n-diamond journal May 2007
New cubic carbon phase via graphitic sheet rumpling journal June 2012
The crystal structures of new forms of silicon and germanium journal June 1964
Ab initiomolecular dynamics for liquid metals journal January 1993
Preparation of diamond nanocrystals from catalysed carbon black in a high magnetic field journal November 2003
Modified Phases of Diamond Formed Under Shock Compression and Rapid Quenching journal August 1991
Ab initio theory of the lattice thermal conductivity in diamond journal September 2009
A New Dense Form of Solid Germanium journal January 1963
Cubic phases of carbon obtained from soot journal January 1993
Experimental evidence of new tetragonal polymorphs of silicon formed through ultrafast laser-induced confined microexplosion journal June 2015
Shock-Wave Exploration of the High-Pressure Phases of Carbon journal December 2008
Denser than diamond: Ab initio search for superdense carbon allotropes journal May 2011
Influence of the exchange screening parameter on the performance of screened hybrid functionals journal December 2006
Si-III (BC-8) crystal phase of Si and C: Structural properties, phase stabilities, and phase transitions journal August 1984
Properties of diamond under hydrostatic pressures up to 140 GPa journal February 2003
Pressure-constrained deformation and superior strength: Compressed graphite versus diamond journal September 2013
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
Lonsdaleite is faulted and twinned cubic diamond and does not exist as a discrete material journal November 2014
Superhard s p 3 carbon allotropes with odd and even ring topologies journal October 2011
Bonding Changes in Compressed Superhard Graphite journal October 2003
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Orthorhombic carbon allotrope of compressed graphite: Ab initio calculations journal January 2012
Body-Centered Tetragonal C 4 : A Viable s p 3 Carbon Allotrope journal March 2010
Kinetic Origin of Divergent Decompression Pathways in Silicon and Germanium journal April 2013
Computational prediction of body-centered cubic carbon in an all- s p 3 six-member ring configuration journal June 2015
Low-energy tetrahedral polymorphs of carbon, silicon, and germanium journal June 2015
Ground State of the Electron Gas by a Stochastic Method journal August 1980
Self-interaction correction to density-functional approximations for many-electron systems journal May 1981
First-principles calculations of the ferroelastic transition between rutile-type and CaCl 2 -type SiO 2 at high pressures journal October 2008
Formation mechanism of diamond nanocrystal from catalysed carbon black journal September 2004

Cited By (3)

A new carbon allotrope with orthorhombic symmetry formed via graphitic sheet buckling journal January 2018
Stochastic generation of complex crystal structures combining group and graph theory with application to carbon journal January 2018
Stochastic generation of complex crystal structures combining group and graph theory with application to carbon text January 2018