DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Theoretical Design of Robust Ferromagnetism and Bipolar Semiconductivity in Graphene-Based Nanoroads

Journal Article · · Journal of Physical Chemistry. C
 [1];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Univ. of Science and Technology of China, Hefei (China). International Center for Quantum Design of Functional Materials (ICQD), Hefei National Lab. for Physical Sciences at the Microscale (HFNL)
  2. Univ. of Louisville, KY (United States). Dept. of Physics and Astronomy
  3. Univ. of Science and Technology of China, Hefei (China). International Center for Quantum Design of Functional Materials (ICQD), Hefei National Lab. for Physical Sciences at the Microscale (HFNL); Univ. of Science and Technology of China, Hefei (China). Synergetic Innovation Center of Quantum Information and Quantum Physics
  4. Univ. of Science and Technology of China, Hefei (China). International Center for Quantum Design of Functional Materials (ICQD), Hefei National Lab. for Physical Sciences at the Microscale (HFNL); Univ. of Science and Technology of China, Hefei (China). Synergetic Innovation Center of Quantum Information and Quantum Physics; Chinese Academy of Sciences (CAS), Beijing (China). Key Lab. of Strongly-Coupled Quantum Matter Physics

The search for graphene-based materials for spintronics applications has intensified in recent years, and numerous designs have been proposed based on various modifications to pristine graphene. Despite the tremendous progress made in the past, finding a design that can be realized in practice remains a challenging task. Encouraged by recent experimental breakthroughs, here we propose a feasible scheme to realize graphene-based magnetic nanoroads. This new material consists of a half-hydrogenated graphene nanoroad embedded in a fully hydrogenated graphene sheet. Using first-principles density functional theory calculations, we demonstrate that such a design can convert nonmagnetic pristine graphene into a bipolar ferromagnetic semiconductor. More importantly, as a result of areal magnetization enabled by half-hydrogenation, the overall magnetism of such a nanoroad is very robust against a variation of either its width or orientation. We also propose a simple design of an all-electric controlled device based on the new material for the generation and regulation of a fully spin-polarized electric current.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
OSTI ID:
1482392
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 44 Vol. 121; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

A unified geometric rule for designing nanomagnetism in graphene journal December 2008
(C1.04H)n: A nearly perfect pure graphane journal October 2016
Magnetism in graphene induced by hydrogen adsorbates journal July 2012
Lower Electric Field-Driven Magnetic Phase Transition and Perfect Spin Filtering in Graphene Nanoribbons by Edge Functionalization journal November 2016
Hydrogenation of Graphene by Reaction at High Pressure and High Temperature journal July 2015
Half-Metallicity in Edge-Modified Zigzag Graphene Nanoribbons journal April 2008
Basic Insights into Tunable Graphene Hydrogenation journal January 2016
Electronic Structure and Stability of Semiconducting Graphene Nanoribbons journal December 2006
Enhanced Half-Metallicity in Edge-Oxidized Zigzag Graphene Nanoribbons journal August 2007
Synthesis of Carbon Nanotubes by Rolling up Patterned Graphene Nanoribbons Using Selective Atomic Adsorption journal October 2007
Graphene NanoFlakes with Large Spin journal January 2008
Superior Thermal Conductivity of Single-Layer Graphene journal March 2008
Comment on Graphene Nanoflakes with Large Spin:  Broken-Symmetry States journal February 2008
Spin Transport in High-Quality Suspended Graphene Devices journal June 2012
Direct Observation of Ordered Configurations of Hydrogen Adatoms on Graphene journal January 2015
Chemical Functionalization of Graphene with Defects journal December 2008
Electronics and Magnetism of Patterned Graphene Nanoroads journal March 2009
Ferromagnetism in Semihydrogenated Graphene Sheet journal November 2009
Toward High Throughput Interconvertible Graphane-to-Graphene Growth and Patterning journal September 2010
Functionalized Graphene for High-Performance Two-Dimensional Spintronics Devices journal March 2011
Searching for Magnetism in Hydrogenated Graphene: Using Highly Hydrogenated Graphene Prepared via Birch Reduction of Graphite Oxides journal June 2013
Two-dimensional gas of massless Dirac fermions in graphene journal November 2005
Experimental observation of the quantum Hall effect and Berry's phase in graphene journal November 2005
Half-metallic graphene nanoribbons journal November 2006
Electronic spin transport and spin precession in single graphene layers at room temperature journal July 2007
Room-temperature magnetic order on zigzag edges of narrow graphene nanoribbons journal October 2014
Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals journal April 2017
Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit journal June 2017
Direct writing of electronic devices on graphene oxide by catalytic scanning probe lithography journal January 2012
Prediction of very large values of magnetoresistance in a graphene nanoribbon device journal June 2008
Graphene spintronics journal October 2014
Room-temperature ferromagnetism in graphite driven by two-dimensional networks of point defects journal October 2009
Electrochemical exfoliation of graphite in quaternary ammonium-based deep eutectic solvents: a route for the mass production of graphane journal January 2015
Structural stability and band gap tunability of single-side hydrogenated graphene from first-principles calculations journal January 2015
Bipolar magnetic semiconductors: a new class of spintronics materials journal January 2012
Graphene magnet realized by hydrogenated graphene nanopore arrays journal October 2011
Emergence of magnetism in graphene materials and nanostructures journal April 2010
Spin transport in hydrogenated graphene journal May 2015
Special points for Brillouin-zone integrations journal June 1976
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Electronic structure and magnetic properties of graphitic ribbons journal February 2007
Graphane: A two-dimensional hydrocarbon journal April 2007
Suppression of spin polarization in graphene nanoribbons by edge defects and impurities journal April 2008
Graphene Antidot Lattices: Designed Defects and Spin Qubits journal April 2008
Magnetism in Disordered Graphene and Irradiated Graphite journal July 2008
Intrinsic Half-Metallicity in Modified Graphene Nanoribbons journal March 2009
Spatially Separated Spin Carriers in Spin-Semiconducting Graphene Nanoribbons journal August 2013
Two theorems on the Hubbard model journal March 1989
Generalized Gradient Approximation Made Simple journal October 1996
Magnetism in Graphene Nanoislands journal October 2007
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
Graphene: Status and Prospects journal June 2009
Control of Graphene's Properties by Reversible Hydrogenation: Evidence for Graphane journal January 2009
Atomic-scale control of graphene magnetism by using hydrogen atoms journal April 2016
Nature of Graphene Edges: A Review journal July 2011

Cited By (2)

Computational Prediction of the Low‐Temperature Ferromagnetic Semiconducting 2D SiN Monolayer journal September 2019
Emerging chemical strategies for imprinting magnetism in graphene and related 2D materials for spintronic and biomedical applications journal January 2018