Characteristics of a sensitive micro-Hall probe fabricated on chemical vapor deposited graphene over the temperature range from liquid-helium to room temperature

We have investigated the transport and noise properties of a micron-sized Hall probe, fabricated on chemical vapor deposited (CVD) graphene, from 300 K to 4.2 K. The field sensitivity of the Hall probe was tunable within ∼0.031-0.12 Ω/G, while the field resolution could reach ∼0.43-0.09 G/Hz1/2 at room temperature. The characteristics of graphene Hall probes (GHPs) were found to be comparable to present Hall sensors. Our results indicate that the fundamental limitation of the field sensitivity and the field resolution are respectively restricted by intrinsic and extrinsic defects. Our study paves the way for the use of CVD GHPs for scanning Hall probe with high field sensitivity and submicron spatial resolution at room temperature.

[1]  S. Banerjee,et al.  Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils , 2009, Science.

[2]  Hemantha K. Wickramasinghe,et al.  High‐resolution magnetic imaging of domains in TbFe by force microscopy , 1988 .

[3]  Simone Pisana,et al.  Tunable nanoscale graphene magnetometers. , 2010, Nano letters.

[4]  Mohamed Henini,et al.  Real‐time scanning Hall probe microscopy , 1996 .

[5]  A. Oral,et al.  50 nm Hall Sensors for Room Temperature Scanning Hall Probe Microscopy , 2004 .

[6]  K. Klitzing,et al.  Observation of electron–hole puddles in graphene using a scanning single-electron transistor , 2007, 0705.2180.

[7]  B L Altshuler,et al.  Weak-localization magnetoresistance and valley symmetry in graphene. , 2006, Physical review letters.

[8]  J. Bao,et al.  Electronic transport in chemical vapor deposited graphene synthesized on Cu: Quantum Hall effect and weak localization (vol 96, 122106, 2010) , 2009, 0910.4329.

[9]  H. M. Jang,et al.  High-mobility graphene nanoribbons prepared using polystyrene dip-pen nanolithography. , 2011, Journal of the American Chemical Society.

[10]  Hans D. Hallen,et al.  Scanning Hall probe microscopy , 1992 .

[11]  William J. Gallagher,et al.  High‐resolution scanning SQUID microscope , 1995 .

[12]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[13]  P.-A. Besse,et al.  Micro-Hall devices: performance, technologies and applications , 2003 .

[14]  J. Kirschner,et al.  Spin-polarized scanning tunneling microscopy on ferromagnets , 1999 .

[15]  Jong-Hyun Ahn,et al.  Wafer-scale synthesis and transfer of graphene films. , 2009, Nano letters.

[16]  H. Shtrikman,et al.  Noise characteristics of 100 nm scale GaAs/Al x Ga 1x As scanning Hall probes , 2007 .

[17]  K. Novoselov,et al.  Control of Graphene's Properties by Reversible Hydrogenation: Evidence for Graphane , 2008, Science.

[18]  Jiwoong Park,et al.  Transfer-free batch fabrication of single layer graphene transistors. , 2009, Nano letters.