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  Partner: UNT College of Arts and Sciences
 Department: Physics
 Resource Type: Paper
 Collection: UNT Scholarly Works
Unexpected Structures for Intercalation of Sodium in Epitaxial Graphene-SiC Interfaces

Unexpected Structures for Intercalation of Sodium in Epitaxial Graphene-SiC Interfaces

Date: February 2012
Creator: Sandin, Andreas; Jayasekera, Thushari; Rowe, J. E.; Kim, Ki Wook; Buongiorno Nardelli, Marco & Dougherty, Daniel B.
Description: In this paper, the authors show using scanning tunneling microscopy, spectroscopy, and ab initio calculations that several intercalation structures exist for Na in epitaxial graphene on SiC(0001). Intercalation takes place at room temperature and Na electron-dopes the graphene. It intercalates in-between single-layer graphene and the carbon-rich interfacial layer. It also penetrates beneath the interfacial layer and decouples it to form a second graphene layer. This decoupling is accelerated by annealing and is verified by direct Na deposition onto the interface layer. The authors' observations show that intercalation in graphene is fundamentally different than in graphite and is a versatile means of electronic control.
Contributing Partner: UNT College of Arts and Sciences
Probability flux as a method for detecting scaling

Probability flux as a method for detecting scaling

Date: April 5, 2010
Creator: Ignaccolo, Massimiliano; Grigolini, Paolo & West, Bruce J.
Description: Paper on probability flux as a method for detecting scaling.
Contributing Partner: UNT College of Arts and Sciences
Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect

Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect

Date: December 2006
Creator: Allegrini, Paolo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
Description: Paper discussing the complexity matching effect.
Contributing Partner: UNT College of Arts and Sciences
Short- and Long-Term Statistical Properties of Heartbeat Time-Series in Healthy and Pathological Subjects

Short- and Long-Term Statistical Properties of Heartbeat Time-Series in Healthy and Pathological Subjects

Date: October 2002
Creator: Allegrini, Paolo; Balocchi, Rita; Chillemi, Santi; Grigolini, Paolo; Palatella, Luigi & Raffaelli, G.
Description: Paper discussing short- and long-term statistical properties of heartbeat time-series in healthy and pathological subjects.
Contributing Partner: UNT College of Arts and Sciences
Cognitive Scale-Free Networks as a Model for Intermittency in Human Natural Language

Cognitive Scale-Free Networks as a Model for Intermittency in Human Natural Language

Date: 2003
Creator: Allegrini, Paolo; Grigolini, Paolo & Palatella, Luigi
Description: Paper discussing cognitive scale-free networks as a model for intermittency in human natural language.
Contributing Partner: UNT College of Arts and Sciences
From Knowledge, Knowability and the Search for Objective Randomness to a New Vision of Complexity

From Knowledge, Knowability and the Search for Objective Randomness to a New Vision of Complexity

Date: February 2, 2008
Creator: Allegrini, Paolo; Giuntoli, Martina; Grigolini, Paolo & West, Bruce J.
Description: Paper discussing knowledge, knowability, and the search for objective randomness to a new vision of complexity.
Contributing Partner: UNT College of Arts and Sciences
Scaling in Non-Stationary time series I

Scaling in Non-Stationary time series I

Date: February 2, 2008
Creator: Ignaccolo, Massimiliano; Allegrini, Paolo; Grigolini, Paolo; Hamilton, P. & West, Bruce J.
Description: Paper discussing scaling in non-stationary time series.
Contributing Partner: UNT College of Arts and Sciences
Conflict between trajectories and density description: the statistical source of disagreement

Conflict between trajectories and density description: the statistical source of disagreement

Date: December 2002
Creator: Allegrini, Paolo; Grigolini, Paolo; Palatella, Luigi & Rosa, Angelo
Description: Paper discussing the statistical source of disagreement between trajectories and density description.
Contributing Partner: UNT College of Arts and Sciences
In the search for the low-complexity sequences in prokaryotic and eukaryotic genomes: how to derive a coherent picture from global and local entropy measures

In the search for the low-complexity sequences in prokaryotic and eukaryotic genomes: how to derive a coherent picture from global and local entropy measures

Date: 2003
Creator: Acquisti, Claudia; Allegrini, Paolo; Bogani, Patrizia; Buiatti, Marcello, 1937-; Catanese, Elena; Fronzoni, Leone et al.
Description: Paper discussing the search for the low-complexity sequences in prokaryotic and eukaryotic genomes and how to derive a coherent picture from global and local entropy measures.
Contributing Partner: UNT College of Arts and Sciences
Reply to the Comment  "Intercluster correlation in Seismicity" by Helmstetter and Sornette

Reply to the Comment "Intercluster correlation in Seismicity" by Helmstetter and Sornette

Date: September 15, 2003
Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Description: This paper is a reply to the comment by Helmstetter and Sornette titled "Intercluster correlation in Seismicity" which addresses an important point in a paper written by the authors that needs to be clarified.
Contributing Partner: UNT College of Arts and Sciences
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