A. R. Subramaniam

Boundary multifractality at the integer quantum Hall plateau transition: implications for the critical theory (2008)

Obuse, H., Subramaniam, A. R., Furusaki, A., Gruzberg, I. A., Ludwig, A. W. W.

We study multifractal spectra of critical wave functions at the integer quantum Hall plateau transition using the Chalker-Coddington network model. Our numerical results provide important new...

Entanglement entropy and multifractality at localization transitions (2007)

Jia, X., Subramaniam, A. R., Gruzberg, I. A., Chakravarty, S.

The von Neumann entanglement entropy is a useful measure to characterize a quantum phase transition. We investigate the non-analyticity of this entropy at disorder-dominated quantum phase transitions...

Boundary multifractality in critical one-dimensional systems with long-range hopping. (2007)

Mildenberger, A., Subramaniam, A.R., Narayanan, R., Evers, F., Gruzberg, I.A., Mirlin, A.D.

Physical Review B, 75(2007) S.094204/1-7

Boundary multifractality in critical 1D systems with long-range hopping (2006)

Mildenberger, A., Subramaniam, A. R., Narayanan, R., Evers, F., Gruzberg, I. A., Mirlin, A. D.

Boundary multifractality of electronic wave functions is studied analytically and numerically for the power-law random banded matrix (PRBM) model, describing a critical one-dimensional system with...

Multifractality and Conformal Invariance at 2D Metal-Insulator Transition in the Spin-Orbit Symmetry Class (2006)

Obuse, H., Subramaniam, A. R., Furusaki, A., Gruzberg, I. A., Ludwig, A. W. W.

We study the multifractality (MF) of critical wave functions at boundaries and corners at the metal-insulator transition (MIT) for noninteracting electrons in the two-dimensional (2D) spin-orbit...

Surface Criticality and Multifractality at Localization Transitions. (2006)

Subramaniam, A.R., Gruzberg, I.A., Ludwig, A.W.W., Evers, F., Mildenberger, A., Mirlin, A.D.

Physical Review Letters, 96(2006) S.126802

Surface criticality and multifractality at localization transitions (2005)

Subramaniam, A. R., Gruzberg, I. A., Ludwig, A. W. W., Evers, F., Mildenberger, A., Mirlin, A. D.

We develop the concept of surface multifractality for localization-delocalization (LD) transitions in disordered electronic systems. We point out that the critical behavior of various observables...