A. P. Ramirez

activity

20012005

most citedMagnetically driven ferroelectric order in Ni

_{3}

_{2}

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644 citations · 698 across the 7 of their papers we have counts for

collaborators

Showing cond-mat.str-elShow all

5 papers · 1 filter

cond-mat.str-el2005★ 29 cited

Strongly Enhanced Hole-Phonon Coupling in the Metallic State of the Dilute Two-Dimensional Hole Gas

X. P. A. Gao, G. S. Boebinger, A. P. Mills +3

We have studied the temperature dependent phonon emission rate $P$ ( $T$ ) of a strongly interacting ( $r_{s} \geq$ 22) dilute 2D GaAs hole system using a standard carrier heating techniqu…

cond-mat.str-el2004★ 23 cited

Temperature and Magnetic Field Enhanced Hall Slope of a Dilute 2D Hole System in the Ballistic Regime

Xuan P. A. Gao, G. S. Boebinger, A. P. Mills +3

We report the temperature( $T$ ) and perpendicular magnetic field( $B$ ) dependence of the Hall resistivity $ρ_{x y} (B)$ of dilute metallic two-dimensional(2D) holes in GaAs over a broa…

cond-mat.str-el2003

Fermi liquid behavior of metallic 2D holes at high temperatures

Xuan P. A. Gao, A. P. Mills, A. P. Ramirez +2

The resistivity $ρ$ of high mobility dilute 2D holes in GaAs exhibits a peak at a certain temperature $T^{*}$ in zero magnetic field( $B$ =0). In the $T > T^{*}$ regime where d $ρ$ /d $T <$ 0,…

cond-mat.str-el2001

Antiferromagnetism in CaCu $_{3}$ Ti $_{4}$ O $_{12}$ studied by magnetic Raman spectroscopy

A. Koitzsch, G. Blumberg, A. Gozar +4

For CaCu $_{3}$ Ti $_{4}$ O $_{12}$ -- an insulator that exhibits a giant dielectric response above 100 K -- Cu $^{2 +}$ antiferromagnetic spin ordering has been investigated by magnetic…

cond-mat.str-el2001

Suppression of weak localization effects in low-density metallic 2D holes

A. P. Mills, A. P. Ramirez, X. P. A. Gao +3

We have measured the conductivity in a gated high-mobility GaAs two dimensional hole sample with densities in the range (7-17)x10^9 cm^-2 and at hole temperatures down to 5x10^-3 E…