Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates

Details Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates

1997-06-16

arxiv.org/abs/cond-mat/9706147v2

Physics

Condensed Matter

Strongly Correlated Electrons

RevTex, 36 pages with 16 figures

Scientific paper

10.1103/PhysRevB.56.14655

The three-leg ladder has one odd-parity and two even-parity channels. At low doping these behave quite differently. Numerical calculations for a t-J model show that the initial phase upon hole doping has two components - a conducting Luttinger liquid in the odd-parity channel, coexisting with an insulating (i.e. undoped) spin liquid phase in the even-parity channels. This phase has a partially truncated Fermi surface and violates the Luttinger theorem. This coexistence of conducting fermionic and insulating paired bosonic degrees of freedom is similar to the recent proposal of Geshkenbein, Ioffe, and Larkin for the underdoped spin-gap normal phase of the cuprates. A mean field approximation is derived which has many similarities to the numerical results. One difference however is an induced hole pairing in the odd-parity channel at arbitrary small dopings, similar to that proposed by Geshkenbein, Ioffe, and Larkin for the two-dimensional case. At higher dopings, we propose that a quantum phase transition will occur as holes enter the even-parity channels, resulting in a Luther-Emery liquid with hole pairing with essentially d-wave character. In the mean field approximation a crossover occurs which we interpret as a reflection of this quantum phase transition deduced from the numerical results.

Affiliated with

Also associated with

No associations

Rating

Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lightly Doped t-J Three-Leg Ladders - an Analog for the Underdoped Cuprates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-656386